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Solutions Search - Differential To Single Ended Conversion

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 

 

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 

 

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 

 

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 

 

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 

 

Difference Amplifier

Apr 29th 2011
The LT5400 is a quad resistor network with excellent matching specifications over the entire temperature range. All four resistors can be accessed and biased independently, making the LT5400 a convenient and versatile choice for any application that can benefit from matched resistors. These resistor networks provide precise ...

Circuit 

 

LT1567 A Differential Input-to-Single-Ended Output Amplifier

Oct 8th 2001
This circuit shows a circuit for converting a differential input to a single-ended output. For a gain equal to one (R1 = R2 = 604W and VOUT = V2 – V1) the input referred differential voltage noise density is 9nV/rtHz and differential input signal-to-noise ratio is 80.9dB with 0.2VRMS input signal in a 4MHz noise bandwidth. ...

Circuit LTspice 

 

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 

 

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 

 

±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 

 

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 

 

±250V Common Mode Range Difference Amplifier (AV = 1)

Jan 1st 1987
This is a modified difference amplifier- it has effectively added resistances from each input to ground to attenuate the common mode signal. This allows the wide input range without exceeding the Vcm of the opamp. ...

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 

 

Megaohm Input Impedance Gain of 10 Difference Amplifier

Jan 1st 1987
THE USEFULNESS OF DIFFERENCE AMPLIFIERS IS LIMITED BY THE FACT THAT THE INPUT RESISTANCE IS EQUAL TO THE SOURCE RESISTANCE. THE PICO-AMPERE OFFSET CURRENT AND LOW CURRENT NOISE OF THE LT1077 ALLOWS THE USE OF 1M SOURCE RESISTORS WITHOUT DEGRADATION IN PERFORMANCE. IN ADDITION, WITH MEGAOHM RESISTORS MICROPOWER OPERATION CAN ...

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 ±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