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Contents

README

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INA2181A2IDGST

Texas Instruments · Current Sense Amplifiers · VSSOP-10-0.5mm

INA2181A2IDGST from Texas Instruments, in a VSSOP-10-0.5mm. 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 OUT1 output Channel 1 output voltage.
2 IN-1 input Channel 1 current sense amplifier negative input; connect to load side of sense resistor for high-side sensing or to ground side of sense resistor for low-side sensing.
3 IN+1 input Channel 1 current sense amplifier positive input; connect to bus voltage side of sense resistor for high-side sensing or to load side of sense resistor for low-side sensing.
4 GND power_in Analog ground.
5 REF1 input Channel 1 reference voltage input, 0 to VS.
6 REF2 input Channel 2 reference voltage input, 0 to VS.
7 IN+2 input Channel 2 current sense amplifier positive input; connect to bus voltage side of sense resistor for high-side sensing or to load side of sense resistor for low-side sensing.
8 IN-2 input Channel 2 current sense amplifier negative input; connect to load side of sense resistor for high-side sensing or to ground side of sense resistor for low-side sensing.
9 OUT2 output Channel 2 output voltage.
10 VS power_in Power supply pin, 2.7V to 5.5V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-10-0.5mm
Category Amplifiers/Comparators
Pins 10

CAD (KiCad official)

  • Symbol: INA2181A2IDGST
  • Footprint: Package_SO:MSOP-10_3x3mm_P0.5mm
  • 3D model: VSSOP-10-0.5mm (KiCad packages3D, STEP)
  • 3D model files: ina2181a2idgst-etched.step / ina2181a2idgst-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina2181a2idgst.step / ina2181a2idgst.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (62 pp, sha256 16077f586e92eff4, retrieved 2026-10-03, 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-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