INA600 Low-Power, 2.7V to 40V Attenuating Difference Amplifier With >1MΩ Input

Impedance for Cost-Optimized Designs

1 Features

• Ultra-high input impedance: >1MΩ

• Supply range: 2.7V (±1.35V) to 40V (±20V)

• Input voltage range: (V–) – 40V to (V–) + 85V

• Precision voltage monitoring in noisy systems:

– CMRR: 100dB (typical, G = 1/5)

– Gain error: ±0.01% (typical)

– Gain drift : ±1ppm/°C (typical)

• Available gains:

– INA600A: 1/5

– INA600B: 1/10

– INA600C: 1/12

– INA600D: 1/18

– INA600E: 1/24

– INA600F: 1/36

• –3dB bandwidth: ≥200kHz

• Drives 400pF with ≤20% overshoot (typical)

• Low quiescent current: 65µA (typical)

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

2 Applications

• Battery cell formation and test equipment

• String inverters

• EV charging station power modules

• Battery energy storage systems

• Power tools

• Industrial AC/DC

• Wearable fitness and activity monitors

+

–

RIN

V+

OUT

V─

IN─

IN+

REF

Based on gain

Based on gain

RIN

INA600 Simplified Internal Schematic

3 Description

The INA600 is a voltage-sensing difference amplifier

with precision matched resistors that offer attenuating

gain options. The precision matched integrated

resistors saves BOM costs and board space by

removing the need for precise and low tolerance

external resistors.

The INA600 offers high input impedance of >1MΩ

and low quiescent current of 65µA. The device can

handle up to –40V to +85V of input voltage, attenuate

the voltage down with great accuracy, and interface

the voltage to the low voltage ADC while rejecting

any common-mode errors such as ground bounce,

switching ripples, AC mains and so forth. The device

achieves a maximum gain error of ±0.05%, and a

maximum gain drift of 5ppm/°C along with 89dB of

minimum common-mode rejection ratio (G = 1/5).

This combination of specifications makes the INA600

a great choice for a variety of level translation,

differential to single-ended applications, including

any voltage monitoring of batteries or power rails.

The INA600 interfaces directly to low-speed, analog-

to-digital converters (ADC) and therefore is an

excellent choice for replacing discrete implementation

of difference amplifiers built with commodity amplifiers

and discrete resistors. The INA600 is offered in

standard 6-pin SOT-23 and SC70 packages.

Package Information

PART

NUMBER(1)

VERSION

PACKAGE(2)

PACKAGE SIZE(5)

INA600

A

DBV (SOT-23, 6)

2.9mm × 2.8mm

DCK (SC70, 6)(3)

2.1mm × 1.25mm

B

DBV (SOT-23, 6)

2.9mm × 2.8mm

DCK (SC70, 6)(3)

2.1mm × 1.25mm

C(4)

DBV (SOT-23, 6) (3) 2.9mm × 2.8mm

DCK (SC70, 6)(3)

2.1mm × 1.25mm

D(4)

DBV (SOT-23, 6) (3) 2.9mm × 2.8mm

DCK (SC70, 6)(3)

2.1mm × 1.25mm

E(4)

DBV (SOT-23, 6) (3) 2.9mm × 2.8mm

DCK (SC70, 6)(3)

2.1mm × 1.25mm

F

DBV (SOT-23, 6)

2.9mm × 2.8mm

DCK (SC70, 6)(3)

2.1mm × 1.25mm

(1)

See Device Comparison.

(2)

For more information, see Section 11.

(3)

This package is preview only.

(4)

This version is preview only.

(5)

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

includes pins, where applicable.

INA600

SBOSAM3A – JULY 2025 – REVISED AUGUST 2025

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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.