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INA151

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High Common Mode Voltage Difference Amplifier

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Data sheet

INA151

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (min) (V) 2.7 Vs (max) (V) 20 CMRR (min) (dB) 120 Common-mode input low (min) (V) 4.3 Common-mode input high (max) (V) 110 Input offset (±) (max) (V) 0.00065 Iq (typ) (mA) 0.45 Slew rate (typ) (V/µs) 2 Voltage gain (min) (V/V) 0.2 Voltage gain (max) (V/V) 1 Small-signal bandwidth (typ) (Hz) 250000 Rating Catalog Operating temperature range (°C) -55 to 125 Gain drift (max) (ppm/°C) 5 Gain error (±) (max) (%) 0.03
Number of channels 1 Vs (min) (V) 2.7 Vs (max) (V) 20 CMRR (min) (dB) 120 Common-mode input low (min) (V) 4.3 Common-mode input high (max) (V) 110 Input offset (±) (max) (V) 0.00065 Iq (typ) (mA) 0.45 Slew rate (typ) (V/µs) 2 Voltage gain (min) (V/V) 0.2 Voltage gain (max) (V/V) 1 Small-signal bandwidth (typ) (Hz) 250000 Rating Catalog Operating temperature range (°C) -55 to 125 Gain drift (max) (ppm/°C) 5 Gain error (±) (max) (%) 0.03
SOT-23-THN (DDF) 8 8.12 mm² 2.9 x 2.8
  • Wide voltage ranges:
    • Operational common-mode voltage: 4.3V to 110V
    • Reverse protection voltage: Down to −­­85V
    • Differential input voltage: Up to ±5V
  • High precision in high common-mode voltage systems:
    • CMRR: 125dB (minimum) for G=1V/V, 2/3V/V
    • Gain error drift: 2ppm/ºC (maximum)
    • Gain error: ±0.03% (maximum) for G=1V/V
    • Offset voltage drift: ±0.6µV/ºC (maximum) for G=1V/V
    • Offset voltage: ±780µV (maximum) for G=1
  • Four gain variants:
    • A: G = 1V/V
    • B: G = 2/3V/V
    • C: G = 1/2V/V
    • D: G = 1/4V/V
  • Ultra-high input impedance (minimum of 1MΩ)
  • Enable/Disable Function:
    • Hi-Z output during disable
  • Bandwidth: 620kHz (typical) for G = 1V/V
  • Power supply range:
    • Supply range: 2.7V (±1.35V) to 20V (±10V)
    • Low quiescent current when enabled: 450µA (typical)
  • Specified temperature range: –40°C to 125°C
  • Wide voltage ranges:
    • Operational common-mode voltage: 4.3V to 110V
    • Reverse protection voltage: Down to −­­85V
    • Differential input voltage: Up to ±5V
  • High precision in high common-mode voltage systems:
    • CMRR: 125dB (minimum) for G=1V/V, 2/3V/V
    • Gain error drift: 2ppm/ºC (maximum)
    • Gain error: ±0.03% (maximum) for G=1V/V
    • Offset voltage drift: ±0.6µV/ºC (maximum) for G=1V/V
    • Offset voltage: ±780µV (maximum) for G=1
  • Four gain variants:
    • A: G = 1V/V
    • B: G = 2/3V/V
    • C: G = 1/2V/V
    • D: G = 1/4V/V
  • Ultra-high input impedance (minimum of 1MΩ)
  • Enable/Disable Function:
    • Hi-Z output during disable
  • Bandwidth: 620kHz (typical) for G = 1V/V
  • Power supply range:
    • Supply range: 2.7V (±1.35V) to 20V (±10V)
    • Low quiescent current when enabled: 450µA (typical)
  • Specified temperature range: –40°C to 125°C

The INA151 is a precision difference amplifier with an input common-mode voltage range of up to 110V above negative supply (recommended). The INA151 can accurately measure voltages in the presence of high common-mode voltage with a high common-mode rejection ratio of 125dB minimum and input impedance of >1.4MΩ and an offset voltage drift of 0.6µV/ºC for gain of 1V/V.

The INA151 is offered in gain options of 1V/V (INA151A), 2/3V/V (INA151B), ½ V/V (INA151C) and 1/4V/V ( INA151D).

The INA151 has an Enable/Disable (EN) pin that provide a high-impedance output to allow stacking multiple INA151 on the outputs. In many applications this reduces the need for an input multiplexer.

The INA151 is offered in standard 8-pin packages such as SOT-23.

The INA151 is a precision difference amplifier with an input common-mode voltage range of up to 110V above negative supply (recommended). The INA151 can accurately measure voltages in the presence of high common-mode voltage with a high common-mode rejection ratio of 125dB minimum and input impedance of >1.4MΩ and an offset voltage drift of 0.6µV/ºC for gain of 1V/V.

The INA151 is offered in gain options of 1V/V (INA151A), 2/3V/V (INA151B), ½ V/V (INA151C) and 1/4V/V ( INA151D).

The INA151 has an Enable/Disable (EN) pin that provide a high-impedance output to allow stacking multiple INA151 on the outputs. In many applications this reduces the need for an input multiplexer.

The INA151 is offered in standard 8-pin packages such as SOT-23.
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* Data sheet INA151 126dB Voltage Monitoring G=1 Amplifier With Enable/Disable Function datasheet (Rev. B) 10 Mar 2026

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User guide: PDF
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SLVMEV6.TSC (480 KB) - TINA-TI Reference Design
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INA151 TINA-TI Reference Design (INA151B Gain of 2/3)

SLVMEV8.TSC (42 KB) - TINA-TI Reference Design
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INA151 TINA-TI Reference Design (INA151C Gain of 1/2)

SLVMEW2.TSC (43 KB) - TINA-TI Reference Design
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INA151 TINA-TI SPICE Model (INA151A Gain of 1)

SLVMEV5.ZIP (6 KB) - TINA-TI Spice Model
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INA151 TINA-TI SPICE Model (INA151B Gain of 2/3)

SLVMEV7.ZIP (6 KB) - TINA-TI Spice Model
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INA151 TINA-TI SPICE Model (INA151C Gain of 1/2)

SLVMEW1.ZIP (6 KB) - TINA-TI Spice Model
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