INA168 Series

2.7 to 60V, 800kHz Variable gain current sense amplifier

Catalog

2.7 to 60V, 800kHz Variable gain current sense amplifier

Part	Package / Case	Accuracy	Voltage - Input [Max]	Voltage - Input [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Function	Mounting Type	Sensing Method	Supplier Device Package
Texas Instruments INA168NA/3K	SC-74A SOT-753	0.5 %	60 V	2.7 V	125 °C	-40 °C	Current Monitor	Surface Mount	High-Side	SOT-23-5
Texas Instruments INA168NA/250	SC-74A SOT-753	0.5 %	60 V	2.7 V	125 °C	-40 °C	Current Monitor	Surface Mount	High-Side	SOT-23-5
Texas Instruments INA168NA/250G4	SC-74A SOT-753	0.5 %	60 V	2.7 V	125 °C	-40 °C	Current Monitor	Surface Mount	High-Side	SOT-23-5

Catalog

2.7 to 60V, 800kHz Variable gain current sense amplifier

Key Features

• Complete Unipolar High-Side Current Measurement CircuitWide Supply and Common-Mode RangeINA138: 2.7 V to 36 VINA168: 2.7 V to 60 VIndependent Supply and Input Common-Mode VoltagesSingle Resistor Gain SetLow Quiescent Current (25 µA Typical)Wide Temperature Range: –40°C to +125°C5-Pin SOT-23 PackageComplete Unipolar High-Side Current Measurement CircuitWide Supply and Common-Mode RangeINA138: 2.7 V to 36 VINA168: 2.7 V to 60 VIndependent Supply and Input Common-Mode VoltagesSingle Resistor Gain SetLow Quiescent Current (25 µA Typical)Wide Temperature Range: –40°C to +125°C5-Pin SOT-23 Package

Description

The INA138 and INA168 (INA1x8) are high-side, unipolar, current shunt monitors. Wide input common-mode 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. The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting. Both the INA138 and INA168 are available in SOT23-5 and are specified for the –40°C to 125°C temperature range. The INA138 and INA168 (INA1x8) are high-side, unipolar, current shunt monitors. Wide input common-mode 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. The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting. Both the INA138 and INA168 are available in SOT23-5 and are specified for the –40°C to 125°C temperature range.