# ADS7822EC

**Texas Instruments** · Analog To Digital Converters (ADCs) · MSOP-8

ADS7822EC from Texas Instruments, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VREF | input | Reference input. Sets the ADC full-scale range; may be driven from 50mV up to VCC. |
| 2 | +In | input | Noninverting analog input to the pseudo-differential sample-and-hold. Absolute range -0.2V to VCC+0.2V. |
| 3 | -In | input | Inverting analog input. Connect to ground or to a remote ground sense point; absolute range -0.2V to +1.0V above GND. |
| 4 | GND | power_in | Ground return for both analog and digital supply currents. |
| 5 | CS/SHDN | input | Active-low chip select and shutdown control. Low enables conversion and serial output; high places the device in power-down mode (<3µA typical). |
| 6 | DOUT | output | Serial data output (MISO). 12-bit conversion word clocked out MSB-first on the falling edge of DCLOCK after CS falls; data valid for the next edge after one null bit. |
| 7 | DCLOCK | input | External serial data clock (SCLK). Synchronizes the serial data transfer and determines the conversion speed; fCLK = 16 x fSAMPLE. |
| 8 | +VCC | power_in | Positive supply input, 2.7V to 5.25V (operational from 2.0V). Bypass to GND with a local decoupling capacitor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | MSOP-8 |
| Category | ADC/DAC/Data Conversion |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `ADS7822EC/250`
- `ADS7822EC/2K5`
- `ADS7822UC`
- `ADS7822UC/2K5`
- `ADS7822PC`

## CAD (KiCad official)

- Symbol: `ADS7822EC`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `ads7822ec-etched.step` / `ads7822ec-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads7822ec.step` / `ads7822ec.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 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/ads7822ec-datasheet.pdf)