INA2181A3IDGSR

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Texas Instruments

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

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DocumentsCurrent Sense Amplifiers (Rev. E)Bidirectional, Low-Side Phase Current Sensing With Onboard Overcurrent Detection (Rev. D)+11

INA2181A3IDGSR

Active

Texas Instruments

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

Deep-Dive with AI

DocumentsCurrent Sense Amplifiers (Rev. E)Bidirectional, Low-Side Phase Current Sensing With Onboard Overcurrent Detection (Rev. D)+11

Specifications Pricing Series Description Documents

Technical Specifications

Parameters and characteristics commom to parts in this series

Specification	INA2181A3IDGSR	INA2181 Series

-3db Bandwidth	150 kHz	105 - 350 kHz
Amplifier Type	Current Sense	Current Sense
Current - Input Bias	75 µA	75 µA
Current - Supply	356 µA	356 µA
Gain Bandwidth Product	-	105 - 350 kHz
Grade	-	Automotive
Mounting Type	Surface Mount	Surface Mount
Number of Circuits	2	2
Operating Temperature [Max]	125 °C	125 °C
Operating Temperature [Min]	-40 °C	-40 °C
Output Type	Rail-to-Rail	Rail-to-Rail
Package / Case	10-TFSOP, 10-MSOP	10-WFDFN Exposed Pad, 10-TFSOP, 10-MSOP
Qualification	-	AEC-Q100
Slew Rate	2 V/µs	2 V/µs
Supplier Device Package	10-VSSOP	10-WSON (2x2), 10-VSSOP
Voltage - Input Offset	100 çV	100 çV
Voltage - Supply Span (Max) [Max]	5.5 V	5.5 V
Voltage - Supply Span (Min) [Min]	2.7 V	2.7 V

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)	2500	$ 0.25
Texas Instruments	LARGE T&R	1	$ 0.49
		100	$ 0.38
		250	$ 0.28
		1000	$ 0.20

INA2181 Series

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

Part	Supplier Device Package	Slew Rate	Voltage - Supply Span (Max) [Max]	Grade	Current - Supply	Voltage - Input Offset	-3db Bandwidth	Mounting Type	Number of Circuits	Voltage - Supply Span (Min) [Min]	Amplifier Type	Package / Case	Current - Input Bias	Qualification	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Gain Bandwidth Product
Texas Instruments INA2181A4IDSQR	10-WSON (2x2)	2 V/µs	5.5 V	Automotive	356 µA	100 çV	105 kHz	Surface Mount	2	2.7 V	Current Sense	10-WFDFN Exposed Pad	75 µA	AEC-Q100	Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A1IDGST	10-VSSOP	2 V/µs	5.5 V		356 µA	100 çV	350 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA		Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A3IDGSR	10-VSSOP	2 V/µs	5.5 V		356 µA	100 çV	150 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA		Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A3IDSQR	10-WSON (2x2)	2 V/µs	5.5 V	Automotive	356 µA	100 çV	150 kHz	Surface Mount	2	2.7 V	Current Sense	10-WFDFN Exposed Pad	75 µA	AEC-Q100	Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A3QDGSRQ1	10-VSSOP	2 V/µs	5.5 V	Automotive	356 µA	100 çV	150 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA	AEC-Q100	Rail-to-Rail	-40 °C	125 °C	150 kHz
Texas Instruments INA2181A4IDGST	10-VSSOP	2 V/µs	5.5 V		356 µA	100 çV	105 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA		Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A2QDGSRQ1	10-VSSOP	2 V/µs	5.5 V	Automotive	356 µA	100 çV	210 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA	AEC-Q100	Rail-to-Rail	-40 °C	125 °C	210 kHz
Texas Instruments INA2181A4IDGSR	10-VSSOP	2 V/µs	5.5 V		356 µA	100 çV	105 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA		Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A2IDGSR	10-VSSOP	2 V/µs	5.5 V		356 µA	100 çV	210 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA		Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A1IDSQR	10-WSON (2x2)	2 V/µs	5.5 V	Automotive	356 µA	100 çV	350 kHz	Surface Mount	2	2.7 V	Current Sense	10-WFDFN Exposed Pad	75 µA	AEC-Q100	Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A1QDGSRQ1	10-VSSOP	2 V/µs	5.5 V	Automotive	356 µA	100 çV	350 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA	AEC-Q100	Rail-to-Rail	-40 °C	125 °C	350 kHz
Texas Instruments INA2181A2IDGST	10-VSSOP	2 V/µs	5.5 V		356 µA	100 çV	210 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA		Rail-to-Rail	-40 °C	125 °C
Texas Instruments INA2181A4QDGSRQ1	10-VSSOP	2 V/µs	5.5 V	Automotive	356 µA	100 çV	105 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA	AEC-Q100	Rail-to-Rail	-40 °C	125 °C	105 kHz
Texas Instruments INA2181A1IDGSR	10-VSSOP	2 V/µs	5.5 V		356 µA	100 çV	350 kHz	Surface Mount	2	2.7 V	Current Sense	10-MSOP, 10-TFSOP	75 µA		Rail-to-Rail	-40 °C	125 °C

Description

General part information

INA2181 Series

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.