# ADS7854IRTER

**Texas Instruments** · Analog To Digital Converters (ADC) · WQFN-16-EP(3x3)

ADS7854IRTER from Texas Instruments, in a WQFN-16-EP(3x3). 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 | REFIO_A | bidirectional | Reference voltage input/output for channel A, referenced to REFGND_A and limited to -0.3 V to AVDD + 0.3 V with respect to REFGND_x. |
| 2 | REFGND_A | power_in | Reference ground potential for channel A, which must stay within 0.3 V of GND (|REFGND_x - GND| 0.3 V limit). |
| 3 | REFGND_B | power_in | Reference ground potential for channel B, which must stay within 0.3 V of GND (|REFGND_x - GND| 0.3 V limit). |
| 4 | REFIO_B | bidirectional | Reference voltage input/output for channel B, referenced to REFGND_B and limited to -0.3 V to AVDD + 0.3 V with respect to REFGND_x. |
| 5 | AINM_B | input | Negative analog input for channel B, limited to -0.3 V to AVDD + 0.3 V with respect to REFGND_x; supports fully-differential input. |
| 6 | AINP_B | input | Positive analog input for channel B, limited to -0.3 V to AVDD + 0.3 V with respect to REFGND_x; supports fully-differential input. |
| 7 | DVDD | power_in | Digital I/O supply, specified at 3.3 V nominal, with absolute maximum of 6 V to GND. |
| 8 | SDI | input | Data input for serial communication; digital input voltage limited to GND - 0.3 V to DVDD + 0.3 V. |
| 9 | CS | input | Chip-select signal, active low, which brings the serial data bus out of 3-state when it falls. |
| 10 | SCLK | input | Clock for serial communication, with digital input voltage limited to GND - 0.3 V to DVDD + 0.3 V. |
| 11 | SDO_A | output | Data output for serial communication for channel A and channel B; in dual-SDO modes it carries the ADC_A conversion result. |
| 12 | SDO_B | output | Data output for serial communication for channel B; it stays in 3-state in single-SDO mode and can be left unconnected. |
| 13 | GND | power_in | Digital ground, the reference for the digital input and DVDD voltage limits. |
| 14 | AVDD | power_in | Analog supply voltage for ADC operation, specified at 5 V nominal, with absolute maximum of 6 V to REFGND_x. |
| 15 | AINP_A | input | Positive analog input for channel A, limited to -0.3 V to AVDD + 0.3 V with respect to REFGND_x; supports fully-differential input. |
| 16 | AINM_A | input | Negative analog input for channel A, limited to -0.3 V to AVDD + 0.3 V with respect to REFGND_x; supports fully-differential input. |
| 17 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WQFN-16-EP(3x3) |
| Category | Data Acquisition |
| Pins | 17 |

## CAD (KiCad official)

- Symbol: `ADS7854IRTER`
- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`
- 3D model: WQFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `ads7854irter-etched.step` / `ads7854irter-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ads7854irter.step` / `ads7854irter.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/ads8354) (74 pp, sha256 `9dc9513f58274162`, retrieved 2026-10-12, 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-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/ads7854irter-datasheet.pdf)