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
Qualification	AEC-Q100
Slew Rate	2 V/µs
Supplier Device Package	10-WSON (2x2)
Voltage - Input Offset	100 çV
Voltage - Supply Span (Max) [Max]	5.5 V
Voltage - Supply Span (Min) [Min]	2.7 V

INA2181-Q1 Series

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

Part	Voltage - Input Offset	Amplifier Type	Voltage - Supply Span (Min) [Min]	-3db Bandwidth	Mounting Type	Current - Input Bias	Package / Case	Current - Supply	Supplier Device Package	Qualification	Slew Rate	Grade	Voltage - Supply Span (Max) [Max]	Number of Circuits	Operating Temperature [Min]	Operating Temperature [Max]	Output Type	Package / Case [x]	Package / Case [x]	Gain Bandwidth Product
Texas Instruments INA2181A3IDSQR	100 çV	Current Sense	2.7 V	150 kHz	Surface Mount	75 µA	10-WFDFN Exposed Pad	356 µA	10-WSON (2x2)	AEC-Q100	2 V/µs	Automotive	5.5 V	2	-40 °C	125 °C	Rail-to-Rail
Texas Instruments INA2181A4IDGSR	100 çV	Current Sense	2.7 V	105 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP		2 V/µs		5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in
Texas Instruments INA2181A1IDSQR	100 çV	Current Sense	2.7 V	350 kHz	Surface Mount	75 µA	10-WFDFN Exposed Pad	356 µA	10-WSON (2x2)	AEC-Q100	2 V/µs	Automotive	5.5 V	2	-40 °C	125 °C	Rail-to-Rail
Texas Instruments INA2181A2IDGSR	100 çV	Current Sense	2.7 V	210 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP		2 V/µs		5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in
Texas Instruments INA2181A3QDGSRQ1	100 çV	Current Sense	2.7 V	150 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP	AEC-Q100	2 V/µs	Automotive	5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in	150 kHz
Texas Instruments INA2181A4IDGST	100 çV	Current Sense	2.7 V	105 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP		2 V/µs		5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in
Texas Instruments INA2181A1IDGST	100 çV	Current Sense	2.7 V	350 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP		2 V/µs		5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in
Texas Instruments INA2181A2QDGSRQ1	100 çV	Current Sense	2.7 V	210 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP	AEC-Q100	2 V/µs	Automotive	5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in	210 kHz
Texas Instruments INA2181A2IDGST	100 çV	Current Sense	2.7 V	210 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP		2 V/µs		5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in
Texas Instruments INA2181A3IDGSR	100 çV	Current Sense	2.7 V	150 kHz	Surface Mount	75 µA	10-MSOP 10-TFSOP	356 µA	10-VSSOP		2 V/µs		5.5 V	2	-40 °C	125 °C	Rail-to-Rail	3 mm	0.118 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.75
		10	$ 0.66
		25	$ 0.62
		100	$ 0.51
		250	$ 0.47
		500	$ 0.40
		1000	$ 0.32
	Digi-Reel®	1	$ 0.75
		10	$ 0.66
		25	$ 0.62
		100	$ 0.51
		250	$ 0.47
		500	$ 0.40
		1000	$ 0.32
	Tape & Reel (TR)	3000	$ 0.29
		6000	$ 0.27
		15000	$ 0.26
		30000	$ 0.25
Texas Instruments	LARGE T&R	1	$ 0.49
		100	$ 0.38
		250	$ 0.28
		1000	$ 0.20

Description

General part information

INA2181-Q1 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.