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docs ina219aidcnr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
viewers ina219aidcnr: viewers · Ray 25d ago
ina219aidcnr-etched.fit.json ina219aidcnr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
ina219aidcnr-etched.glb ina219aidcnr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
ina219aidcnr-etched.step ina219aidcnr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
ina219aidcnr.glb Publish 0.1.0 · Ray 25d ago
ina219aidcnr.kicad_mod Publish 0.1.0 · Ray 25d ago
ina219aidcnr.kicad_sym Publish 0.1.0 · Ray 25d ago
ina219aidcnr.lbr Publish 0.1.0 · Ray 25d ago
ina219aidcnr.step Publish 0.1.0 · Ray 25d ago
package.json Publish 0.1.0 · Ray 25d ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 10d ago
README.md ina219aidcnr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 17d ago

INA219AIDCNR

Texas Instruments · Current Sense Amplifiers · SOT-23-8

INA219AIDCNR from Texas Instruments, in a SOT-23-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN+ input Positive differential shunt voltage input. Connect to the positive side of the external current-sense shunt resistor. Common-mode range 0 V to 26 V, differential range ±26 V (absolute max), input bias current ~20 uA in active mode.
2 IN- input Negative differential shunt voltage input. Connect to the negative side of the shunt resistor; bus voltage is measured from this pin to ground. Input impedance ~20 kOhm
3 GND power_in Device ground reference for the analog and digital circuitry.
4 VS power_in Power supply input, 3 V to 5.5 V (absolute max 6 V). Typical supply current ~1 mA.
5 SCL input I2C/SMBus serial clock input (open-drain, requires external pull-up). Logic thresholds: VIH >= 0.7VS, VIL <= 0.3VS.
6 SDA bidirectional I2C/SMBus serial data line (open-drain, requires external pull-up). Open-drain sink capability up to 10 mA.
7 A0 input I2C slave-address select pin 0. Tie to GND, VS, SDA, or SCL to encode 4 of the 16 programmable device addresses (see Table 1).
8 A1 input I2C slave-address select pin 1. Tie to GND, VS, SDA, or SCL together with A0 to program one of 16 device addresses (see Table 1).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-8
Category Amplifiers/Comparators
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • INA219AIDCNR
  • INA219AIDCNT
  • INA219AIDCNRIDR

CAD (KiCad official)

  • Symbol: INA219AIDCNR
  • Footprint: Package_TO_SOT_SMD:SOT-23-8
  • 3D model: SOT-23-8 (KiCad packages3D, STEP)
  • 3D model files: ina219aidcnr-etched.step / ina219aidcnr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ina219aidcnr.step / ina219aidcnr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (38 pp, sha256 2c973858ed829073, retrieved 2026-08-17, 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: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF