INA138-Q1

汽车级、36V、高侧、电流输出电流分流监控器

The and INA168-Q1 INA1x8-Q1 are high-side, unidirectional, current sense amplifiers. Wide input common-mode voltage range, low quiescent current, and TSSOP and SOT-23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent, and range from 2.7 V to 36 V for the INA138-Q1, and 2.7 V to 60 V for the INA168-Q1. Quiescent current is only 25 µA, which permits connecting the power supply to either side of the current-measurement shunt with minimal error.

The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.

Both devices are available in a TSSOP-8 package. The INA168-Q1 is also available in a SOT-23-5 package. Both devices are specified for the –40°C to +125°C temperature range.

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Qualified for Automotive Applications

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AEC-Q100 Qualified With the Following Results:

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Device Temperature Grade 1: –40°C to 125°C

Ambient Operating Temperature Range

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Device HBM ESD Classification Level 2

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Device CDM ESD Classification Level C6

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Complete Unipolar High-Side Current-Measurement Circuit

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Wide Supply and Common-Mode Ranges

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INA138-Q1: 2.7 V to 36 V

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INA168-Q1: 2.7 V to 60 V

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Independent Supply and Input Common-Mode Voltages

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Single Resistor Gain Set

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Low Quiescent Current 25 µA Typical

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Wide Temperature Range: –40°C to +125°C

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Packages: TSSOP-8, SOT-23-5 INA168-Q1