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INA331AIDGKR

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

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INA331AIDGKR

Texas Instruments · Instrumentation Amplifiers · VSSOP-8

INA331AIDGKR from Texas Instruments, in a VSSOP-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 RG passive External gain-setting resistor network connection where gain = 5 + 5(R2/R1).
2 VIN- power_in Negative differential input terminal protected against ±0.5V overshooting if current limited to 10mA.
3 VIN+ power_in Positive differential input terminal protected against ±0.5V overshooting if current limited to 10mA.
4 V- power_in Negative power supply rail and ground reference with maximum supply voltage 7.5V (V+ to V-).
5 REF input Reference voltage terminal setting output zero level; requires low-impedance source <160Ω and minimum 1.2V below V+.
6 VOUT output Rail-to-rail output voltage swinging within 25mV of supply rail for gains ≥10 with loads ≥10kΩ.
7 V+ power_in Positive power supply terminal for +2.7V to +5.5V operating range with 0.1µF bypass capacitor recommended.
8 Shutdown input Active-low shutdown control input pulling below 0.8V to enable low-power mode with quiescent current <1µA.

Key specifications

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

CAD (KiCad official)

  • Symbol: INA331AIDGKR
  • Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
  • 3D model: VSSOP-8 (KiCad packages3D, STEP)
  • 3D model files: ina331aidgkr-etched.step / ina331aidgkr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina331aidgkr.step / ina331aidgkr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (24 pp, sha256 b563b3023a3cb8c8, retrieved 2026-10-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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