INA2181A3IDSQR

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Texas Instruments

26V, DUAL CHANNEL, BI-DIRECTIONAL, 350KHZ CURRENT SENSE AMPLIFIER

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INA2181A3IDSQR

Active

Texas Instruments

26V, DUAL CHANNEL, BI-DIRECTIONAL, 350KHZ CURRENT SENSE AMPLIFIER

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Description

General part information

INA2181 Series

The INA181-Q1, INA2181-Q1, and INA4181-Q1 (INAx181-Q1) 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 –0.2V to 26V, independent of the supply voltage. The INAx181-Q1 family integrates a matched resistor gain network in four, fixed-gain device options: 20V/V, 50V/V, 100V/V, or 200V/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-Q1 draws a maximum supply current of 260µA; whereas, the dual-channel INA2181-Q1 draws a maximum supply current of 500µA, and the quad-channel INA4181-Q1 draws a maximum supply current of 900µA.

The INA181-Q1 is available in both the 6-pin, SOT-23 and SC70 packages. The INA2181-Q1 is available in a 10-pin, VSSOP package. The INA4181-Q1 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.

Technical Specifications

Parameters and characteristics for this part

Specification	INA2181A3IDSQR

-3db Bandwidth	150 kHz
Amplifier Type	Current Sense
Current - Input Bias	75 µA
Current - Supply	356 µA
Grade	Automotive
Mounting Type	Surface Mount
Number of Circuits	2
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Type	Rail-to-Rail
Package / Case	10-WFDFN Exposed Pad
Package Length	2 mm
Package Name	10-WSON
Package Width	2 mm
Qualification	AEC-Q100
Slew Rate	2 V/µs
Voltage - Input Offset	100 µV
Voltage - Supply Span (Max)	5.5 V
Voltage - Supply Span (Min)	2.7 V

INA2181 Series

AEC-Q100, 26V, dual channel, bi-directional, 350kHz current sense amplifier

Part	Qualification	Number of Circuits	Slew Rate	Current - Input Bias	Voltage - Supply Span (Max)	Package Name	Package Width	Package Length	Package / Case	Voltage - Supply Span (Min)	Current - Supply	-3db Bandwidth	Voltage - Input Offset	Grade	Amplifier Type	Mounting Type	Output Type	Operating Temperature (Max)	Operating Temperature (Min)	Gain Bandwidth Product
Texas Instruments INA2181A3IDSQT	AEC-Q100	2	2 V/µs	75 µA	5.5 V	10-WSON	2 mm	2 mm	10-WFDFN Exposed Pad	2.7 V	356 µA	150 kHz	100 µV	Automotive	Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C
Texas Instruments INA2181A1QDGSRQ1	AEC-Q100	2	2 V/µs	75 µA	5.5 V	10-MSOP 10-TFSOP 10-VSSOP	3 mm	0.118 in		2.7 V	356 µA	350 kHz	100 µV	Automotive	Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C	350 kHz
Texas Instruments INA2181A3IDSQR	AEC-Q100	2	2 V/µs	75 µA	5.5 V	10-WSON	2 mm	2 mm	10-WFDFN Exposed Pad	2.7 V	356 µA	150 kHz	100 µV	Automotive	Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C
Texas Instruments INA2181A4IDGSR		2	2 V/µs	75 µA	5.5 V	10-MSOP 10-TFSOP 10-VSSOP	3 mm	0.118 in		2.7 V	356 µA	105 kHz	100 µV		Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C
Texas Instruments INA2181A1IDSQT	AEC-Q100	2	2 V/µs	75 µA	5.5 V	10-WSON	2 mm	2 mm	10-WFDFN Exposed Pad	2.7 V	356 µA	350 kHz	100 µV	Automotive	Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C
Texas Instruments INA2181A1IDSQR	AEC-Q100	2	2 V/µs	75 µA	5.5 V	10-WSON	2 mm	2 mm	10-WFDFN Exposed Pad	2.7 V	356 µA	350 kHz	100 µV	Automotive	Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C
Texas Instruments INA2181A2IDGSR		2	2 V/µs	75 µA	5.5 V	10-MSOP 10-TFSOP 10-VSSOP	3 mm	0.118 in		2.7 V	356 µA	210 kHz	100 µV		Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C
Texas Instruments INA2181A3QDGSRQ1	AEC-Q100	2	2 V/µs	75 µA	5.5 V	10-MSOP 10-TFSOP 10-VSSOP	3 mm	0.118 in		2.7 V	356 µA	150 kHz	100 µV	Automotive	Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C	150 kHz
Texas Instruments INA2181A4QDGSRQ1	AEC-Q100	2	2 V/µs	75 µA	5.5 V	10-MSOP 10-TFSOP 10-VSSOP	3 mm	0.118 in		2.7 V	356 µA	105 kHz	100 µV	Automotive	Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C	105 kHz
Texas Instruments INA2181A4IDGST		2	2 V/µs	75 µA	5.5 V	10-MSOP 10-TFSOP 10-VSSOP	3 mm	0.118 in		2.7 V	356 µA	105 kHz	100 µV		Current Sense	Surface Mount	Rail-to-Rail	125 °C	-40 °C