# ADS7823E

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

ADS7823E 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 | VREF | power_in | Reference input, 2.5V nominal; the reference may range from 50mV to VDD and sets the analog input range (0 to VREF). |
| 2 | AIN | input | Analog input sampled by the internal sample-and-hold, with a full-scale input range of 0 to VREF and about 25pF input capacitance. |
| 3 | A0 | input | Slave address bit 0; tie to VDD or digital ground, since the level at power-up sets device address bit A0. |
| 4 | GND | power_in | Ground reference; connect to a clean ground point, ideally a dedicated analog ground plane away from microcontroller ground. |
| 5 | A1 | input | Slave address bit 1; tie to VDD or digital ground, since the level at power-up sets device address bit A1. |
| 6 | SDA | bidirectional | I2C serial data line (open-drain); VIH min is 0.7 x VDD, VIL max is 0.3 x VDD, and VOL max is 0.4V at 3mA sink current. |
| 7 | SCL | input | I2C serial clock input (open-drain bus line) supporting standard (100kHz), fast (400kHz) and high-speed (3.4MHz) modes. |
| 8 | +VDD | power_in | Power supply, 3.3V nominal in the pin table; specified performance is 2.7V to 3.6V, and the 5V characterization uses 4.75V to 5.25V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `ADS7823E`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `ads7823e-etched.step` / `ads7823e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads7823e.step` / `ads7823e.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/ads7823) (18 pp, sha256 `36454ca55d2eba31`, 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/ads7823e-datasheet.pdf)