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Solutions Search - Low Power Amplifiers (Is < 1mA/amp)

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 

 

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 

 

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 

 

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 

 

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 

 

High Accuracy, μPower, Over-Voltage Detector with Glitch Suppressor Using LTC1541 and LTC6994

May 4th 2016
An overvoltage detector which suppresses glitches is constructed from the LTC®1541 micropower op amp + comparator + voltage reference and LTC6994-1 TimerBlox® delay block/debouncer. In this circuit, the LTC1541 comparator detects power rail overvoltage conditions (including glitches). The built-in op amp inverts this ...

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 

 

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 

 

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 

 

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 

 

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 

 

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 

 

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 

 

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 

 

Micropower 30μV Op Amp Settles in 15μS to 0.0015%

Mar 31st 2014
MILPITAS, CA - March 31, 2014 - Linear Technology introduces the LT6020, a dual 3V to 30V fast settling operational amplifier, featuring 30µV maximum input offset voltage and 0.5µV/°C max VOS drift. While supply current is only 100µA maximum per amplifier, proprietary slew enhancement circuitry provides fast clean output ...

Press Release 

 

LTspice: Stability of Op Amp Circuits

Kris Lokere - Strategic Applications Manager Nov 6th 2013
We all know that feedback circuits can oscillate. We may even know some tricks of how to fix it. But wouldn’t it be nice if our simulation tool could show us exactly what is happening, and why? This video illustrates how to use the .AC analysis to look at open loop gain and phase of operational amplifier feedback circuits ...

Blog Post Video LTspice 

 

Precision 80μV Offset Op Amp Operates with 76V Input Range

Aug 6th 2013
MILPITAS, CA – August 6, 2013 – Linear Technology introduces the LT6015 single Over-the-Top® operational amplifier with outstanding precision over a 0V to 76V input common-mode voltage range. It incorporates multiple built-in fault tolerant features, resulting in no-compromise performance over wide operating supply and temperature ...

Press Release 

 

LT6015 Gain of 100 High Voltage Difference Amplifier with –5V/75V Common Mode Range

Jun 20th 2013
The LT®6015/LT6016/LT6017 are single/dual/quad rail-torail input operational amplifiers with input offset voltage trimmed to less than 50μV. These amplifiers operate on single and split supplies with a total voltage of 3V to 50V and draw only 315μA per amplifier. They are reverse battery protected, drawing very little ...

Circuit 

 

76V Over-the-Top® Input Op Amp Combines Precision, Versatility and Protection

Arnold Nordeng - Design Section Leader - Signal Conditioning Mar 20th 2013
With the increased-use of electronics in automotive and industrial applications, the need for robust and highly reliable components is essential to ensure a proper functioning system with low maintenance costs. Automotive applications, for example have hostile environments where electronic components may be exposed to a variety ...

Video 

 

DC591A - LT1490ACDD | Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp in DFN package

Mar 13th 2013
...

Demo Board 

 

Precision 50μV Offset Op Amp Operates with 76V Input Range

Feb 14th 2013
MILPITAS, CA – February 14, 2013 – Linear Technology introduces the LT6016 and LT6017, dual and quad wide input range operational amplifiers. These amplifiers combine high precision with the ruggedness and versatility of LTC’s unique Over-the-Top® architecture. Input offset voltage is 50µV max, input bias current is ...

Press Release 

 

LT6016 Extended Supply Current Boosted Gain of Three Amplifier Drives 100Ω Load to ±30V, with 600mA Current Limit

Nov 5th 2012
The LT®6015/LT6016/LT6017 are single/dual/quad rail-torail input operational amplifiers with input offset voltage trimmed to less than 50μV. These amplifiers operate on single and split supplies with a total voltage of 3V to 50V and draw only 315μA per amplifier. They are reverse battery protected, drawing very little ...

Circuit 

 

LT6016 Wide Input Range Current Sense Amp Goes Hi-Z When VSUPPLY Removed

Nov 5th 2012
The LT®6015/LT6016/LT6017 are single/dual/quad rail-torail input operational amplifiers with input offset voltage trimmed to less than 50μV. These amplifiers operate on single and split supplies with a total voltage of 3V to 50V and draw only 315μA per amplifier. They are reverse battery protected, drawing very little ...

Circuit 

 

LT6016: Precision High Voltage High Side Load Current Monitor

Nov 5th 2012
The LT6016/LT6017 are dual and quad rail-to-rail input operational amplifiers with input offset voltage trimmed to less than 50μV. These amplifiers operate on single and split supplies with a total voltage of 3V to 50V and draw only 315μA per amplifier. The Over-The-Top input stage of the LT6016/LT6017 is designed to provide ...

Circuit LTspice 

 

DC417B - DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp

Feb 1st 2012
DC417B - Demo Board ...

Demo Board 

 

Rail-to-Rail SiGe Op Amps Offer Unmatched Speed-Power Efficiency

Aug 24th 2010
MILPITAS, CA - August 24, 2010 - Linear Technology introduces the LTC6252/3/4 and LTC6255/6/7 single/dual/quad rail-to-rail operational amplifiers, providing unmatched speed-power efficiency in tiny packages.  The LTC6252/3/4 achieves 720MHz GBW product and 280V/us slew rate while consuming 3.3mA supply current. The LTC6255/6/7 ...

Press Release 

 

1.8V, 140uA, 100kHz, Lowpass Filter (Single-Ended Input and Differential Output)

Jun 10th 2010
The LTC6256 circuit shown here is a 2nd order, 100kHz, Butterworth lowpass filter. The filter’s differential output maximizes the dynamic range in very low voltage operation. The LTC6255/LTC6256/LTC6257 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, rail-to-rail input/output. ...

Circuit 

 

LT2940 Adjustable 0W to 10W Load Box with UVLO and Thermal Shutdown

Nov 30th 2009
The LT2940 measures a high side current and a differential voltage, multiplies them and outputs a current proportional to instantaneous power. Bidirectional high side currents and bipolar voltage differences are correctly handled by the four-quadrant multiplier and push-pull output stage, which allows the LT2940 to indicate ...

Circuit 

 

LT2940 1-Cell Monitor with Bottom-Side Sense

Nov 30th 2009
The LT2940 measures a high side current and a differential voltage, multiplies them and outputs a current proportional to instantaneous power. Bidirectional high side currents and bipolar voltage differences are correctly handled by the four-quadrant multiplier and push-pull output stage, which allows the LT2940 to indicate ...

Circuit 

 

Highest Efficiency Rail-to Rail Op Amp Achieves 180MHz at 1mA

Nov 12th 2009
MILPITAS, CA - November 12, 2009 - Linear Technology introduces the LTC6246, LTC6247 and LTC6248, a family of op amps that utilizes a power-efficient SiGe process to achieve 180MHz gain-bandwidth product and 90V/µs slew rate, while consuming just 1mA maximum supply current per amplifier. These single, dual and quad op amps also ...

Press Release 

 

DC907A-B - LTC6102, LT6100, LT1787, LTC2054, and LTC2439-1 (Requires DC590B) | Demo Board

Oct 22nd 2009
DC907A-B - Demo Board for:LTC2054 - Single Micropower Zero-Drift Operational AmplifiersLTC6102 - Precision Zero Drift Current Sense AmplifierLT1787 - Precision, High Side Current Sense AmplifiersLT6100 - Precision, Gain Selectable High Side Current Sense AmplifierLTC2439-1 - 8-/16-Channel 16-Bit No Latency Delta Sigma ADC ...

Demo Board QuikEval System 

 

Single 2.7V Supply 4MHz 4th Order Lowpass Butterworth Filter

Oct 2nd 2009
Benefiting from low voltage operation and rail-to-rail output, a low power filter that is suitable for antialiasing can be built as shown in this circuit. On a 2.7V supply the filter has a passband of approximately 4MHz with 2VP-P input signal and a stopband attenuation that is greater than –75dB at 43MHz. The resistor and ...

Circuit 

 

Sub-Microvolt Drift 3.5MHz CMOS Amplifiers Feature 1pA Bias Current and Low Noise

Sep 25th 2007
MILPITAS, CA – September 25, 2007 – Linear Technology Corporation introduces the LTC6081 and the LTC6082: CMOS Op-Amps that push the limits of precision with 3.5MHz gain-bandwidth and less than 90uV offset over the entire -40°C to +125°C temperature range. Featuring rail-to-rail input and output stages, the dual LTC6081 ...

Press Release 

 

1.6V High Precision Op Amps Consume Less then 1uA

Sep 28th 2006
MILPITAS, CA - September 28, 2006 - Linear Technology Corporation announces a new family of ultralow power op amps that set a new standard for precision low voltage operation and tiny footprint. The LT6003 (single), LT6004 (dual) and LT6005 (quad) amplifiers draw less than 1uA and operate from 1.6V to 16V. With input offset ...

Press Release 

 

Micro Power Oxygen Sensor

Sep 21st 2006
Micro Power Oxygen Sensor takes advantage of low and clean startup current characteristics and wide supply voltage range, 1.8V to 16V range. ...

Circuit 

 

First 1.8V Dual & Quad Op Amps in DFN Packages

Feb 28th 2006
MILPITAS, CA - February 28, 2006 -Linear Technology Corporation introduces the LT6001 and LT6002, the industry's first 1.8V dual and quad operational amplifiers available in a tiny DFN package. These micropower devices draw only 13uA per amplifier and have excellent performance characteristics. Input offset voltage is 500uV ...

Press Release 

 

High Accuracy Oxygen Sensor

Nov 17th 2005
High Accuracy Oxygen Sensor. Accuracy is achieved using a transimpedance approach. Reduction in noise gain gives a reduction in output offset error from 50mv to 500µa. ...

Circuit 

 

LTC6078/79 - 50uA CMOS Amplifier Equals Best Bipolar Op Amps with 0.7uV/°C Drift

Sep 12th 2005
MILPITAS, CA - September 12, 2005 - Linear Technology Corporation announces a new family of CMOS amplifiers that delivers extraordinary DC precision at the lowest possible supply current. With input DC characteristics similar to the best precision bipolar amplifiers, the LTC6078 dual and LTC6079 quad op amps offer a breakthrough ...

Press Release 

 

LTC6078 60Hz Notch Filter

Aug 16th 2005
High input impedance amplifiers are ideal for buffering high impedance networks. Here a twin-T notch filter is shown to reject 60Hz signal content by more the 60dB. Small size, low valued capacitors can be used at such a low frequency with high valued resistors when using a CMOS op amp. ...

Circuit LTspice 

 

2.7V to 5.5V Precision High Side Current Sense

Aug 16th 2005
This high side current sense amplifier works down to 2.7V. Even with such a low supply voltage, accuracy of the voltage sensed across resistor Rs is preserved due to the very low voltage offset error of the LTC6078 amplifier (7uV typical). ...

Circuit 

 

LTC6078 pH Probe Amplifier

Aug 16th 2005
pH Probe amplifiers require buffer amplifiers with an input impedance greater than 10^13 ohms. Without loading the probe, an output of approximately 60mV/pH unit is produce. The thermistor is added to provide first order compensation for the inherent temperature coefficient of the pH probe output. ...

Circuit LTspice 

 

Thermocouple Thermometer with Cold Junction Compensation

Aug 16th 2005
The LTC2997 is a high-accuracy analog output temperature sensor. It converts the temperature of an external sensor or its own temperature to an analog voltage output. A built-in algorithm eliminates errors due to series resistance between the LTC2997 and the sensor diode. ...

Circuit 

 

Reduced Power Infra-Red Diode Driver

Aug 16th 2005
Infra-Red LEDs can be used as continuously operating beams of light. Sensing a break in the path of light between the source and a photodiode receiver is often used in safety and alarm systems. To extend the run-time of the light source, the diode conducts the minimum current necessary, in this case 10mA. Controlling the duty ...

Circuit 

 

Accelerometer Signal Conditioner

Aug 16th 2005
A piezoelectric accelerometer responds to any physical movement by generating a charge proportional to the acceleration of the movement. This sensor has a capacitance of 750pF which produces a charge of 60pC per g of gravitational force. This charge is transferred to the 1000pF feedback capacitor for an output of 60mV/g. ...

Circuit 

 

Micropower Photodiode Amplifier

Aug 16th 2005
This is a basic photodiode amplifier which converts the tiny current output by the diode in response to light intensity to a buffered low impedance voltage source. CMOS amplifier's allow for the use of large feedback resistors and add very little input bias error current. For this Infra-Red diode the output changes 600mV for ...

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Precision Sample and Hold Amplifier

Sep 3rd 2004
CMOS amplifiers are very good for use in Sample-and-Hold circuits because the pA's of bias current does not drain off charge held on the hold capacitor. A dual amplifier can be used to buffer the input signal and also the hold capacitor. The slew rate of the circuit is limited by the output current limit of the input amplifier ...

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Hall Sensor Amplifier Optimizes Sensitivity vs Supply Current

Mar 1st 2004
Voltage across HALL-ELEMENT bridge is reduced to minimize bridge current from 2.5mA or 230µA then a dual LT6011 DC precision low current low drift and Vos OP AMP is used in an instrumentation AMP configuration at a gain of 101 to give a sensitivity of 40mV/mT. ...

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Simple Bidirectional DC Motor Speed Controller Without a Tachometer

Feb 13th 2001
For motor speed control without using a tachometer, the circuit in Figure 12 shows an approach. Using the enable feature of the LT1970A, the drive to the motor can be removed periodically. With no drive applied, the spinning motor presents a back EMF voltage proportional to its rotational speed. The LT1782 is a tiny rail-to-rail ...

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Micropower Integrating Current Sense

Jan 31st 2001
This circuit takes advantage of the microampere supply current and Rail-to-Rail input of the LT1494. Supply current is only 3uA during integration and 5uA at the end of integration. ...

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Self-Powered High Side Current Sense

Jan 31st 2001
This circuit takes advantage of the microampere supply current and Rail-to-Rail input of the LT1494. The circuit is simple because the supply draw is essentially equal to the load current developed through RA. This supply current is simply passed through RB to form an output voltage that is appropriately amplified. ...

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