# DAC8551AQDGKRQ1

**Texas Instruments** · Digital To Analog Converters (DAC) · VSSOP-8-0.65mm

DAC8551AQDGKRQ1 from Texas Instruments, in a VSSOP-8-0.65mm. 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 | VDD | power_in | Power supply input, specified from 3.2 V to 5.5 V (supply voltage VDD to GND). |
| 2 | VREF | power_in | Reference voltage input, with the reference input voltage range stated as 0 to VDD V. |
| 3 | VFB | input | Feedback connection for the output amplifier; for voltage output operation it must be tied to VOUT externally. |
| 4 | VOUT | output | Analog output voltage from the DAC, with the output amplifier operating rail-to-rail. |
| 5 | SYNC | input | Level-triggered active-low frame synchronization input that enables the input shift register; the DAC updates after the 24th clock unless SYNC goes high first, and it is a Schmitt-trigger logic input. |
| 6 | SCLK | input | Serial clock input for data transfer at rates up to 30 MHz, and it is a Schmitt-trigger logic input. |
| 7 | DIN | input | Serial data input, clocked into the 24-bit input shift register on each falling edge of SCLK, and it is a Schmitt-trigger logic input. |
| 8 | GND | power_in | Ground reference point for all circuitry on the device. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Data Acquisition |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `DAC8551AQDGKRQ1`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files: `dac8551aqdgkrq1-etched.step` / `dac8551aqdgkrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dac8551aqdgkrq1.step` / `dac8551aqdgkrq1.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/dac8551-q1) (29 pp, sha256 `45b38a7724188ee7`, retrieved 2026-10-11, 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/dac8551aqdgkrq1-datasheet.pdf)