Texas Instruments INA168
The INA138 and INA168 (INA1x8) are high-side, unipolar, current shunt monitors. The device converts a differential input voltage to a current output. Both the INA138 and INA168 are available in SOT235 and are specified for the –40°C to 125°C temperature range.| Part No. | INA168 |
|---|---|
| Datasheet | INA168 Download |
| Manufacturer |  Texas Instruments |
| Description | High Side Measurement Current-Shunt Monitor |
| Buy | Stock & Price |
FEATURES
●1 Complete Unipolar High-Side Current Measurement Circuit● Wide Supply and Common-Mode Range
● INA138: 2.7 V to 36 V
● INA168: 2.7 V to 60 V
● Independent Supply and Input Common-Mode Voltages
● Single Resistor Gain Set
● Low Quiescent Current (25 µA Typical)
● Wide Temperature Range: –40°C to +125°C
● 5-Pin SOT-23 Package 2
APPLICATIONS
● Current Shunt Measurement: – Telephone, Computers● Portable and Battery-Backup Systems
● Battery Chargers
● Power Management
● Cell Phones
● Precision Current Source 3
DESCRIPTION
Wide input commonmode voltage range, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications. Input common-mode and power-supply voltages are independent and can range from 2.7 V to 36 V for the INA138 and 2.7 V to 60 V for the INA168. Quiescent current is only 25 µA, which permits connecting the power supply to either side of the current measurement shunt with minimal error. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100.
