# ADS7951SBRGER

**Texas Instruments** · Analog To Digital Converters (ADC) · VQFN-24-EP(4x4)

ADS7951SBRGER from Texas Instruments, in a VQFN-24-EP(4x4). 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 | +VA | power_in | Analog power supply, 2.7 V to 5.25 V. |
| 2 | AGND | power_in | Analog ground. |
| 3 | MXO | output | Analog multiplexer output. |
| 4 | AINP | input | ADC input signal (analog input). |
| 5 | AINM | input | ADC input ground (analog input). |
| 6 | CH7 | input | Analog-input channel 7 for the multiplexer. |
| 7 | CH6 | input | Analog-input channel 6 for the multiplexer. |
| 8 | CH5 | input | Analog-input channel 5 for the multiplexer. |
| 9 | CH4 | input | Analog-input channel 4 for the multiplexer. |
| 10 | CH3 | input | Analog-input channel 3 for the multiplexer. |
| 11 | CH2 | input | Analog-input channel 2 for the multiplexer. |
| 12 | CH1 | input | Analog-input channel 1 for the multiplexer. |
| 13 | CH0 | input | Analog-input channel 0 for the multiplexer. |
| 14 | +VA | power_in | Analog power supply, 2.7 V to 5.25 V. |
| 15 | AGND | power_in | Analog ground. |
| 16 | CS | input | Chip-select input pin; active low. |
| 17 | SCLK | input | Serial clock input pin. |
| 18 | SDI | input | Serial data input pin. |
| 19 | SDO | output | Serial data output pin. |
| 20 | BDGND | power_in | Digital ground. |
| 21 | +VBD | power_in | Digital I/O supply, 1.7 V to +VA. |
| 22 | GPIO0 | bidirectional | General-purpose input or output with programmable dual function as an active-high alarm output. |
| 23 | REFM | input | Reference ground. |
| 24 | REFP | input | Reference input; 2.5 V reference with a 10 µF decoupling capacitor to REFM. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-24-EP(4x4) |
| Category | Data Acquisition |
| Pins | 25 |

## CAD (KiCad official)

- Symbol: `ADS7951SBRGER`
- Footprint: `Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm`
- 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files: `ads7951sbrger-etched.step` / `ads7951sbrger-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads7951sbrger.step` / `ads7951sbrger.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/ads7955) (87 pp, sha256 `8ef9ce324ee60500`, retrieved 2026-10-07, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/ads7951sbrger-datasheet.pdf)