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INA241A-Q1

ACTIVE

AEC-Q100, -4V to 110V bidirectional ultraprecise current sense amplifier with enhanced PWM rejection

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Data sheet

INA241A-Q1

ACTIVE
Data sheet Order now

Product details

Product type Analog output Common-mode voltage (max) (V) 110 Common-mode voltage (min) (V) -5 Input offset (±) (max) (µV) 8, 10, 15, 20 Input offset drift (±) (typ) (µV/°C) 0.05, 0.1 Features Bidirectional, Enhanced PWM Rejection, Low-side Capable, Ultra precise Rating Automotive Voltage gain (V/V) 10, 20, 50, 100, 200 CMRR (min) (dB) 150 Bandwidth (kHz) 1100 Supply voltage (max) (V) 20 Supply voltage (min) (V) 2.7 Iq (max) (mA) 3.2 Number of channels 1 Comparators (#) 0 Gain error (%) 0.01, 0.015 Gain error drift (±) (max) (ppm/°C) 1 Slew rate (V/µs) 5 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 110 Common-mode voltage (min) (V) -5 Input offset (±) (max) (µV) 8, 10, 15, 20 Input offset drift (±) (typ) (µV/°C) 0.05, 0.1 Features Bidirectional, Enhanced PWM Rejection, Low-side Capable, Ultra precise Rating Automotive Voltage gain (V/V) 10, 20, 50, 100, 200 CMRR (min) (dB) 150 Bandwidth (kHz) 1100 Supply voltage (max) (V) 20 Supply voltage (min) (V) 2.7 Iq (max) (mA) 3.2 Number of channels 1 Comparators (#) 0 Gain error (%) 0.01, 0.015 Gain error drift (±) (max) (ppm/°C) 1 Slew rate (V/µs) 5 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23-THN (DDF) 8 8.12 mm² 2.9 x 2.8 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • AEC-Q100 qualified for automotive applications:
    • Temperature Grade 1: −40°C to 125°C, TA
    • Temperature Grade 0: −40°C to 150°C, TA
  • Functional Safety-Capable
  • Enhanced PWM rejection optimized for systems subject to switching common-mode voltages
    • Supports switching frequencies up to 125kHz
  • Wide common-mode voltage:
    • Operational voltage: −5V to 110V
    • Survival voltage: −20V to 120V
  • Bidirectional operation
  • High small signal bandwidth: 1.1MHz (at all gains)
  • Slew rate: 8V/µs
  • Step response settling time to 1%: 1µs
  • Excellent CMRR
    • 166dB DC-CMRR
    • 104dB AC-CMRR at 100kHz
    • 89dB AC-CMRR at 1MHz
  • Accuracy:
    • Gain error (maximum)
      • Version A: ±0.01%, ±1ppm/°C drift
      • Version B: ±0.1%, ±5ppm/°C drift
    • Offset voltage (maximum)
      • Version A: ±10µV, ±0.1µV/°C drift
      • Version B: ±150µV, ±0.5µV/°C drift
  • Available gains:
    • INA241A1-Q1 : 10V/V
    • INA241A2-Q1 : 20V/V
    • INA241A3-Q1 : 50V/V
    • INA241A4-Q1 : 100V/V
    • INA241A5-Q1 : 200V/V
  • Package options: SOT23-8, VSSOP-8, SOIC-8, VSSOP-10
  • AEC-Q100 qualified for automotive applications:
    • Temperature Grade 1: −40°C to 125°C, TA
    • Temperature Grade 0: −40°C to 150°C, TA
  • Functional Safety-Capable
  • Enhanced PWM rejection optimized for systems subject to switching common-mode voltages
    • Supports switching frequencies up to 125kHz
  • Wide common-mode voltage:
    • Operational voltage: −5V to 110V
    • Survival voltage: −20V to 120V
  • Bidirectional operation
  • High small signal bandwidth: 1.1MHz (at all gains)
  • Slew rate: 8V/µs
  • Step response settling time to 1%: 1µs
  • Excellent CMRR
    • 166dB DC-CMRR
    • 104dB AC-CMRR at 100kHz
    • 89dB AC-CMRR at 1MHz
  • Accuracy:
    • Gain error (maximum)
      • Version A: ±0.01%, ±1ppm/°C drift
      • Version B: ±0.1%, ±5ppm/°C drift
    • Offset voltage (maximum)
      • Version A: ±10µV, ±0.1µV/°C drift
      • Version B: ±150µV, ±0.5µV/°C drift
  • Available gains:
    • INA241A1-Q1 : 10V/V
    • INA241A2-Q1 : 20V/V
    • INA241A3-Q1 : 50V/V
    • INA241A4-Q1 : 100V/V
    • INA241A5-Q1 : 200V/V
  • Package options: SOT23-8, VSSOP-8, SOIC-8, VSSOP-10

The INA241x-Q1 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-Q1 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-Q1 provides minimal signal disturbance at the output due to the common-mode voltage transitions at the input.

The INA241x-Q1 operates from a supply of 2.7V to 20V, drawing 2.5mA of supply current. The INA241x-Q1 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-Q1Grade 1 is specified over operating temperature range of −40°C to 125°C and Grade 0 over operating temperature range of −40°C to 150°C.

The INA241x-Q1 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-Q1 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-Q1 provides minimal signal disturbance at the output due to the common-mode voltage transitions at the input.

The INA241x-Q1 operates from a supply of 2.7V to 20V, drawing 2.5mA of supply current. The INA241x-Q1 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-Q1Grade 1 is specified over operating temperature range of −40°C to 125°C and Grade 0 over operating temperature range of −40°C to 150°C.
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Technical documentation

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* Data sheet INA241x-Q1 AEC-Q100, –5V to 110V, Bidirectional, Ultra-Precise Current Sense Amplifier With Enhanced PWM Rejection datasheet (Rev. D) PDF | HTML 09 Jun 2025
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 Nov 2024
Functional safety information INA241x-Q1 and INA296x-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 29 Jan 2024
Analog Design Journal Second-sourcing options for small-package amplifiers 26 Mar 2018

Design & development

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Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
SOT-23-THN (DDF) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian
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