INA181 Series

26-V bi-directional 350-kHz current-sense amplifier

Catalog

26-V bi-directional 350-kHz current-sense amplifier

Part	Supplier Device Package	Current - Supply	-3db Bandwidth	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply Span (Min) [Min]	Amplifier Type	Voltage - Supply Span (Max) [Max]	Number of Circuits	Slew Rate	Output Type	Package / Case	Voltage - Input Offset	Current - Input Bias
Texas Instruments INA181A2IDBVT	SOT-23-6	260 µA	350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail	SOT-23-6
Texas Instruments INA181A2IDCKR	SC-70-6	195 µA	210 MHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail Single Ended	6-TSSOP SC-88 SOT-363	100 çV	75 µA
Texas Instruments INA181A2IDBVR	SOT-23-6	260 µA	350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail	SOT-23-6
Texas Instruments INA181A3IDBVR	SOT-23-6	260 µA	350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail	SOT-23-6
Texas Instruments INA181A4IDBVR	SOT-23-6	260 µA	350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail	SOT-23-6
Texas Instruments INA181A4IDBVT	SOT-23-6	260 µA	350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail	SOT-23-6
Texas Instruments INA181A1IDCKR	SC-70-6	195 µA	350 MHz 350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail Single Ended	6-TSSOP SC-88 SOT-363	100 çV	75 µA
Texas Instruments INA181A1IDBVT	SOT-23-6	260 µA	350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail	SOT-23-6	100 çV	75 µA
Texas Instruments INA181A1IDBVR	SOT-23-6	260 µA	350 kHz	Surface Mount	125 °C	-40 °C	2.7 V	Current Sense	5.5 V	1	2 V/µs	Rail-to-Rail	SOT-23-6	100 çV	75 µA

Catalog

26-V bi-directional 350-kHz current-sense amplifier

Key Features

• Common-mode range (V CM): –0.2 V to +26 VHigh bandwidth: 350 kHz (A1 devices)Offset voltage:±150 µV (maximum) at V CM = 0 V±500 µV (maximum) at V CM = 12 VOutput slew rate: 2 V/µsBidirectional current-sensing capabilityAccuracy:±1% gain error (maximum)1-µV/°C offset drift (maximum)Gain options:20 V/V (A1 devices)50 V/V (A2 devices)100 V/V (A3 devices)200 V/V (A4 devices)Quiescent current: 260 µA maximum (INA181)Common-mode range (V CM): –0.2 V to +26 VHigh bandwidth: 350 kHz (A1 devices)Offset voltage:±150 µV (maximum) at V CM = 0 V±500 µV (maximum) at V CM = 12 VOutput slew rate: 2 V/µsBidirectional current-sensing capabilityAccuracy:±1% gain error (maximum)1-µV/°C offset drift (maximum)Gain options:20 V/V (A1 devices)50 V/V (A2 devices)100 V/V (A3 devices)200 V/V (A4 devices)Quiescent current: 260 µA maximum (INA181)

Description

The INA181, INA2181, and INA4181 (INAx181) current sense amplifiers are designed for cost-optimized applications. These devices are part of a family of bidirectional, current-sense amplifiers (also called current-shunt monitors) that sense voltage drops across current-sense resistors at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INAx181 family integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift. These devices operate from a single 2.7-V to 5.5-V power supply. The single-channel INA181 draws a maximum supply current of 260 µA; whereas, the dual-channel INA2181 draws a maximum supply current of 500 µA, and the quad-channel INA4181 draws a maximum supply current of 900 µA. The INA181 is available in both the 6-pin, SOT-23 and SC70 packages. The INA2181 is available in 10-pin, VSSOP and WSON packages. The INA4181 is available in a 20-pin, TSSOP package. All device options are specified over the extended operating temperature range of –40°C to +125°C. The INA181, INA2181, and INA4181 (INAx181) current sense amplifiers are designed for cost-optimized applications. These devices are part of a family of bidirectional, current-sense amplifiers (also called current-shunt monitors) that sense voltage drops across current-sense resistors at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INAx181 family integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift. These devices operate from a single 2.7-V to 5.5-V power supply. The single-channel INA181 draws a maximum supply current of 260 µA; whereas, the dual-channel INA2181 draws a maximum supply current of 500 µA, and the quad-channel INA4181 draws a maximum supply current of 900 µA. The INA181 is available in both the 6-pin, SOT-23 and SC70 packages. The INA2181 is available in 10-pin, VSSOP and WSON packages. The INA4181 is available in a 20-pin, TSSOP package. All device options are specified over the extended operating temperature range of –40°C to +125°C.