# LMH6551MA

**Texas Instruments** · Operational Amplifier · SOIC-8

LMH6551MA 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 | -IN | input | Negative input; maximum input current 30 mA, common-mode input voltage range ±Vs V. |
| 2 | VCM | input | Output common-mode voltage input for common-mode feedback amplifier; maximum input current 30 mA. |
| 3 | V+ | power_in | Positive supply voltage; recommended operating range 3 to 12 V total supply voltage; absolute maximum 13.2 V. |
| 4 | +OUT | output | Positive output; maximum output current determined by device power dissipation limitations. |
| 5 | -OUT | output | Negative output; maximum output current determined by device power dissipation limitations. |
| 6 | V- | power_in | Negative supply voltage; recommended operating range 3 to 12 V total supply voltage. |
| 7 | NC | unconnected | No connection; leave unconnected. |
| 8 | +IN | input | Positive input; maximum input current 30 mA, common-mode input voltage range ±Vs V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LMH6551MA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lmh6551ma-etched.step` / `lmh6551ma-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmh6551ma.step` / `lmh6551ma.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/lmh6551) (36 pp, sha256 `876522576991cfe3`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/lmh6551ma-datasheet.pdf)