# REF5045AQDRQ1

**Texas Instruments** · Voltage Reference · SOIC-8

REF5045AQDRQ1 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 | DNC | unconnected | Do not connect; do not use this pin. |
| 2 | VIN | power_in | Input supply voltage; must be at least VOUT + 0.2 V (2.7 V minimum for VOUT ≤ 2.5 V) and no more than 18 V. |
| 3 | TEMP | output | Temperature-dependent voltage output with approximately 60-kΩ source impedance, accurate to roughly ±15°C, and it must be buffered when loaded with low impedance. |
| 4 | GND | power_in | Ground reference for the device. |
| 5 | TRIM/NR | input | Trim and noise reduction pin giving a ±15-mV adjustment of VOUT; a capacitor to GND with the internal 1-kΩ resistor forms a low-pass noise filter (1 µF suggested, 14.5 Hz corner). |
| 6 | VOUT | power_out | Reference voltage output, 4.5 V for the REF5045, rated for ±10 mA output current. |
| 7 | NC | unconnected | No internal connection; do not use this pin. |
| 8 | DNC | unconnected | Do not connect; do not use this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `REF5045AQDRQ1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ref5045aqdrq1-etched.step` / `ref5045aqdrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ref5045aqdrq1.step` / `ref5045aqdrq1.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/ref5025a-q1) (26 pp, sha256 `908e1bb3275e2398`, 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/ref5045aqdrq1-datasheet.pdf)