# ADS7822UC

**Texas Instruments** · Analog To Digital Converters (ADC) · SOIC-8

ADS7822UC 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 | VREF | power_in | Reference input; the reference voltage can be set to any level from 50 mV up to VCC. |
| 2 | +In | input | Noninverting analog input; the absolute input range is -0.2 V to VCC + 0.2 V relative to GND. |
| 3 | -In | input | Inverting analog input; connect to ground or to a remote ground sense point, with an absolute input range of -0.2 V to +1.0 V relative to GND. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | CS/SHDN | input | Chip select when low; shutdown mode when high. |
| 6 | DOUT | output | Serial output data word of 12 bits, valid on the falling edge of DCLOCK; the output is enabled by the second clock pulse after CS falls, followed by one null bit. |
| 7 | DCLOCK | input | Data clock that synchronizes the serial data transfer and determines the conversion speed. |
| 8 | +VCC | power_in | Power supply; specified at 2.7 V to 3.6 V and 4.75 V to 5.25 V, with an absolute maximum of +6 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Data Acquisition |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `ADS7822UC`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ads7822uc-etched.step` / `ads7822uc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads7822uc.step` / `ads7822uc.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/ads7822) (31 pp, sha256 `889c901a1116a5b2`, 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/ads7822uc-datasheet.pdf)