Integrated Circuits (ICs)

INA241A1IDDFR

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-5-V TO 110-V BIDIRECTIONAL ULTRAPRECISE CURRENT SENSE AMPLIFIER WITH ENHANCED PWM REJECTION

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DocumentsSimplifying high-voltage sensing with Hall-effect current sensors INA241x –5V to 110V, Bidirectional, Ultra-Precise Current Sense Amplifier With Enhanced PWM Rejection datasheet (Rev. D)+11

Integrated Circuits (ICs)

INA241A1IDDFR

Active

Texas Instruments

-5-V TO 110-V BIDIRECTIONAL ULTRAPRECISE CURRENT SENSE AMPLIFIER WITH ENHANCED PWM REJECTION

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Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	INA241A1IDDFR

-3db Bandwidth	1.1 MHz
Amplifier Type	Current Sense
Current - Input Bias	35 µA
Current - Supply	2.5 mA
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	SOT-23-8 Thin, TSOT-23-8
Slew Rate	8 V/µs
Supplier Device Package	TSOT-23-8
Voltage - Input Offset	5 çV
Voltage - Supply Span (Max) [Max]	20 V
Voltage - Supply Span (Min) [Min]	2.7 V

INA241A Series

-5-V to 110-V bidirectional ultraprecise current sense amplifier with enhanced PWM rejection

Part	Mounting Type	Output Type	Slew Rate	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Input Offset	Voltage - Supply Span (Min) [Min]	Amplifier Type	Current - Input Bias	Voltage - Supply Span (Max) [Max]	Current - Supply	Supplier Device Package	Number of Circuits	-3db Bandwidth	Package / Case [custom]	Package / Case
Texas Instruments INA241A4IDR	Surface Mount	Single-Ended	8 V/µs	-40 °C	125 °C	8-SOIC	3.9 mm	0.154 in	3 µV	2.7 V	Current Sense	35 µA	20 V	2.5 mA	8-SOIC	1	1.1 MHz
Texas Instruments INA241A5IDGKR	Surface Mount	Single-Ended	8 V/µs	-40 °C	125 °C	8-MSOP 8-TSSOP			2 çV	2.7 V	Current Sense	35 µA	20 V	2.5 mA		1	1.1 MHz	0.118 in	3 mm
Texas Instruments INA241A3IDDFR	Surface Mount		8 V/µs	-40 °C	125 °C	SOT-23-8 Thin TSOT-23-8			3 µV	2.7 V	Current Sense	35 µA	20 V	2.5 mA	TSOT-23-8	1	1.1 MHz
Texas Instruments INA241A2IDDFR	Surface Mount		8 V/µs	-40 °C	125 °C	SOT-23-8 Thin TSOT-23-8			3 µV	2.7 V	Current Sense	35 µA	20 V	2.5 mA	TSOT-23-8	1	1.1 MHz
Texas Instruments INA241A1IDR	Surface Mount	Single-Ended	8 V/µs	-40 °C	125 °C	8-SOIC	3.9 mm	0.154 in	5 çV	2.7 V	Current Sense	35 µA	20 V	2.5 mA	8-SOIC	1	1.1 MHz
Texas Instruments INA241A3IDR	Surface Mount	Single-Ended	8 V/µs	-40 °C	125 °C	8-SOIC	3.9 mm	0.154 in	3 µV	2.7 V	Current Sense	35 µA	20 V	2.5 mA	8-SOIC	1	1.1 MHz
Texas Instruments INA241A1IDGKR	Surface Mount	Single-Ended	8 V/µs	-40 °C	125 °C	8-MSOP 8-TSSOP			5 çV	2.7 V	Current Sense	35 µA	20 V	2.5 mA		1	1.1 MHz	0.118 in	3 mm
Texas Instruments INA241A1IDDFR	Surface Mount		8 V/µs	-40 °C	125 °C	SOT-23-8 Thin TSOT-23-8			5 çV	2.7 V	Current Sense	35 µA	20 V	2.5 mA	TSOT-23-8	1	1.1 MHz
Texas Instruments INA241A5IDDFR	Surface Mount		8 V/µs	-40 °C	125 °C	SOT-23-8 Thin TSOT-23-8			2 çV	2.7 V	Current Sense	35 µA	20 V	2.5 mA	TSOT-23-8	1	1.1 MHz

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	$ 3.05
		10	$ 2.74
		25	$ 2.59
		100	$ 2.25
		250	$ 2.13
		500	$ 1.91
		1000	$ 1.61
	Digi-Reel®	1	$ 3.05
		10	$ 2.74
		25	$ 2.59
		100	$ 2.25
		250	$ 2.13
		500	$ 1.91
		1000	$ 1.61
	Tape & Reel (TR)	3000	$ 1.53
		6000	$ 1.47
Texas Instruments	LARGE T&R	1	$ 2.30
		100	$ 2.02
		250	$ 1.42
		1000	$ 1.14

Description

General part information

INA241A Series

The INA241x is an ultra-precise, bidirectional current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –5V to 110V, independent of the supply voltage. The high-precision current measurement is achieved through a combination of low offset voltage (±10µV, maximum), small gain error (±0.01%, maximum) and a high DC CMRR (typical 166dB). The INA241x is designed for high voltage, bidirectional measurements in switching systems that see large common-mode voltage transients at the device inputs. The enhanced PWM rejection circuitry inside the INA241x provides minimal signal disturbance at the output due to the common-mode voltage transitions at the input.

The INA241x operates from a single 2.7V to 20V supply, drawing 2.5mA of supply current. The INA241x is available in five gain options: 10V/V, 20V/V, 50V/V, 100V/V, and 200V/V. Multiple gain options allow for optimization between available shunt resistor values and wide output dynamic range requirements.

The INA241x is specified over operating temperature range of −40°C to 125°C.