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INA241A2QDRQ1

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Texas Instruments Current Sense Amplifiers, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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INA241A2QDRQ1

Texas Instruments · Current Sense Amplifiers · SOIC-8

INA241A2QDRQ1 from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN- input Current-sense amplifier negative input; for high-side use connect to the load side of the sense resistor, and for low-side use connect to the ground side of the sense resistor. Common-mode input range is -5 V to 110 V.
2 GND power_in Device ground reference pin.
3 REF2 input Reference 2 voltage input, rated from 0 V to VS; it operates identically to REF1 and sets the output offset together with it.
4 NC unconnected Reserved pin that must be connected to ground.
5 OUT output Amplified output voltage of the current-sense amplifier.
6 VS power_in Power supply input, 2.7 V to 20 V.
7 REF1 input Reference 1 voltage input, rated from 0 V to VS; it operates identically to REF2 and sets the output offset together with it.
8 IN+ input Current-sense amplifier positive input; for high-side use connect to the bus-voltage side of the sense resistor, and for low-side use connect to the load side of the sense resistor. Common-mode input range is -5 V to 110 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Amplifiers/Comparators
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Common-mode input range (operating) VCM -5 48 110 V 4
Supply voltage (operating) VS 2.7 5 20 V 4
Ambient temperature (operating) TA -40 125 °C 4
Supply voltage absolute maximum VS 22 V 4
Differential input voltage (VIN+)-(VIN-) -30 30 V 4
Common-mode input voltage absolute VIN+, VIN- -20 120 V 4
Operating temperature absolute TA -55 150 °C 4
Junction temperature absolute TJ 150 °C 4
Storage temperature Tstg -65 150 °C 4
Common-mode input range VCM -5 110 V VIN+, VIN- = -5 V to 110 V, VSENSE = 0 mV, TA = -40°C to 125°C 5
CMRR, referred to input (INA241A-Q1) CMRR 150 166 dB VIN+, VIN- = -5 V to 110 V, VSENSE = 0 mV, TA = -40°C to 125°C, INA241A-Q1 5
Input offset voltage, referred to input Vos -15 3 15 µV VSENSE = 0 mV, INA241A2-Q1 5
Input offset voltage drift, referred to input dVos/dT -150 30 150 nV/°C TA = -40°C to 125°C, INA241A2-Q1 5
Power-supply rejection ratio, referred to input PSRR -0.75 0.1 0.75 µV/V VS = 2.7 V to 20 V, VSENSE = 0 mV, VREF1 = VREF2 = 1 V, TA = -40°C to 125°C, INA241A2-Q1 5
Input bias current IB 25 35 45 µA IB+, IB-, VSENSE = 0 mV 6
Gain error GERR -0.01 0.002 0.01 % (GND + 50 mV) < VOUT < (VS, 200 mV), INA241A1-Q1, INA241A2-Q1, INA241A3-Q1 6
Gain error drift GERR drift -1 0.05 1 ppm/°C TA = -40°C to +125°C, INA241A1-Q1, INA241A2-Q1, INA241A3-Q1 6
Maximum capacitive load CLOAD 1 nF No sustained oscillation, no isolation resistor 6
Output swing to GND 8 20 mV RL = 10 kΩ to GND, VSENSE = 0 mV, VREF1 = VREF2 = 0 V, TA = -40°C to +125°C 6
Reference input range 0 V 6
Gain (A2 device) G 20 V/V A2 device 5
Thermal resistance, junction-to-ambient (D, SOIC-8) RθJA 122.9 °C/W 4
Thermal resistance, junction-to-case top (D, SOIC-8) RθJC(top) 54.7 °C/W 4
Thermal resistance, junction-to-board (D, SOIC-8) RθJB 68.8 °C/W 4
Junction-to-top characterization (D, SOIC-8) ΨJT 12.2 °C/W 4
Junction-to-board characterization (D, SOIC-8) ΨJB 67.5 °C/W 4

CAD (KiCad official)

  • Symbol: INA241A2QDRQ1
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ina241a2qdrq1-etched.step / ina241a2qdrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina241a2qdrq1.step / ina241a2qdrq1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (49 pp, sha256 f47e70b46c6401e5, retrieved 2026-10-18, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF