# LM4880MX

**Texas Instruments** · Audio Amplifiers · SOIC-8

LM4880MX 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 | OUT A | output | Channel A amplifier output, AC-coupled to the load through output coupling capacitor Co. |
| 2 | IN A | input | Channel A inverting input, with gain set by Ri and RF and coupled through input capacitor Ci. |
| 3 | BYPASS | passive | Half-supply bypass pin that takes capacitor CB (1.0 µF or larger recommended) for PSRR and turn-on click and pop performance. |
| 4 | GND | power_in | Ground pin, the reference for all voltages. |
| 5 | SHUTDOWN | input | Shutdown control: a logic high (trigger point typically half supply) turns the amplifier off, and the pin must be tied to a definite voltage, not left floating. |
| 6 | IN B | input | Channel B inverting input, with gain set by Ri and RF and coupled through input capacitor Ci. |
| 7 | OUT B | output | Channel B amplifier output, AC-coupled to the load through output coupling capacitor Co. |
| 8 | VDD | power_in | Positive supply, 2.7V to 5.5V operating (6.0V absolute maximum), with a supply bypass capacitor placed close to the pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `LM4880MX`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lm4880mx-etched.step` / `lm4880mx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4880mx.step` / `lm4880mx.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm4880) (24 pp, sha256 `fc1f6c7bace365d5`, retrieved 2026-10-10, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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](docs/lm4880mx-datasheet.pdf)