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INA151
  • INA151

INA151

PREVIEW

High Common Mode Voltage Difference Amplifier

Texas Instruments INA151 Product Info

1 April 2026 4

Parameters

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

Package

SOT-23-THN (DDF)-8-8.12 mm² 2.9 x 2.8

Features

  • High precision in high common-mode voltage systems:
    • CMRR: 125dB (minimum) at 110V for G=1V/V, 0.66V/V
    • Gain error drift: 2ppm/ºC (maximum) across all gains
    • Gain error: ±0.03% (maximum) for G=1
    • Offset voltage drift: ±0.6µV/ºC (maximum) across all gains
    • Offset voltage: ±780µV (maximum) for G=1
  • Four gain variants:
    • A: G = 1V/V
    • B: G = 0.66V/V
    • C: G = 0.5V/V
    • D: G = 0.25V/V
  • >1.4MΩ Ultra-high input impedance
  • 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: 450µA (typical)
  • Specified temperature range: –40°C to 125°C
  • High precision in high common-mode voltage systems:
    • CMRR: 125dB (minimum) at 110V for G=1V/V, 0.66V/V
    • Gain error drift: 2ppm/ºC (maximum) across all gains
    • Gain error: ±0.03% (maximum) for G=1
    • Offset voltage drift: ±0.6µV/ºC (maximum) across all gains
    • Offset voltage: ±780µV (maximum) for G=1
  • Four gain variants:
    • A: G = 1V/V
    • B: G = 0.66V/V
    • C: G = 0.5V/V
    • D: G = 0.25V/V
  • >1.4MΩ Ultra-high input impedance
  • 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: 450µA (typical)
  • Specified temperature range: –40°C to 125°C

Description

The INA151 is a precision voltage monitoring 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.

The INA151A version offers gain option of 1V/V, while the INA151B and INA151C and INA151D versions offer gain options of 0.66V/V, 0.5V/V and 0.25V/V respectively.

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

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

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