# LMH6551MM

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

LMH6551MM 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 | -IN | input | Negative (inverting) input of the differential amplifier; the input current is limited to a maximum of 30 mA for pins 1, 2, 7 and 8. |
| 2 | VCM | input | Output common-mode voltage pin for the common-mode feedback amplifier; the maximum input current for this pin is 30 mA, and the VCM bypass capacitor can be removed (200 MHz common-mode small-signal bandwidth). |
| 3 | V+ | power_in | Positive supply; total supply voltage is 3 V to 12 V recommended, with a 13.2 V absolute maximum. |
| 4 | +OUT | output | Positive output of the differential amplifier; maximum output current is set by device power dissipation limits. |
| 5 | -OUT | output | Negative output of the differential amplifier; maximum output current is set by device power dissipation limits. |
| 6 | V- | power_in | Negative supply; total supply voltage is 3 V to 12 V recommended, with a 13.2 V absolute maximum across the supply. |
| 7 | NC | unconnected | No connection; the pin is not connected internally. |
| 8 | +IN | input | Positive (non-inverting) input of the differential amplifier; the input current is limited to a maximum of 30 mA for pins 1, 2, 7 and 8. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LMH6551MM`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lmh6551mm-etched.step` / `lmh6551mm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmh6551mm.step` / `lmh6551mm.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 2026-10-08, 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/lmh6551mm-datasheet.pdf)