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1 Features

? AEC-Q100 qualified for automotive applications:

– Temperature grade 1: ?40°C to 125°C, TA

? Functional Safety-Capable

– Documentation available to aid functional safety

system design

? Wide common-mode voltage:

– Operational voltage: ?5V to 110V

– Survival voltage: ?20V to 120V

? Bidirectional operation

? High small signal bandwidth: 1.1MHz (at all gains)

? Slew rate: 8V/μs

? Step response settling time to 1: 1μs

? Excellent CMRR: 166dB

? Accuracy:

– Gain error (maximum)

? Version A: ±0.01, ±1ppm/°C drift

? Version B: ±0.1, ±5ppm/°C drift

– Offset voltage (maximum)

? Version A: ±10μV, ±0.1μV/°C drift

? Version B: ±150μV, ±0.5μV/°C drift

? Available gains:

– INA296A1-Q1 : 10V/V

– INA296A2-Q1 : 20V/V

– INA296A3-Q1 : 50V/V

– INA296A4-Q1 : 100V/V

– INA296A5-Q1 : 200V/V

? Package options: SOT23-8, VSSOP-8, SOIC-8,

VSSOP-10

2 Applications

? DC/DC converter

? Battery management systems (BMS)

? Fuel cell control unit

? Smart junction box

3 Description

The INA296x-Q1 is an ultra-precise, bidirectional

current sense amplifier that can measure voltage

drops across shunt resistors over a wide commonmode

range from –5V to 110V, independent of

the supply voltage. The high-precision current

measurement is achieved through a combination of

low offset voltage (±10μV, maximum), small gain error

(±0.01, maximum) and a high DC CMRR (typical

166dB). The INA296x-Q1 is not only designed for high

voltage, bidirectional DC current measurements, but

also for high-speed applications (such as transient

detection and fast overcurrent protection) with a high

signal bandwidth of 1.1MHz and fast settling time.

The INA296x-Q1 operates from a single 2.7V to

20V supply, drawing 2.5mA of supply current. The

INA296x-Q1 is available in five gain options: 10V/V,

20V/V, 50V/V, 100V/V, and 200V/V. Multiple gain

options allow for optimization between available

shunt resistor values and wide output dynamic range

requirements.

The INA296x-Q1 is specified over operating

temperature range of ?40°C to 125°C.