component
INA129U
Public Made by Adomby adom
Texas Instruments Instrumentation OpAmps, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownINA129U
Texas Instruments · Instrumentation OpAmps · SOIC-8
INA129U 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 | RG | passive | Gain setting pin; connect external resistor between pins 1 and 8 for gain greater than 1. |
| 2 | VIN- | power_in | Negative input; ±40V overvoltage protected. |
| 3 | VIN+ | power_in | Positive input; ±40V overvoltage protected. |
| 4 | V- | power_in | Negative power supply; ±2.25V to ±18V dual supply range. |
| 5 | REF | input | Reference input; must be driven by low impedance source or grounded. |
| 6 | VO | output | Output; VO = G × (VIN+ - VIN-) + VREF. |
| 7 | V+ | power_in | Positive power supply; ±2.25V to ±18V dual supply range. |
| 8 | RG | passive | Gain setting pin; connect external resistor between pins 1 and 8 for gain greater than 1. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Operational Amplifier/Comparator |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
INA129U - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ina129u-etched.step/ina129u-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ina129u.step/ina129u.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (42 pp, sha256
190884220b677d89, retrieved 2026-10-06, 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).