INA170EA/2K5

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.

Applications

• CURRENT SHUNT MEASUREMENT: Automotive, Telephone, Computers, Power Systems, Test, General Instrumentation
• PORTABLE AND BATTERY-BACKUP SYSTEMS
• BATTERY CHARGERS
• POWER MANAGEMENT CELL PHONES

Key features

• COMPLETE BIDIRECTIONAL CURRENTMEASUREMENT 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