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LM4990MMX

Public Made by Adom

by adom

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

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs lm4990mmx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
viewers lm4990mmx: viewers · Ray 9d ago
lm4990mmx-etched.fit.json lm4990mmx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
lm4990mmx-etched.glb lm4990mmx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
lm4990mmx-etched.step lm4990mmx: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 2d ago
lm4990mmx.glb Publish 0.1.0 · Ray 9d ago
lm4990mmx.kicad_mod Publish 0.1.0 · Ray 9d ago
lm4990mmx.kicad_sym Publish 0.1.0 · Ray 9d ago
lm4990mmx.lbr Publish 0.1.0 · Ray 9d ago
lm4990mmx.step Publish 0.1.0 · Ray 9d ago
package.json Publish 0.1.0 · Ray 9d ago
page.json Set visibility: public · Ray 9d ago
README.md Initial commit: component/lm4990mmx · Ray 9d ago

LM4990MMX

Texas Instruments · Global Sourcing Parts · VSSOP-8

LM4990MMX 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 SHUTDOWN input Active-low shutdown control input; pulling low (same state as internally-tied GND SD MODE) enters ultra-low-power shutdown; ISD = 0.1 µA typ, 2.0 µA max.
2 BYPASS passive Half-supply voltage bypass pin; connect a 1.0 µF capacitor to GND here to set the internal mid-supply reference and minimize turn-on pop.
3 +IN input Non-inverting audio signal input to amplifier 1; input voltage range −0.3 V to VDD + 0.3 V; input impedance set by external Ri.
4 -IN input Inverting audio signal input to amplifier 1; closed-loop gain set by external Rf/Ri ratio; AVD = 2×(Rf/Ri).
5 VO1 output BTL output of amplifier 1 (externally gain-configurable); biased at VDD/2 quiescent; drives one end of the speaker load; 1.25 W typ into 8 Ω at 5 V, 1% THD+N.
6 VDD power_in Positive supply voltage; operating range 2.2 V to 5.5 V; absolute maximum 6.0 V; decouple with 10 µF bulk and local ceramic capacitor as close as possible to pin.
7 GND power_in Ground reference for all internal circuitry; θJA = 190 °C/W for the VSSOP package; all voltages measured with respect to this pin.
8 VO2 output BTL output of amplifier 2 (internally fixed unity-gain inverting); 180° out of phase with VO1; biased at VDD/2 quiescent; completes the differential bridge drive.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-8
Category Global Sourcing Parts
Pins 8

CAD (KiCad official)

  • Symbol: LM4990MMX
  • Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
  • 3D model: VSSOP-8 (KiCad packages3D, STEP)
  • 3D model files: lm4990mmx-etched.step / lm4990mmx-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4990mmx.step / lm4990mmx.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (30 pp, sha256 99609ebc1689ea83, retrieved 2026-09-26, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-sonnet-4-6 (text+vision), consensus claude-opus-4-7 (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