INA151 110V, 125dB CMRR Precision Difference Amplifier With Enable/Disable

Function

1 Features

• 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: ±0.025% (maximum) for G=1V/V,

2/3V/V, 1/2V/V

– Offset voltage drift: ±0.6μV/ºC (maximum) for

G=1V/V

– Offset voltage: ±900μV (maximum) for G=1V/V

• 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: 430µA

(IQ(VS+) typical), −460μA ((IQ(VS−)typical)

• Specified temperature range: –40°C to 125°C

2 Applications

• Battery cell formation and test equipment

• Analog input module

• Mixed module (AI, AO, DI, DO)

• Precision Multifunction Input Output DAQ

75V

CELL

STACK

± 5 V

Charge

Current

INA151

ADC

5 V

BATTERY

CELL

VS+

VS

VREF

OUT

5 V

EN

DGND

3.3 V

INA151 Simplified Example Application Schematic

of INA151B

3 Description

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 common-

mode 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), 1/2V/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.

Package Information

PART

NUMBER(1)

VERSION

PACKAGE(2)

PACKAGE SIZE(3)

INA151

A (G=1)

DDF (SOT-23, 8)

2.9mm × 2.8mm

B (G=2/3)

C (G=1/2)

D (G=1/4)

(1)

See the Device Comparison Table.

(2)

For more information, see Section 11.

(3)

The package size (length × width) is a nominal value and

includes pins, where applicable.

INA151

SLVSIL6C – JANUARY 2026 – REVISED APRIL 2026

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.