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Solutions Search - Extended Temperature (H & MP) Amplifiers

Reference Filter Increases 32-Bit ADC SNR by 6dB

Guy Hoover - Applications Engineer Sep 26th 2017
Design Note DN568: Introduction Attaining optimal SNR performance from an ADC isn’t just a matter of providing a low noise signal to the ADC’s input. Providing a low noise reference voltage is just as important. While reference noise has no effect at zero-scale, at full-scale any noise on the reference will be visible ...

Blog Post 

 

Precision Ultralow Power High Side Current Sense

Catherine Chang - Applications Engineer Sep 19th 2017
Design Note 1045: Introduction Precision high side measurement of microamp currents requires a small value sense resistor and a low offset voltage, ultralow-power amplifier. The LTC®2063 zero-drift amplifier has a maximum input offset voltage of just 5µV and draws just 1.4µA making it a great choice for building ...

Blog Post 

 

Converting a Low Distortion Single-Ended Sine Source to Fully Differential

Guy Hoover - Applications Engineer Sep 10th 2017
Customers looking for a way to evaluate ADCs with differential inputs will find themselves in need of a low distortion, low noise differential sine source. Single-ended sine sources can be obtained by building a simple Wien-bridge oscillator or by employing any of several readily available audio oscillators. Differential sine ...

Blog Post 

 

LTC6258 Low Noise Reference Use LT6656 for a Low Current Starting Reference

Aug 30th 2017
The LT6656 is a 1µA precision series voltage reference. Yet with low power comes low drive current capability and higher noise. The LTC6259 can be used as a buffer that follows a filter to enhance the utilization of the LT6656 in low power applications. Figure 5a shows such a configuration. First a very low cutoff frequency ...

Circuit LTspice 

 

LTC6258 Low Power Squarewave - Sinewave Oscillator

Aug 30th 2017
A low power sine wave generator can be derived by driving a square wave into the bandpass filter. A complete schematic is shown in Figure 4a. The LTC6992-1 easily configures as a 50% duty cycle 10kHz square wave, and can drive the relatively benign loading seen in the bandpass filter. Figures 4b and 4c show the LTC6992-1 output ...

Circuit LTspice 

 

LTC6258 LED Driver with Self-Oscillation

Aug 30th 2017
The circuit above combines edge detection with use of the shutdown pin of the LTC6259. R2 and R3 bring in a divided down copy of the supply voltage as a reference into the positive terminal. The op amp forces this voltage on the sense resistor RSENSE in “LED ON” operation. In that sense this circuit is similar to ...

Circuit LTspice 

 

LTC6258 Lower Power LED Driver with Voltage Command

Aug 30th 2017
Figure above shows a voltage controlled LED drive circuit. When VIN is at 0V, the op amp supply current is nominally 20μA. The offset, for example, could be 450µV, appears across R1, inducing a 0.45mA current in the LED. Some applications want a guaranteed zero LED current at VIN = 0, and this is the purpose of R5. ...

Circuit LTspice 

 

DC2369A - DC2369A Low Power Wireless Current Sense

Aug 30th 2017
The DC2369A demo circuit is a reference design that implements a wireless current sense solution using Analog Device's low power integrated circuits. The only external connection needed is the current to be measured, allowing this circuit to be inserted at any voltage level or isolation level. The design combines components ...

Demo Board 

 

LTC2063 Micropower Precision Oxygen Sensor

Jul 27th 2017
This low power precision gas sensor circuit operates in an oxygen level range of 0% to 30%, with a nominal output of 1V in normal atmospheric oxygen concentrations (20.9%) when the gas sensor has been fully initialized. Total active power consumption is less than 2.1μA on a single rail supply. Since ...

Circuit LTspice 

 

LTC2063 RTD Sensor with ±1°C Precision

Jul 27th 2017
This low power platinum resistance temperature detector (RTD) sensor circuit draws only 35μA total supply current on a minimum 2.6V rail, and is accurate to within ±1°C at room temperature, including all error intrinsic to the Vishay PTS Class F0.3 Variant RTD. It covers the temperature ...

Circuit LTspice 

 

Micropower Zero-Drift Amplifier Improves Circuit Performance

Andrew Roberts - Design Engineer Jul 10th 2017
This video explores the superior performance achieved with the LTC2063 zero-drift amplifier in a wide variety of low power applications. The LTC2063 enables precision measurement at extremely low power levels. The LTC2063 operates from 1.7V to 5.25V and features a shutdown mode which is optimized for battery-powered and duty-cycled ...

Video 

 

Industry’s Lowest Power Zero-Drift Op Amp Consumes only 1.3μA

Jul 10th 2017
MILPITAS, CA and NORWOOD, MA – July 10, 2017 – Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTC2063 zero-drift op amp which draws just 1.3μA typ (2μA max) on a 1.8V supply. This micropower amplifier maintains uncompromised precision: maximum input offset voltage ...

Press Release 

 

DC961B - LT1994 Low Noise, Low Distortion, Fully Differential Amplifier/Driver

Jun 28th 2017
Demonstration circuit 961 features an LT®1994, low noise, low distortion, fully differential amplifier. The LT1994 is a high precision, very low noise, low distortion, fully differential input/output amplifier (see Table 1). The LT1994’s output common mode voltage is independent of the input common mode voltage, and ...

Demo Board 

 

DC2623A - LTC6404-1 + AD8002 ADC Driver Board | Low Distortion ADC Driver for LTC2387 family, Input Frequencies >1MHz

Jun 16th 2017
Demonstration circuit 2623A features the LTC6404-1 amplifier. The DC2623A includes two of these amplifiers and is designed to drive the inputs of the DC2290 demo board. The DC2290 features the LTC2387 18-bit, 15Msps high speed SAR ADC. The linearity and low noise of the LTC6404-1 make it an ideal candidate to drive the LTC2387 ...

Demo Board 

 

LT1997-3 - Single Supply Current Sense

Jun 14th 2017
Sense resistors R1 converts a current into a voltage. This voltage is buffered (gain of 1) from the input to the output in this amplifier. V1 tests the circuit for response to common mode variation. A simulation will show that the output voltage variation due to the common mode voltage V1 is very small.     The ...

Circuit LTspice 

 

LT1997-3 - Conversion of Single Ended Pulse To Differential Output

Jun 14th 2017
This circuit combines the LT®1997-3 with a high speed amplifier to convert a single-ended signal to differential with a common-mode offset. Extra compensation capacitors C1 and C2 help to shape the final response. Taking higher gain from the LT1997-3 will eliminate the need for these capacitors.     The LT1997-3 ...

Circuit LTspice 

 

LTspice: Worst-Case Circuit Analysis with Minimal Simulations Runs

Joseph Spencer - Field Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Jun 8th 2017
When designing a circuit in LTspice, you may wish to assess the impact of component tolerances. For example, the gain error introduced by non-ideal resistors in an op amp circuit. This article illustrates a method that reduces the number of simulations needed, and as a result speeds your time to results. Varying a Parameter LTSpice ...

Blog Post LTspice 

 

Lower Power Op Amp: Low Noise Reference, Utility Sine Wave

Catherine Chang - Applications Engineer
Philip Karantzalis - Senior Apps Eng
Aaron Schultz - Applications Manager Signal Conditioning
May 22nd 2017
Design Note DN1042: Introduction Our op amp family has expanded with industryleading speed versus supply current. The LTC®6258/ LTC6259/LTC6260 family (single, dual, quad) provides 1.3MHz at a super low 20μA supply current, with 400μV maximum offset voltage and rail-to-rail input and output. In combination with a ...

Blog Post 

 

Lower Power Op Amp: Utility Sine Wave

Aaron Schultz - Applications Manager Signal Conditioning
Philip Karantzalis - Senior Apps Eng
Catherine Chang - Applications Engineer
May 22nd 2017
Design Note DN564: Introduction Our op amp family has expanded with industryleading speed versus supply current. The LTC®6258/ LTC6259/LTC6260 family (single, dual, quad) provides 1.3MHz at a super low 20μA supply current, with 400μV maximum offset voltage and rail-to-rail input and output. In combination with a 1.8V ...

Blog Post 

 

LTC6261 Audio Headphones Bridge Driver

May 22nd 2017
The LTC®6261/LTC6262/LTC6263 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, and rail-to-rail inputs and outputs. They are unity gain stable with capacitive loads up to 1nF. They feature 30MHz gain-bandwidth product, 7V/μs slew rate while consuming only 240μA of supply current ...

Circuit LTspice 

 

Low Power Op Amp: Low Power Filter, Headphone Driver Revisited

Aaron Schultz - Applications Manager Signal Conditioning May 18th 2017
Design Note DN563: Introduction A new family of op amps features industry leading speed versus supply current. The LTC6261/LTC6262/ LTC6263 family (single, dual, quad) provides 30MHz at a low 240μA supply current, with 400μV maximum offset voltage and rail-to-rail input and output. In combination with 1.8V to 5.25V supply, ...

Blog Post 

 

DC2246B - LT3042EDD Demo Board | Ultralow Noise, Ultrahigh PSRR RF LDO, 3.8V ≤ VIN ≤ 20V, VOUT = 3.3V @ 200mA

Mar 28th 2017
DC2246B is a linear regulator demonstration circuit featuring the LT®3042EDD, which is a 200mA, ultralow noise, and ultrahigh power supply rejection ratio (PSRR) RF low dropout (LDO) regulator with programmable current limit. DC2246B operates over an input voltage range of 3.8V to 20V and is configured for 3.3V at its output. ...

Demo Board 

 

Improving Linearity by Using Absorptive Filters

Clarence Mayott - Applications Engineer Mar 10th 2017
Introduction: When driving a direct sampling high speed ADC, the most likely place to degrade the performance is the interface between the final amplifier and the ADC. With any direct sampling ADC there will be nonlinear charge produced in the sampling process. This charge is reflected into the input network each time the sampling ...

Blog Post 

 

Rail-to-Rail Op Amps Feature Precision & Power Efficiency

Feb 28th 2017
MILPITAS, CA – February 28, 2017 – Linear Technology introduces the LTC6258/59/60 and LTC6261/62/63, single/dual/quad op amps, extending its line of power efficient, low noise, precision operational amplifiers. These devices are part of a family of power efficient op amps ranging from 1.3MHz GBW product at 20µA ...

Press Release 

 

LTC6261 Second Order Bessel Filter

Jan 17th 2017
The LTC®6261/LTC6262/LTC6263 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, and rail-to-rail inputs and outputs. They are unity gain stable with capacitive loads up to 1nF. They feature 30MHz gain-bandwidth product, 7V/μs slew rate while consuming only 240μA of supply current ...

Circuit LTspice 

 

LTC6261 Third Order Butterworth Filter

Jan 17th 2017
The LTC®6261/LTC6262/LTC6263 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, and rail-to-rail inputs and outputs. They are unity gain stable with capacitive loads up to 1nF. They feature 30MHz gain-bandwidth product, 7V/μs slew rate while consuming only 240μA of supply current ...

Circuit LTspice 

 

High Linearity, Low Noise LTC2387-18 Drivers for Sinusoidal Signals

Doug Stuetzle - Senior Analog Applications Engineer Jan 10th 2017
Introduction The LTC2387-18 is a high speed SAR (Successive Approximation Register) ADC suited for high linearity, low noise applications. This ADC is capable of sampling at up to 15Msps, which allows it to convert signals at frequencies of several MHz. It is well-suited to convert both pulsed and continuous signals in this ...

Blog Post 

 

DC2487A - LTC6363 Rail-to-Rail SAR ADC Driver Amplifier

Jan 10th 2017
Demonstration circuit 2487A features the LTC®6363 amplifier. The DC2487A is designed to drive the inputs of the DC2290A demo board. The DC2290A features the LTC®2387 18-bit, 15Msps high speed SAR ADC. The linearity and low noise of the LTC6363 make it an ideal candidate to drive the LTC2387 at frequencies up to 100kHz. ...

Demo Board 

 

DC2414A - Un-Populated Demonstration Circuit; Supports 3 Channels of LTC6268 & LTC6268-10/LTC6226X

Jan 3rd 2017
Demonstration Circuit 2414A has layouts for three channels of SOT-23 transimpedance amplifiers. Each of the three layouts applies different techniques achieving various parasitic feedback capacitances (CF). The upper channel, U3, assumes a low Transimpedance gain, has a parasitic CF of 0.1pF, and provides a footprint for an ...

Demo Board 

 

Hybrid Wide Dimming Ratio Linear LED Current Controller Using LT8614 & LT3083/LT6015

Tom Mosteller - Field Applications Engineer Oct 17th 2016
Many applications for LED illumination require wide dimming ratios. This can be accomplished simply via an adjustable current source as show below.  The current source can be varied by a number of different means, and a large LED current range can be achieved. The primary problem with this technique is that the power dissipation ...

Blog Post Circuit LTspice 

 

Op Amp Precision Positive & Negative Clipper using LT6015/LT6016/LT6017

Tom Mosteller - Field Applications Engineer
Aaron Schultz - Applications Manager Signal Conditioning
Oct 3rd 2016
It can be a challenge to match the voltage range of an analog signal to the input range of an analog to digital converter (ADC). Exceeding the ADC’s input range will give an incorrect reading, and if the input goes far enough beyond the power supply rails substrate currents can flow into the ADC which can cause latch up ...

Blog Post Circuit LTspice 

 

LTC2387 Drivers Part III: Trans-Impedance Amplifier/Driver

Derek Redmayne - Staff Scientist Sep 8th 2016
This is unabashedly a classic case of what marketing calls “a solution looking for a problem”. It is an example of how the full SNR of the LTC2387 may be realized for a real world signal. Most signals originating in low level circuitry, in sensors, or in the real world, will require significant gain to develop 8Vp-p ...

Blog Post 

 

Anti-Alias Filter for 24-bit ADC

Guy Hoover - Applications Engineer Aug 3rd 2016
For many ADC applications a simple RC filter at the buffer input will provide adequate anti-alias filtering. For applications that require a higher order filter an active filter is often used. The active component in that filter must have sufficient bandwidth, fast settling, low noise and low offset so that it doesn’t ...

Blog Post 

 

LTC6244 High Speed Peak Detector

Hassan Kelley - Field Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Aug 1st 2016
Introduction Peak detectors capture the extrema of the voltage signal at its input. A positive peak detector captures the most positive point of the input signal and a negative peak detector captures the most negative point of the input signal. Ideally the output of the peak detector circuit tracks or follows the input voltage ...

Blog Post Circuit LTspice 

 

Baseband Design Example for LTC5589/LTC5599 Low-Power IQ Modulator

Bruce Hemp - Applications Section Leader Jul 1st 2016
Introduction This basic low power modulator was described in the LT Journal Nov 2015 article. In this blog post, we will show how to: Use simulation to validate the filter design, and Reduce DC offsets by utilizing Differential Amplifiers for the baseband drive. Also shown are some miscellaneous tips to help complete ...

Blog Post Circuit LTspice 

 

How to Drive the LTC2387 (Part 1): Signal Applications to 5MHz that Require Low Inter-Modulation Distortion

Derek Redmayne - Staff Scientist May 13th 2016
The biggest challenge in driving a 15Msps, 18-bit ADC with an 8Vp-p input range is the lack of integrated amplifiers with adequate bandwidth, low noise, and the required output excursion. There are low-noise, high-BW amplifiers than can produce 2VPP. There are low speed amplifiers than can produce 8VPP. For low distortion beyond ...

Blog Post 

 

DC2402A - LT6237 ADC Driver Board | Driver for LTC2387 family, Input Frequencies up to 8kHz

Apr 14th 2016
Demonstration circuit 2402A features the LT®6237 amplifier. The DC2402A includes two of these amplifiers and is designed to drive the inputs of the DC2290A demo board. The DC2290A features the LTC2387 18-bit, 15Msps High Speed SAR ADC. ...

Demo Board 

 

A New Era in Space Products - Radiation Tolerant

T.J. Fure - Product Marketing Manager
Gabino Alonso - Strategic Marketing Engineer
Mar 23rd 2016
Recent developments have made doing business in space ever more achievable to a broadening base of companies. A market previously consisting solely of major defense contractors and national governments has been disrupted by a growing list of commercial companies determined to deploy an enterprise beyond the confines of our terrestrial ...

Blog Post 

 

High-Voltage Amplifier Extends Coulomb Counter Range to +/-270V

Kris Lokere - Strategic Applications Manager Jan 22nd 2016
Introduction A coulomb counter can measure charge that flows into or out of a battery. Small, dedicated devices such as LTC2941 or LTC2943 can directly interface with low to medium battery voltages, up to about 20V. You can extend the input operating range of the measurement circuit by using a high-voltage amplifier as a level ...

Blog Post 

 

±270V Common Mode Difference Amplifier Features 97dB Min CMRR, ±35ppm Max Gain Error

Jan 11th 2016
MILPITAS, CA - January 11, 2016 - Linear Technology introduces the LT6375, a unity-gain difference amplifier with integrated precision matched resistors, which precisely level shifts and buffers small difference signals while rejecting up to ±270V common mode. The A-grade version achieves unprecedented performance: CMRR is ...

Press Release 

 

LT8714 300kHz, Bidirectional 1A Current Source

Dec 17th 2015
The LT®8714 is a synchronous PWM DC/DC controller designed for a four quadrant output converter. The output voltage cleanly transitions through zero volts with sourcing and sinking output current capability. ...

Circuit 

 

LTC6268-10 Oscilloscope Differential Probe

Dec 1st 2015
The LTC6268-10 is a single 4GHz FETinput operational amplifier with extremely low input bias current and low input capacitance. It also features low input-referred current noise and voltage noise making it an ideal choice for high speed transimpedance amplifiers, and high-impedance sensor amplifiers. It is a decompensated op ...

Circuit LTspice 

 

DC2319A-A - LTC6363 Differential Op Amp/ADC Driver Demo Board

Nov 10th 2015
The LTC®6363 is a low power, low noise differential op amp with rail-to-rail output swing and good DC accuracy. The amplifier may be configured to process a fully differential input signal or to convert a single-ended input signal to a differential output signal. The differential outputs of the DC2319A can be configured ...

Demo Board 

 

DC2443A - LT6375 High VCM Diff Amp Demo Board

Nov 2nd 2015
Demonstration Circuit 2443 is a Configurable High Voltage Amplifier featuring the LT®6375. This demo board translates a high common mode signal to an output related to a low voltage reference level. The demo circuit is equipped with jumpers to facilitate setting the pin-strapped internal divider ratio configuration. The ...

Demo Board 

 

Wide Common Mode Range Current Sensing

John Fiorenza - Design Engineer Oct 21st 2015
The LT6375 difference amplifier enables very accurate wide common mode current sensing applications. Its superior performance compared to alternative industry standard difference amplifiers translates into better accuracy in demanding current sensing measurement applications. The LT6375 is a flexible general purpose difference ...

Video 

 

Low Power, Precision Op Amp Simplifies Driving of MUXed ADCs

Guy Hoover - Applications Engineer Oct 2nd 2015
Design Note 1034: Introduction The high speed op amps required to buffer a modern 16‑/18-bit analog-to-digital converter (ADC) typically dissipate as much power as the ADC itself, often with a maximum offset spec of about 1mV, well beyond that of the ADC. If multiple multichannel ADCs are required, the power dissipation can ...

Blog Post 

 

Precision Differential Amplifier Drives 20-Bit ADCs Consuming Less than 2mA

Sep 24th 2015
MILPITAS, CA - September 24, 2015 - Linear Technology introduces the LTC6363, a low power, high precision, fully differential amplifier optimized for driving high performance 16-, 18- and 20-bit SAR and ΔΣ ADCs. Featuring 100µV maximum input offset voltage and 2.9nV/√Hz input-referred voltage noise, the LTC6363 consumes ...

Press Release 

 

Signal Conditioning for High Impedance Sensors

Glen Brisebois - Applications Engineer - Signal Conditioning Sep 22nd 2015
Abstract Dealing with high impedance sources and maintaining high impedance inputs without compromising reliability has its own set of challenges. This article offers qualitative and quantitative discussions of issues associated what high impedence circuits, what types of sensors are high impedance, and what devices are available ...

Blog Post 

 

Injection-Lock a Wien-Bridge Oscillator

Glen Brisebois - Applications Engineer - Signal Conditioning Sep 22nd 2015
I recently had the opportunity to investigate a new micropower 6-MHz LTC6255 op amp driving a 12-bit, 250k sample/sec LTC2361 ADC. I wanted to acquire the FFT of a pure sinusoid of about 5 kHz. The problem is that getting the FFT of a pure sinusoid requires, well, a pure sinusoid. Most programmable signal generators, however, ...

Blog Post 

 

Driving High Resolution SAR ADCs

Tyler Hutchison - Signal Conditioning Design Engineer Sep 8th 2015
Driving high resolution SAR ADCs often requires tradeoffs between power consumption, linearity, and noise.  The LTC6363 provides 20 bit accuracy when the system designer pays close attention to the interface filter between the driver and the ADC.  Calculations and empirical data provide additional insight as to how ...

Video 

 

Positive to Negative Converter with Variable Output Using LTC3630 and LT6015/LT6016

Philip Lane - Field Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Sep 1st 2015
There was a window of time in the 1950s and early ’60s when negative voltage rails were commonplace, when germanium PNP transistors were prevalent—like those used in an old “transistor radio”, now worth a fortune on Ebay. Nowadays, NPN transistors are more prevalent, since they basically work ...

Blog Post Circuit LTspice 

 

LT6375 27dB Audio Gain Stage

Aug 31st 2015
The LT®6375 is a unity-gain difference amplifier which combines excellent DC precision, a very high input common mode range and a wide supply voltage range. It includes a precision op amp and a highly-matched thin film resistor network. It features excellent CMRR, extremely low gain error and extremely low gain drift. ...

Circuit 

 

LT6375 ±5mA Howland Current Source

Aug 31st 2015
The LT®6375 is a unity-gain difference amplifier which combines excellent DC precision, a very high input common mode range and a wide supply voltage range. It includes a precision op amp and a highly-matched thin film resistor network. It features excellent CMRR, extremely low gain error and extremely low gain drift. ...

Circuit 

 

LT6375 Bidirectional Full Range Current Monitor

Aug 31st 2015
The LT®6375 is a unity-gain difference amplifier which combines excellent DC precision, a very high input common mode range and a wide supply voltage range. It includes a precision op amp and a highly-matched thin film resistor network. It features excellent CMRR, extremely low gain error and extremely low gain drift. ...

Circuit 

 

LTC6363 LTC6363 Used as Lowpass Filter/Driver with 10VP-P Singled-Ended Input, Driving a SAR ADC

Aug 31st 2015
The LTC®6363 is a low power, low noise, fully differential op amp with rail-to-rail outputs optimized to drive low power SAR ADCs. The LTC6363 draws only 1.9mA supply current in active operation and features a shutdown mode which reduces the current consumption to 20μA (VS = 3V). ...

Circuit 

 

LTC6363 Differential AV = 1/9 Configuration Using an LT®5400 Quad-Matched Resistor Network

Aug 31st 2015
The LTC®6363 is a low power, low noise, fully differential op amp with rail-to-rail outputs optimized to drive low power SAR ADCs. The LTC6363 draws only 1.9mA supply current in active operation and features a shutdown mode which reduces the current consumption to 20μA (VS = 3V). ...

Circuit 

 

LTC6363 Single-Ended-to-Differential Conversion of a 20VP-P Ground-Referenced Input with Gain of AV = 0.5 to Drive an ADC

Aug 31st 2015
The LTC®6363 is a low power, low noise, fully differential op amp with rail-to-rail outputs optimized to drive low power SAR ADCs. The LTC6363 draws only 1.9mA supply current in active operation and features a shutdown mode which reduces the current consumption to 20μA (VS = 3V). ...

Circuit 

 

Paralleling Amplifiers Improves Signal-to-Noise Performance

Kevin B. Scott - Senior Strategic Marketing Engineer Jul 9th 2015
Dealing with low amplitude signals can be challenging.  In order to differentiate between the low level signal and the noise contributed by surrounding circuitry, we typically use gain to amplify the signal above the noise floor.  However, a standard amplifier configuration multiplies the input signal, the input noise, ...

Blog Post 

 

Micropower Op Amp Drives 8-Channel 18-Bit Simultaneous Sampling ADC without Compromising Accuracy or Breaking the Power Budget

Guy Hoover - Applications Engineer Jun 23rd 2015
Design Note 541: Introduction The op amps used to drive 18-bit analog-to-digital converters (ADCs) typically draw as much supply current as the ADC itself, often with a maximum offset spec that is well above that of the ADC. If multiple ADC channels are required, the power dissipation from these drivers quickly rises to unacceptable ...

Blog Post 

 

LT6023 Gain of 11 Instrumentation Amplifier

Jun 17th 2015
The LT®6023 is a low power, enhanced slew rate, precision operational amplifier. The proprietary circuit topology of this amplifier gives excellent slew rate at low quiescent power dissipation without compromising precision or settling time. In addition, proprietary input stage circuitry allows the input impedance to remain ...

Circuit 

 

DC2266A - LTC2107 + LTC6409 Demo Board | 16-Bit, 210Msps ADC and Driver Combo Board, DC-100MHz Input, DDR LVDS Outputs, (req DC1371 and DC2219)

May 20th 2015
Demonstration circuit 2266A features the LTC®2107, 210Msps ADC, and the LTC6409 low noise amplifier. DC2266A supports the LTC2107 DDR LVDS output mode. The circuitry on the analog inputs is optimized for analog input frequencies from DC to 100MHz. When driven with a 50Ω source, the gain will be 6dB. To modify the ...

Demo Board LinearLabTools PScope 

 

4GHz Amplifier Achieves <1pA Input Bias Current over -40°C to 85°C Temperature Range

May 13th 2015
MILPITAS, CA - May 13, 2015 - Linear Technology announces the LTC6268-10 single and dual LTC6269-10 4GHz FET-input op amps for high dynamic range and high speed transimpedance amplifier (TIA) applications. These new decompensated amplifiers extend the speed and dynamic range capabilities of this ultralow bias current op amp ...

Press Release 

 

Sometimes You Need a Little Gain Part 2

Guy Hoover - Applications Engineer Apr 28th 2015
Introduction Part 1 of "Sometimes You Need a Little Gain" dealt with a pseudo-differential ADC driver with gains of one to ten. This time a fully differential ADC driver, again with gains of one to ten will be described. First a brief recap on the LTC2373-18 SAR ADC and a description of the LTC6237 op amp which will be ...

Blog Post 

 

Sometimes You Need a Little Gain - Part 1

Guy Hoover - Applications Engineer Apr 9th 2015
Introduction The LTC2373-18 is an 18-bit, 1Msps, 8-channel SAR ADC with an integrated high performance reference and programmable sequencer. The LTC2373-18 can be configured to accept both pseudo-differential (unipolar and bipolar) and fully differential input signals. For best performance, an op amp should ...

Blog Post 

 

LTC6269-10 20kΩ Gain 210MHz Transimpedance Amplifier

Apr 7th 2015
The LTC®6268-10/LTC6269-10 is a single/dual 4GHz FET-input operational amplifier with extremely low input bias current and low input capacitance. It also features low input-referred current noise and voltage noise making it an ideal choice for high speed transimpedance amplifiers, and high-impedance sensor amplifiers. It ...

Circuit 

 

LTC6268 20kΩ Gain 65MHz Trans-Impedance Amplifier

Apr 7th 2015
The LTC®6268/LTC6269 is a single/dual 500MHz FET-input operational amplifier with extremely low input bias current and low input capacitance. It also features low inputreferred current noise and voltage noise making it an ideal choice for high speed transimpedance amplifiers, CCD output buffers, and high-impedance sensor ...

Circuit 

 

Paralleling Amplifiers Increases Output Drive

Apr 1st 2015
There are several circuit techniques that increase the output drive capability of an amplifier. One method uses external bipolar transistors as a push-pull circuit to provide additional drive. Another method uses two different amplifiers in a composite amplfier configuration as detailed in Application Note 21 to leverage ...

Blog Post 

 

Avoid Amplifier Output Driver Saturation When Using pA Bias Current Amplifiers with High Source Impedance Sensors

Jon Munson - Applications Engineer
Kevin B. Scott - Senior Strategic Marketing Engineer
Mar 26th 2015
Need for Low Bias Current Amplfiers When taking sensor measurements, the type of sensor excitation used varies greatly; it can be a DC signal, an AC signal, a voltage source, a current source or a pulsed source to name a few. When using current source excitation or when using a high impedance sensor, the amplifier's bias current ...

Blog Post 

 

20μA Op Amp Provides 30μV Precision

Mar 23rd 2015
MILPITAS, CA - March 23, 2015 - Linear Technology introduces the LT6023, a dual 3V to 30V low power operational amplifier, featuring 30µV maximum input offset voltage and 60µs settling to 0.01%. Proprietary slew enhancement circuitry results in a fast, clean output step response with low power consumption. Specially designed ...

Press Release 

 

High Bandwidth, Very Low Input Bias Current Op Amp

Roger Kidson - Product Evaluation Engineer Mar 11th 2015
The LTC6268 is a new op amp with a unique combination of bandwidth, input and output characteristics. It has a gain bandwidth of 500MHz with a typical input bias current of only 3 femptoamps. The input capacitance is 0.45pF and the output can drive a 200Ω load. This combination of features can bring new levels of performance ...

Video 

 

Transimpedance Amplifier Noise Considerations

Feb 18th 2015
The LTC6268 and LTC6269 is a single/dual 500MHz FET-input operational amplifier with extremely low input bias current and low input capacitance. It also features low input referred current noise and voltage noise making it an ideal choice for high speed transimpedance amplifiers, CCD output buffers, and high-impedance ...

Blog Post 

 

Increase Amplifier Output Drive Using a Push-Pull Amplifier Stage

Feb 17th 2015
Many portable circuits require precision measurement capability along with low power operation to minimize current and battery drain. When searching for an amplifer with these requirements, it may be relatively easy to meet the low power and precision requirements, but the drive current may not be adequate for these low power ...

Blog Post 

 

DC2261A-B - LT6119-2 | Current Sense Amplifier, Reference and Comparators with POR

Feb 6th 2015
Demonstration circuit 2193A features the LT®6119, a high side current sense amplifier with comparators and a 400mV reference. The demo board circuit amplifies the voltage across an onboard current sense resistor, to provide a precision unipolar voltage output that is proportional to the sensed current. The board has two ...

Demo Board 

 

DC2261A-A - LT6119-1 | Current Sense Amplifier, Reference and Comparators with POR

Feb 6th 2015
Demonstration circuit 2193A features the LT®6119, a high side current sense amplifier with comparators and a 400mV reference. The demo board circuit amplifies the voltage across an onboard current sense resistor, to provide a precision unipolar voltage output that is proportional to the sensed current. The board has two ...

Demo Board 

 

Precision Op Amp Enables Fast Multiplexing at Low Power

Kris Lokere - Strategic Applications Manager Jan 23rd 2015
Introduction If you are designing a system that measures a number of analog voltages, but not all at the same time, you can reduce downstream circuitry by multiplexing the measurements into a single output signal, then serially process and digitize the original voltage levels using shared components. The benefit is that the ...

Blog Post 

 

DC2193A - LT6118 Demo Board | High Side Current Sense Amplifier with Reference and Comparator with POR Capability

Dec 8th 2014
Demonstration circuit 2193A features the LT®6118, a high side current sense amplifier with a comparator and a 400mV reference. The demo board circuit amplifies the voltage across an onboard current sense resistor, to provide a precision unipolar voltage output that is proportional to the sensed current. The board has one ...

Demo Board 

 

Low Power Precision Op Amp Allows Fast, Accurate Multiplexing

Kris Lokere - Strategic Applications Manager Nov 19th 2014
If you need to measure many analog voltages, but not necessarily all at the same time, then a common approach is to multiplex these signals together into one output signal, so that you can then process and digitize each of these original voltage levels one at a time using shared circuitry. But doing this right requires some ...

Video 

 

Robust High Voltage Over-The-Top Op Amps Maintain High Input Impedance with Inputs Driven Apart or When Powered Down

Glen Brisebois - Applications Engineer - Signal Conditioning Nov 5th 2014
Introduction Linear Technology’s Over-The-Top op amps have an input stage topology that allows them to operate closed loop well above the positive supply rail. The inputs remain high impedance when split apart in voltage and also when shut down or with complete loss of power supply. They are indispensable in robust ...

Blog Post 

 

Femtoamp Bias Current Op Amps Achieve 500MHz Gain Bandwidth for TIA & Buffer Applications

Sep 29th 2014
MILPITAS, CA - September 29, 2014 - Linear Technology announces the LTC6268 and LTC6269, FET-input single and dual op amps, which deliver outstanding performance for high speed and high dynamic range transimpedance amplifier (TIA) and buffer applications. With just 3fA bias current at 25°C and 4pA max over the entire -40°C ...

Press Release 

 

LT6237 Single Supply, Low Noise, Low Power, Bandpass Filter with Gain =10

Sep 25th 2014
The LT®6236/LT6237/LT6238 are single/dual/quad low noise, rail-to-rail output op amps that feature 1.1nV/√Hz input referred noise voltage density and draw only 3.5mA of supply current per amplifier. These amplifiers combine very low noise and supply current with a 215MHz gain bandwidth product and a 70V/μs slew ...

Circuit 

 

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