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Solutions Search - Precision Amplifiers (Vos<1mV, TCVos<2uV/c)

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 

 

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 

 

LT6018 Low Noise, High CMRR Instrumentation Amplifier

Jun 14th 2017
The LT®6018 is a 33V precision operational amplifier with excellent noise performance. With 0.1Hz to 10Hz noise of only 30nVP-P, the LT6018 is an outstanding choice for applications where 1/f noise impacts system performance. The LT6018 has excellent DC performance with a maximum offset voltage of 50μV and a maximum offset ...

Circuit LTspice 

 

LT6018 Low Noise Precision Current Monitor

Jun 14th 2017
The LT®6018 is a 33V precision operational amplifier with excellent noise performance. With 0.1Hz to 10Hz noise of only 30nVP-P, the LT6018 is an outstanding choice for applications where 1/f noise impacts system performance. The LT6018 has excellent DC performance with a maximum offset voltage of 50μV and a maximum offset ...

Circuit LTspice 

 

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 

 

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 

 

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 

 

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 

 

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 

 

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 

 

LTC3121 Single Li-Cell 3-LED Driver, 2.5V/4.2V to 175mA

Aug 27th 2015
The LTC®3121 is a synchronous step-up DC/DC converter with true output disconnect and inrush current limiting. The 1.5A current limit along with the ability to program output voltages up to 15V makes the LTC3121 well suited for a variety of demanding applications. Once started, operation will continue with inputs down to ...

Circuit 

 

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 

 

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 

 

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 

 

LT6237 Low Power Avalanche Photodiode Transimpedance Amplifier IS = 3.3mA

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 

 

LTC6102 Simple 500V Current Monitor

Aug 4th 2014
The LTC®6102/LTC6102HV are versatile, high voltage, highside current sense amplifiers. Their high supply voltage rating allows their use in many high side applications, while the low drift and offset ensure accuracy across a wide range of operating conditions. The LTC6102-1 is a version of the LTC6102 that includes a low ...

Circuit LTspice 

 

LTC6091 Multiplexer Application

Jul 14th 2014
The LTC®6091 is a dual, high voltage precision operational amplifier. The low noise, low bias current input stage is ideal for high gain configurations. The LTC6091 has low input offset voltage, a rail-to-rail output stage, and can be run from a single 140V or split ±70V supplies. ...

Circuit 

 

LTC6091 High Voltage Analog MUX

Jul 14th 2014
The LTC®6091 is a dual, high voltage precision operational amplifier. The low noise, low bias current input stage is ideal for high gain configurations. The LTC6091 has low input offset voltage, a rail-to-rail output stage, and can be run from a single 140V or split ±70V supplies. ...

Circuit 

 

LTC6091 Wide Common Mode Range 10x Gain Instrumentation Amplifier Typically <1mV Input-Referred Error

Jul 14th 2014
The LTC®6091 is a dual, high voltage precision operational amplifier. The low noise, low bias current input stage is ideal for high gain configurations. The LTC6091 has low input offset voltage, a rail-to-rail output stage, and can be run from a single 140V or split ±70V supplies. ...

Circuit 

 

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 

 

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 

 

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 

 

Wide Common Mode Range 10x Gain Instrumentation Amplifier

Oct 30th 2012
The LTC6090 is a high voltage precision operational amplifier. The low noise, low bias current input stage is ideal for high gain configurations. The LTC6090 has low input offset voltage, a rail-to-rail output stage, and can be run from a single 140V or split ±70V supplies. ...

Circuit 

 

Precision Nanoamp Bidirectional Current Source

Aug 6th 2007
This circuit sources and sinks just nanoamps of current with precision due to the low input bias current of the CMOS op amps. A buffered difference amplifier and an integrator force the voltage across a 10Megaohm set resistor to be 1/1000 of the control input voltage in either polarity. ...

Circuit 

 

LTC6081 Shock Sensor Amplifier (Accelerometer)

Aug 6th 2007
A shock sensor is a capacitive piezoelectric element which generates a charge under physical acceleration. This charge can be converted to a voltage and filtered using high valued resistors and a high input impedance CMOS amplifier such as the LTC6081. This circuit has a gain of 100 and output 109mV per g of acceleration. ...

Circuit LTspice 

 

LTC6081 Two Op Amp Instrumentation Amplifier

Aug 6th 2007
Instrumentation amplifiers present a high input impedance to a differential input signal source and provide a single ended output. This circuit uses the non-inverting inputs of each amplifier of the dual LTC6081 for the differential input terminals. The gain is set with external resistors to over 1000. A CMRR trim cancels the ...

Circuit LTspice 

 

Low Side Current Sense

Aug 6th 2007
Sensing the amount of current through a load on the low side has the disadvantage of raising the return connection to the load from ground. The advantage of such an approach is that it is very easy to implement using a basic non-inverting gain stage. The LTC6081 operates linearly down to ground also in this single supply example. ...

Circuit 

 

LTC6081 Single Supply Strain Gauge Amplifier

Aug 6th 2007
A dual CMOS amplifier with low supply voltage operation and rail to rail input and output performance makes single supply operation easy. This circuit provides a gain of 1001 to the small differential input signal from a low voltage strain gauge bridge transducer. High input impedance allows for high valued input resistors to ...

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 

 

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 

 

Six Decade Current Sensing Log Amplifier

Aug 16th 2005
The low pA's of bias current of CMOS amplifiers make them suitable for high input impedance current sensing applications. By taking advantage of the logarithmic relationship of a transistor base-emitter voltage to it's collector current a very wide range of measured input current can be converted to a voltage. In this circuit ...

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 

 

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 

 

LTC6078 Precision Ground Referenced Voltage Controlled Current Source

Aug 16th 2005
The control voltage, Vin, is converted to a charge on a capacitor that is referenced to ground. This charge is transferred to place a differential voltage across the output current programming resistor. The output current then flows into a ground referenced load for a precision single supply circuit without the need for a voltage ...

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 

 

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 

 

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 ...

Circuit 

 

LTC2054 Ultra-Precision, Wide Dynamic Range 10Hz Bandwidth Photodiode Amplifier

Jan 20th 2004
The low input bias current and input noise current, combined with low voltage offset, provide a precision signal monitor. A high degree of input sensitivity is provided to the circuit by the large dynamic range, characterized by low input offset and high DC gain of the LTC2054. ...

Circuit 

 

LTC6081/LT1025 Type K Thermocouple Signal Conditioner with ±350V Protection from Accidental Contact and Cold Junction Compensation

Dec 9th 2003
A high input impedance amplifier permits the use of large valued input resistors and retains signal accuracy. This is very useful for protecting both the amplifier and cold junction compensator in thermocouple applications as the sense element can often be inadvertently connected to destructive voltage potentials. The 1MΩ ...

Circuit 

 

Precision Photodiode Amplifier

Feb 1st 2001
The LT1880 provides a high degree of precision with very low bias current (IB = 150pA typical). Total output offset is below 262mV, worst-case, over temperature (0°C to 70°C). With a 5V output swing this implies a minimum 86dB dynamic range. ...

Circuit 

 

Single Supply Current Source for Platinum RTD

Feb 1st 2001
The LT1800's Precision and low bias input stage is used to good advantage in Fig. 5 Single Supply Current Source for Platinum RTD circuit. R4 and C1 stabilize the circuit making it insensitive to cable characteristics. Output is 1.00V at 0ºC and its gain factor is 3.85mV/ºC. ...

Circuit 

 

Single 2.7V to 20V Supply Current Source for –50°C to 600°C Platinum RTD

Apr 4th 2000
The LT6010 op amp combines low noise and high precision input performance with low power consumption and rail-to-rail output swing. Input offset voltage is trimmed to less than 35mV. The low drift and excellent long-term stability guarantee a high accuracy over temperature and over time. The 110pA maximum input bias current ...

Circuit 

 

Differential Bridge Amplifier with Gain Programmed through the Serial Interface and Analog to Digital Conversion (Standby Current Less than 100μA)

Apr 4th 2000
The LTC6915 is a precision programmable gain instrumentation amplifier. The gain can be programmed to 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, or 4096 through a parallel or serial interface. The CMRR is typically 125dB with a single 5V supply with any programmed gain. The offset is below 10μV with a temperature ...

Circuit 

 

Paralleled Voltage Regulators with Balanced Load Sharing

Jul 15th 1999
Paralleling voltage regulators to provide mode load current is a common technique. Forcing the amplifiers to share the load current equally is called ballasting. Using a precision low offset voltage amplifier to sense the output current from each regulator requires just milli-ohms of resistance, typically just a pcb circuit ...

Circuit 

 

Relative Humidity Sensor

Mar 2nd 1999
This sensor is a capacitive element that changes value with humidity. By charging the sensor with a fixed current for a fixed time interval, a voltage is developed that is directly proportional to the sensor capacitance value. ...

Circuit 

 

Precision Amplifier Drives 500ohm Load to ±10V

Jan 1st 1998
Two amplifiers can be combined to double the output current of just one amplifier. In this circuit the gain is arranged in such a way that ensures that each amplifier contributes half of the load current. One tenth of the output voltage is impressed across a resistor that is one fifth of the load resistor making its current ...

Circuit 

 

Platinum RTD Signal Conditioner with Curvature Correction

Jan 1st 1998
The value of the resistance of the RTD sensor is converted to a voltage by running a constant current, 50uA, through it. As the sensor heats the resistance increases and unbalances the bridges of 1K resistors. The amplifier restores balance by sourcing more current into the lower fixed 1K resistor thus producing an increasing ...

Circuit 

 

LT1007/LT1037 Ultrapure 1kHz Sine Wave Generator

Jan 1st 1998
A lamp provides amplitude stability while the very low noise amplifier creates a pure sine wave signal. The R an C values set the oscillator frequency and the feedback resistor sets the lamp current and output amplitude. ...

Circuit LTspice 

 

LT1002 Strain Gauge Signal Conditioner with Bridge Excitation

Jan 1st 1998
A buffered 7V reference provides a 5V excitation voltage to a balanced strain gauge resistor bridge. To provide a 0V output when the bridge is perfectly balanced, a second amplifier biases the bottom of the bridge to a negative compliment of the 5V excitation voltage. Using a dual matched amplifier package such as the LT1002 ...

Circuit 

 

Single Supply, Micropower Sample and Hold

Jan 1st 1998
Two op amp buffers, CMOS switches and a low leakage capacitor create a simple sample/hold circuit. The LT1006 has the ability to speed up response and reduce supply current through pin 8. When sampling the amplifiers are sped up to acquire signals in just 20us. When put into hold mode the supply current is throttled back to ...

Circuit 

 

Battery Powered (Li-Ion) Platinum RTD Signal Conditioner with Curvature Correction

Nov 26th 1996
The LT2078 is a micropower dual op amp in 8-pin small outline, standard surface mount package, and LT2079 is a micropower quad op amp offered in the standard 14-pin surface mount package. Both devices are optimized for single supply operation at 5V. ±15V specifications are also provided. ...

Circuit 

 

Paralleling LT1763 Linear Regulators for Higher Output Current

Apr 26th 1996
The LT1763 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 500mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 30μA quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in ...

Circuit 

 

5V Powered, Linearized Platinum RTD 0°C to 400°C ±0.05°C Signal Conditioner

Aug 17th 1995
The LT1014 is the first precision quad operational amplifier which directly upgrades designs in the industry standard 14-pin DIP LM324/LM348/OP-11/4156 pin configuration. It is no longer necessary to compromise specifications, while saving board space and cost, as compared to single operational amplifiers. ...

Circuit 

 

Thermistor Liquid Flowmeter

Aug 17th 1995
The LT1014 is the first precision quad operational amplifier which directly upgrades designs in the industry standard 14-pin DIP LM324/LM348/OP-11/4156 pin configuration. It is no longer necessary to compromise specifications, while saving board space and cost, as compared to single operational amplifiers. ...

Circuit 

 

50MHz Thermistor RMS to DC Converter Using 5V Supply

Aug 17th 1995
The LT1014 is the first precision quad operational amplifier which directly upgrades designs in the industry standard 14-pin DIP LM324/LM348/OP-11/4156 pin configuration. It is no longer necessary to compromise specifications, while saving board space and cost, as compared to single operational amplifiers. ...

Circuit 

 

LT1963A Adjustable Current Source

Oct 6th 1994
The LT®1963A series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it ...

Circuit 

 

LT1963A Paralleling of Regulators for Higher Output Current

Oct 6th 1994
The LT®1963A series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1μA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it ...

Circuit 

 

Positive Supply Rail Current Sense With Over-the-Top Op Amp

Oct 6th 1994
This is a configuration similar to an LT6100 implemented with generic components. A Rail-to-Rail or Over-the-Top input op amp type is required (for the first section). The first section is a variation on the classic high-side where the P-MOSFET provides an accurate output current into R2 (compared to a BJT). The second section ...

Circuit 

 

Accelerometer Amplifier with DC Servo

Aug 20th 1993
The feedback integrator amplifies the 100 Megohm feedback resistance to behave like about 1Gigohm, extending the low-frequency response downward by about an order of magnitude. ...

Circuit 

 

LT1006/LTC1043 Voltage Controlled Current Source with Ground Referred Input and Output

Nov 16th 1992
A flying capacitor device such as the LTC1043 can produce a precision voltage differential over a wide common mode range. Here it converts a ground referred input voltage directly to a differential voltage across a fixed resistor which then forces a precise current sourced at the circuit output. ...

Circuit 

 

5V Powered, Quartz-Stabilized 10kHz Voltage to Frequency Converter has 0.0015% Linearity and 8ppm/°C Temperature Coefficient

Nov 16th 1992
Almost all precision voltage-to-frequency converters utilize charge pump based feedback for stability. These schemes rely on a capacitor for stability. A great deal of effort towards this approach has resulted in high performance V to F converters. Obtaining temperature coefficients below 100ppm/°C requires careful attention ...

Circuit 

 

DC Accurate Composite Amplifier

Apr 1st 1992
Most individual op amp devices are optimized for either DC precision or for high speed operation. A composite amplifier configuration uses a precision low offset and drift amplifier to control the dc biasing of a high speed amplifier. This circuit has a gain bandwidth product of 1.25MHz yet an input offset voltage of only 25uV ...

Circuit 

 

LT6020 ±13.6V Input Range MUX Buffer

Sep 1st 1991
The LT6020 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, unique input stage circuitry allows the input impedance to remain high during ...

Circuit 

 

1Hz to 100MHz Voltage to Frequency Converter Has 160dB Dynamic Range, Runs From 5V Supply

Jan 1st 1990
This circuit achieves a wider dynamic range and higher output frequency than any commercially available voltage to frequency (V→F) converter. Its 100MHz full scale output (10% over range to 110MHz is provided) is at least ten times faster than available units. The circuit’s 160dB dynamic range (8 decades) allows continuous ...

Circuit 

 

Low Power Comparator with <10uV Hysteresis

Dec 1st 1989
The opamp is used as a precision comparator that drives an NPN transistor to form a logic-level output. Controlled positive feedback into a trim pin makes precision microvolt hysteresis control practical. ...

Circuit 

 

Saturated Standard Cell Amplifier

Dec 1st 1989
The amplifier is a standard non-inverting gain stage that can be trimmed to any specific output level. A low-leakage FET is used as a cell disconnect when power is removed. ...

Circuit 

 

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