FEATURES

COMPLETE BIDIRECTIONAL CURRENT

MEASUREMENT CIRCUIT

WIDE SUPPLY RANGE: 2.7V to 40V

SUPPLY-INDEPENDENT COMMON-MODE

VOLTAGE: 2.7V TO 60V

RESISTOR PROGRAMMABLE GAIN SET

LOW QUIESCENT CURRENT: 75μA (typ)

MSOP-8 PACKAGE

APPLICATIONS

CURRENT SHUNT MEASUREMENT:

Automotive, Telephone, Computers, Power

Systems, Test, General Instrumentation

PORTABLE AND BATTERY-BACKUP

SYSTEMS

BATTERY CHARGERS

POWER MANAGEMENT

CELL PHONES

DESCRIPTION

The INA170 is a high-side, bidirectional current shunt monitor

featuring a wide input common-mode voltage range, low

quiescent current, and a tiny MSOP-8 package.

Bidirectional current measurement is accomplished by output

offsetting. The offset voltage level is set with an external

resistor and voltage reference. This permits measurement of

a bidirectional shunt current while using a single supply for

the INA170.

Input common-mode and power-supply voltages are independent.

Input voltage can range from +2.7V to +60V on any

supply voltage from +2.7V to +40V. Low 10μA input bias

current adds minimal error to the shunt current.

The INA170 converts a differential input voltage to a current

output. This current develops a voltage across an external

load resistor, setting any gain from 1 to over 100.

The INA170 is available in an MSOP-8 package, and is

specified over the extended industrial temperature range,

–40°C to +85°C with operation from –55°C to +125°C.