component

TPA311DR

Public Made by Adom

by adom

Texas Instruments Audio Power OpAmps, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentoperational amplifier-comparatortpa311drfactory-2.0.0extractor-text

Verified TPA311DR

by Ray · last 2 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

2 Nov 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TPA311DR · SOIC-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 42-page datasheet
  • ✓distributor: lcsc C2861930, digikey 296-1947-2-ND, mouser 595-TPA311DR
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-2zs6u7_t/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tpa311dr.kicad_sym✓ tpa311dr.kicad_mod✓ tpa311dr.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 4d ago
viewers tpa311dr: viewers · Ray 4d ago
package.json Publish 0.1.0 · Ray 4d ago
page.json Set visibility: public · Ray 4d ago
README.md Publish 0.1.0 · Ray 4d ago
tpa311dr-etched.glb Publish 0.1.0 · Ray 4d ago
tpa311dr-etched.step tpa311dr: factory component page (tier=mfr) · Ray 4d ago
tpa311dr-hero.glb tpa311dr: hero GLB from the etched model (keeps the MPN mark) · Ray 4d ago
tpa311dr-hero.overlay.json Publish 0.1.0 · Ray 4d ago
tpa311dr.glb Publish 0.1.0 · Ray 4d ago
tpa311dr.kicad_mod Publish 0.1.0 · Ray 4d ago
tpa311dr.kicad_sym Publish 0.1.0 · Ray 4d ago
tpa311dr.lbr Publish 0.1.0 · Ray 4d ago
tpa311dr.step Publish 0.1.0 · Ray 4d ago
verification.json Verified: Published by the parts factory: tier mfr, 8 pins · Ray 4d ago

TPA311DR

Texas Instruments · Audio Power OpAmps · SOIC-8

TPA311DR 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 SHUTDOWN input SHUTDOWN places the entire device in shutdown mode when held high (IDD = 60 µA, VDD = 5 V).
2 BYPASS passive BYPASS is the tap to the voltage divider for internal mid-supply bias and should be connected to a 0.1-µF to 1-µF capacitor when used as an audio amplifier.
3 SE/BTL input When SE/BTL is held low the TPA311 is in BTL mode, and when held high it is in SE mode.
4 IN input IN is the audio input terminal.
5 VO+ output VO+ is the positive output for BTL and SE modes.
6 VDD power_in VDD is the supply voltage terminal, specified from 2.5 V to 5.5 V.
7 GND power_in GND is the ground connection.
8 VO- output VO- is the negative output in BTL mode and a high-impedance output in SE mode.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category Operational Amplifier/Comparator
Pins 8

CAD (KiCad official)

  • Symbol: TPA311DR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: tpa311dr-etched.step / tpa311dr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpa311dr.step / tpa311dr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (42 pp, sha256 4816e4b36e799d10, retrieved 2026-11-02, tier: manufacturer)
  • 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