INA170
- 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
- CURRENT SHUNT MEASUREMENT:
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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.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | High-Side, Bidirectional Current Shunt Monitor datasheet (Rev. D) | 31 Jan 2006 | |
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 25 Jan 2022 | |
Analog Design Journal | A dual-polarity, bidirectional current-shunt monitor | 22 Oct 2008 | ||
Analog Design Journal | Q4 2008 Issue Analog Applications Journal | 22 Oct 2008 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
INA170 TINA-TI Reference Design (Rev. C)
CIRCUIT060035 — Bidirectional current sensing with a window comparator circuit
CIRCUIT060037 — Precision over-current latch circuit
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
TIDA-00442 — Shunt based Ground Fault Protection for Inverters Powered from 220Vac Supply Reference Design
Package | Pins | Download |
---|---|---|
VSSOP (DGK) | 8 | View options |
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