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Solutions Search - Instrumentation Amplifiers

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 

 

2.7V to 5.5V Ultra High Precision Current Sense

Jan 6th 2003
This is a low-voltage, ultra-high-precision monitor featuring a Zero-Drift Instrumentation Amplifier (IA) that provides Rail-to-Rail inputs and outputs. Voltage gain is set by the feedback resistors. Accuracy of this circuit is set by the quality of resistors selected by the user, small-signal range is limited by VOL in single-supply ...

Circuit 

 

10°C to 40°C Thermistor Thermometer

Oct 26th 2001
The LT1789 is a micropower, precision instrumentation amplifiers that are optimized for single supply operation from 2.2V to 36V. The quiescent current is 95μA max, the inputs common mode to ground and the output swings within 110mV of ground. The gain is set with a single external resistor for a gain range of 1 to 1000 for ...

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 

 

LT1002 Three Op Amp Instrumentation Amplifier

Jan 1st 1998
Matched amplifiers are ideal for minimizing errors in a differential input gain stage. This stage is followed by a conventional difference amplifier to provide a single ended output signal. Resistor adjustments optimize the circuit to reject both ac and dc common mode input signals. ...

Circuit 

 

LT1002 Two Op Amp Instrumentation Amplifier

Jan 1st 1998
Just two precision amplifiers can be configured to create a differential to single ended instrumentation amplifier. Gain of this example is 100. Gain = R4/R3 * [1 + 1/2*(R2/R1 + R3/R4) + (R2+R3)/R5]. Trim R5 for gain accuracy. ...

Circuit LTspice 

 

±5V Precision Instrumentation Amplifier

Nov 16th 1992
A flying capacitor is ideal for virtually eliminating dc and low frequency common mode errors. This is desired for a low voltage differential to single ended instrumentation amplifier stage. ...

Circuit 

 

Single Battery, Micropower, Gain = 100, Instrumentation Amplifier

Jan 1st 1987
This is a classic two-opamp instrumentation configuration. The low voltage and micropower characteristics of the LT1078 provide operation on a 3V coin-cell supply. ...

Circuit 

 

85V, –100V Common Mode Range Instrumentation Amplifier (AV = 10)

Jan 1st 1987
The input section is a classic difference amplifier set to A=0.1 so that the Vcm is attenuated by 10x along with the signal of interest. The second section has A=100 so that the overall circuit has A=10 but yet supports a large Vcm working range. ...

Circuit 

 

Instrumentation Amplifier with Shield Driver

Jan 1st 1987
This is a variation on the standard 3-stage implementation of an Instrumentation Amplifier function. The gain resistor structure between the input op amps provides a mid-point potential that represents the average of the incoming signals. The average level is buffered and back-drives the shields of the signals so there are minimal ...

Circuit 

 

Picoampere Input Current, Triple Op Amp Instrumentation Amplifier with Bias Current Cancellation

Jan 1st 1987
The upper three opamps form a standard instrumentation amplifier. The additional opamp at the bottom is used to provide a bias current into all the inputs so that the source signal loading is minimized. The circuit takes advantage of the close matching of sections within the IC so that when the lower section is bias-canceled, ...

Circuit 

 

Current Output, High Speed, High Input Impedance Instrumentation Amplifi er

Jan 1st 1987
This is a variation on the standard 3-stage implementation of an Instrumentation Amplifier function. The output sense resistor, along with the extra op amp for feedback sensing, form a Howland current-source structure for generating precision output current. ...

Circuit 

 

Instrumentation Amplifier with ±300V Common Mode Range and CMRR > 150dB

Nov 1st 1983
The differential input voltage is sampled on a flying capacitor and then its charge is transferred to a fixed capacitor with is then amplified to produce an output voltage. The use of high voltage photo driven FET switches rejects very high input common mode voltages. ...

Circuit