Product details

Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 250 Gain (Min) (V/V) 4 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 0.8 Features Overvoltage Protection CMRR (Min) (dB) 107 Input offset drift (+/-) (Max) (uV/C) 2 Input bias current (+/-) (Max) (nA) 25 Iq (Typ) (mA) 0.46 Bandwidth at min gain (Typ) (MHz) 0.15 Gain error (+/-) (Max) (%) 0.5 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 0.4 Output swing headroom (to positive supply) (Typ) (V) -0.9 Input common mode headroom (to negative supply) (Typ) (V) 4.3 Input common mode headroom (to positive supply) (Typ) (V) -4.8 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.8 Gain non-linearity (+/-) (Max) (%) 0.004
Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 250 Gain (Min) (V/V) 4 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 0.8 Features Overvoltage Protection CMRR (Min) (dB) 107 Input offset drift (+/-) (Max) (uV/C) 2 Input bias current (+/-) (Max) (nA) 25 Iq (Typ) (mA) 0.46 Bandwidth at min gain (Typ) (MHz) 0.15 Gain error (+/-) (Max) (%) 0.5 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 0.4 Output swing headroom (to positive supply) (Typ) (V) -0.9 Input common mode headroom (to negative supply) (Typ) (V) 4.3 Input common mode headroom (to positive supply) (Typ) (V) -4.8 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.8 Gain non-linearity (+/-) (Max) (%) 0.004
  • Low Quiescent Current
  • Sleep Mode
  • Precision Voltage Reference
  • Low Offset Voltage
  • Low Offset Drift
  • Low Input Bias Current
  • High CMR
  • Low Noise
  • Input Protection
  • Wide Supply Range
  • Low Quiescent Current
  • Sleep Mode
  • Precision Voltage Reference
  • Low Offset Voltage
  • Low Offset Drift
  • Low Input Bias Current
  • High CMR
  • Low Noise
  • Input Protection
  • Wide Supply Range

The INA125 is a low power, high accuracy instrumentation amplifier with a precision voltage reference. It provides complete bridge excitation and precision differential-input amplification on a single integrated circuit.

The voltage reference is externally adjustable with pin-selectable voltages, allowing use with a variety of transducers. Sleep mode allows shutdown and duty cycle operation to save power.

The INA125 is a low power, high accuracy instrumentation amplifier with a precision voltage reference. It provides complete bridge excitation and precision differential-input amplification on a single integrated circuit.

The voltage reference is externally adjustable with pin-selectable voltages, allowing use with a variety of transducers. Sleep mode allows shutdown and duty cycle operation to save power.

Technical documentation

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* Data sheet INA125-DIE Instrumentation Amplifier With Precision Voltage Reference datasheet 04 Sep 2012
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 27 Jul 2021
Technical article What is an instrumentation amplifier? 09 Aug 2019
Technical article How to layout a PCB for an instrumentation amplifier 14 Oct 2016
Technical article Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) 25 Nov 2013

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