# LM324A-SR

**3PEAK** · Operational Amplifier · SOIC-14

LM324A-SR from 3PEAK, in a SOIC-14. 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 | Output of amplifier A, which swings rail-to-rail. |
| 2 | -IN A | input | Inverting input of amplifier A; the input common-mode range extends to V- (ground). |
| 3 | +IN A | input | Non-inverting input of amplifier A; the input common-mode range extends to V- (ground). |
| 4 | +VS | power_in | Positive supply, specified from 3V to 36V (absolute maximum supply 40V). |
| 5 | +IN B | input | Non-inverting input of amplifier B; the input common-mode range extends to V- (ground). |
| 6 | -IN B | input | Inverting input of amplifier B; the input common-mode range extends to V- (ground). |
| 7 | OUT B | output | Output of amplifier B, which swings rail-to-rail. |
| 8 | OUT C | output | Output of amplifier C, which swings rail-to-rail. |
| 9 | -IN C | input | Inverting input of amplifier C; the input common-mode range extends to V- (ground). |
| 10 | +IN C | input | Non-inverting input of amplifier C; the input common-mode range extends to V- (ground). |
| 11 | -VS | power_in | Negative supply (V-), typically ground; the input common-mode range extends to this pin. |
| 12 | +IN D | input | Non-inverting input of amplifier D; the input common-mode range extends to V- (ground). |
| 13 | -IN D | input | Inverting input of amplifier D; the input common-mode range extends to V- (ground). |
| 14 | OUT D | output | Output of amplifier D, which swings rail-to-rail. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | 3PEAK |
| Package | SOIC-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `LM324A-SR`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `lm324a-sr-etched.step` / `lm324a-sr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm324a-sr.step` / `lm324a-sr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [3PEAK datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838804841361408) (16 pp, sha256 `59ea3dd35302185d`, retrieved 2026-10-09, tier: lcsc)
- **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](docs/lm324a-sr-datasheet.pdf)