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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: ?5 V to +110 V

– Survival voltage: ?20 V to +120 V

? Bidirectional operation

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

? Slew rate: 8 V/μs

? Step response settling time to 1: 1 μs

? Excellent CMRR: 166 dB

? Accuracy:

– Gain error (maximum)

? Version A: ±0.01, ±1 ppm/°C drift

? Version B: ±0.1, ±5 ppm/°C drift

– Offset voltage (maximum)

? Version A: ±10 μV, ±0.1 μV/°C drift

? Version B: ±150 μV, ±0.5 μV/°C drift

? Available gains:

– INA296A1-Q1 : 10 V/V

– INA296A2-Q1 : 20 V/V

– INA296A3-Q1 : 50 V/V

– INA296A4-Q1 : 100 V/V

– INA296A5-Q1 : 200 V/V

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

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 than can measure voltage

drops across shunt resistors over a wide commonmode

range from –5 V to 110 V, independent

of the supply voltage. The high-precision current

measurement is achieved through a combination

of low offset voltage (±10 μV, maximum), small

gain error (±0.01, maximum) and a high DC

CMRR (typical 166 dB). 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 1.1 MHz

and fast settling time.

The INA296x-Q1 operates from a single 2.7 V to

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

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

20 V/V, 50 V/V, 100 V/V, and 200 V/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 and is offered

in a space-saving 8-pin SOT-23 and 8-pin VSSOP

package.