# LMP91051MT

**Texas Instruments** · Analog Front End (AFE) · TSSOP-14

LMP91051MT from Texas Instruments, in a TSSOP-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 | IN1 | input | Analog signal input for channel 1 of the dual-channel programmable gain amplifier. |
| 2 | IN2 | input | Analog signal input for channel 2 of the dual-channel programmable gain amplifier. |
| 3 | CMOUT | output | Analog common mode voltage output, which is set to 1.15 V or 2.59 V by the common mode generator. |
| 4 | A0 | output | First stage output, used for external filtering (high pass, low pass or band pass) to remove out-of-band noise. |
| 5 | A1 | input | Second stage input, used for external filtering (high pass, low pass or band pass) to remove out-of-band noise. |
| 6 | GND | power_in | Power ground. |
| 7 | NC | unconnected | No connect. |
| 8 | NC | unconnected | No connect. |
| 9 | OUT | output | Signal output, referenced to the same potential as CMOUT. |
| 10 | CSB | input | Digital chip select input, active low. |
| 11 | SCLK | input | Digital SPI interface clock input. |
| 12 | SDIO | bidirectional | Digital serial data input/output for the SPI interface. |
| 13 | VIO | power_in | Digital input/output supply, specified from 2.7 V to 5.5 V. |
| 14 | VDD | power_in | Positive analog supply, specified from 2.7 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Data Acquisition |
| Pins | 14 |

## CAD (KiCad official)

- Symbol: `LMP91051MT`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `lmp91051mt-etched.step` / `lmp91051mt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmp91051mt.step` / `lmp91051mt.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/lmp91051) (28 pp, sha256 `ab33985fb9671ec4`, retrieved 2026-10-11, 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/lmp91051mt-datasheet.pdf)