INA241A Series

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

Catalog

-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

Catalog

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

Key Features

• Enhanced PWM rejection optimized for systems subject to switching common-mode voltagesSupports switching frequencies up to 125kHzWide common-mode voltage:Operational voltage: −5V to 110VSurvival voltage: −20V to 120VBidirectional operationHigh small signal bandwidth: 1.1MHz (at all gains)Slew rate: 8V/µsStep response settling time to 1%: 1µsExcellent CMRR166dB DC-CMRR104dB AC-CMRR at 100kHz89dB AC-CMRR at 1MHzAccuracy:Gain error (maximum)Version A: ±0.01%, ±1ppm/°C driftVersion B: ±0.1%, ±5ppm/°C driftOffset voltage (maximum)Version A: ±10µV, ±0.1µV/°C driftVersion B: ±150µV, ±0.5µV/°C driftAvailable gains:INA241A1, INA241B1 : 10V/VINA241A2, INA241B2 : 20V/VINA241A3, INA241B3 : 50V/VINA241A4, INA241B4 : 100V/VINA241A5, INA241B5 : 200V/VPackage options: SOT23-8, VSSOP-8, SOIC-8,Enhanced PWM rejection optimized for systems subject to switching common-mode voltagesSupports switching frequencies up to 125kHzWide common-mode voltage:Operational voltage: −5V to 110VSurvival voltage: −20V to 120VBidirectional operationHigh small signal bandwidth: 1.1MHz (at all gains)Slew rate: 8V/µsStep response settling time to 1%: 1µsExcellent CMRR166dB DC-CMRR104dB AC-CMRR at 100kHz89dB AC-CMRR at 1MHzAccuracy:Gain error (maximum)Version A: ±0.01%, ±1ppm/°C driftVersion B: ±0.1%, ±5ppm/°C driftOffset voltage (maximum)Version A: ±10µV, ±0.1µV/°C driftVersion B: ±150µV, ±0.5µV/°C driftAvailable gains:INA241A1, INA241B1 : 10V/VINA241A2, INA241B2 : 20V/VINA241A3, INA241B3 : 50V/VINA241A4, INA241B4 : 100V/VINA241A5, INA241B5 : 200V/VPackage options: SOT23-8, VSSOP-8, SOIC-8,

Description

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. 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.