# REF1925AIDDCT

**Texas Instruments** · Voltage Reference · SOT-23-5

REF1925AIDDCT from Texas Instruments, in a SOT-23-5. 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 | VBIAS | output | Bias voltage output at VREF / 2 for biasing bipolar input signals. |
| 2 | GND | power_in | Ground reference pin for the device. |
| 3 | EN | input | Enable input; the device is enabled when EN is at or above VIN - 0.7 V, with absolute maximum range -0.3 V to VIN + 0.3 V. |
| 4 | VIN | power_in | Input supply voltage; recommended range is VREF + 0.02 V to 5.5 V with absolute maximum of 6 V. |
| 5 | VREF | power_in | Reference voltage output (VREF) for the ADC input range. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `REF1925AIDDCT`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `ref1925aiddct-etched.step` / `ref1925aiddct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref1925aiddct.step` / `ref1925aiddct.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/lit/ds/symlink/ref19.pdf) (35 pp, sha256 `010e1079078fa7c5`, retrieved 2026-11-05, tier: manufacturer)
- **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/ref1925aiddct-datasheet.pdf)