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INA126

ACTIVE

36V microPower (175-µA), 250-µV offset, precision instrumentation amplifier

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Data sheet

INA126

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 2.7 Input offset (±) (max) (µV) 250 Voltage gain (min) (V/V) 5 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 35 Features Low power CMRR (min) (dB) 83 Input offset drift (±) (max) (µV/°C) 3 Input bias current (±) (max) (nA) 25 Iq (typ) (mA) 0.175 Bandwidth at min gain (typ) (MHz) 0.2 Gain error (±) (max) (%) 0.5 Operating temperature range (°C) -55 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.012 Output swing headroom (to negative supply) (typ) (V) 0.8 Output swing headroom (to positive supply) (typ) (V) -0.75 Input common mode headroom (to negative supply) (typ) (V) 3.5 Input common mode headroom (to positive supply) (typ) (V) -3.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.7
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 2.7 Input offset (±) (max) (µV) 250 Voltage gain (min) (V/V) 5 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 35 Features Low power CMRR (min) (dB) 83 Input offset drift (±) (max) (µV/°C) 3 Input bias current (±) (max) (nA) 25 Iq (typ) (mA) 0.175 Bandwidth at min gain (typ) (MHz) 0.2 Gain error (±) (max) (%) 0.5 Operating temperature range (°C) -55 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.012 Output swing headroom (to negative supply) (typ) (V) 0.8 Output swing headroom (to positive supply) (typ) (V) -0.75 Input common mode headroom (to negative supply) (typ) (V) 3.5 Input common mode headroom (to positive supply) (typ) (V) -3.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.7
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • Low quiescent current: 175µA/channel
  • Wide supply range: ±1.35V to ±18V
  • Low offset voltage: 250µV maximum
  • Low offset drift: 3µV/°C maximum
  • Low noise: 35 nV/√Hz
  • Low input bias current: 25nA maximum
  • Temperature range: –40°C to +85°C
  • Multiple package options:
    • Single channel:
      • INA126P/PA 8-pin PDIP (P)
      • INA126U/UA 8-pin SOIC (D)
      • INA126E/EA 8-pin VSSOP (DGK)
    • Dual channels:
      • INA2126P/PA 16-pin PDIP (N)
      • INA2126U/UA 16-pin SOIC (D)
      • INA2126E/EA 16-pin SSOP (DBQ)
  • Low quiescent current: 175µA/channel
  • Wide supply range: ±1.35V to ±18V
  • Low offset voltage: 250µV maximum
  • Low offset drift: 3µV/°C maximum
  • Low noise: 35 nV/√Hz
  • Low input bias current: 25nA maximum
  • Temperature range: –40°C to +85°C
  • Multiple package options:
    • Single channel:
      • INA126P/PA 8-pin PDIP (P)
      • INA126U/UA 8-pin SOIC (D)
      • INA126E/EA 8-pin VSSOP (DGK)
    • Dual channels:
      • INA2126P/PA 16-pin PDIP (N)
      • INA2126U/UA 16-pin SOIC (D)
      • INA2126E/EA 16-pin SSOP (DBQ)

The INA126 and INA2126 (INAx126) are precision instrumentation amplifiers for accurate, low-noise, differential-signal acquisition. The two-op-amp design provides excellent performance with low quiescent current (175µA/channel). These features combined with a wide operating voltage range of ±1.35V to ±18V make the INAx126 a great choice for portable instrumentation and data acquisition systems.

Gain can be set from 5V/V to 10000V/V with a single external resistor. Precision input circuitry provides low offset voltage (250µV, maximum), low offset voltage drift (3µV/°C, maximum), and excellent common-mode rejection.

All versions are specified for the –40°C to +85°C industrial temperature range.

The INA126 and INA2126 (INAx126) are precision instrumentation amplifiers for accurate, low-noise, differential-signal acquisition. The two-op-amp design provides excellent performance with low quiescent current (175µA/channel). These features combined with a wide operating voltage range of ±1.35V to ±18V make the INAx126 a great choice for portable instrumentation and data acquisition systems.

Gain can be set from 5V/V to 10000V/V with a single external resistor. Precision input circuitry provides low offset voltage (250µV, maximum), low offset voltage drift (3µV/°C, maximum), and excellent common-mode rejection.

All versions are specified for the –40°C to +85°C industrial temperature range.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet INAx126 MicroPower Instrumentation Amplifiers datasheet (Rev. D) PDF | HTML Dec 11, 2025
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML Jul 27, 2021
Application brief Comprehensive Error Calculation for Instrumentation Amplifiers Mar 26, 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017

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