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High-Side, Bidirectional Current Shunt Monitor (Rev. D)
Texas Instruments
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.
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 All trademarks are the property of their respective owners.
Related Datasheets
| Part Number | Description | Category |
| • INA138 | High-Side Measurement Current Shunt Monitor (Rev. C) | Actives - Sensors and Transducers |
| • INA139 | High-Side Measurement Current Shunt Monitor (Rev. D) | Actives - Sensors and Transducers |
| • INA168 | High-Side Measurement Current Shunt Monitor (Rev. C) | Actives - Sensors and Transducers |
| • INA169 | High-Side Measurement Current Shunt Monitor (Rev. D) | Actives - Sensors and Transducers |
| • INA193 | Current Shunt Monitor, -16V to +80V Common-Mode Range (Rev. E) | Actives - Sensors and Transducers |
| • INA195 | Current Shunt Monitor, -16V to +80V Common-Mode Range (Rev. E) | Actives - Sensors and Transducers |
| • INA200 | High-Side Measurement Current-ShuntMonitor with Comparator and Reference (Rev. B) | Actives - Sensors and Transducers |
| • INA206 | Unidirectional Measurement Current-Shunt Monitor with Dual Comparators (Rev. E) | Actives - Sensors and Transducers |
| • INA209 | High-Side Measurement, Bi-Directional Current/Power Monitor with I2C Interface (Rev. A) | Actives - Sensors and Transducers |
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