# OPA1678IDRGR

**Texas Instruments** · Audio Amplifiers · WSON-8-EP(3x3)

OPA1678IDRGR from Texas Instruments, in a WSON-8-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 | OUT A | output | Channel A output with rail-to-rail output swing capability. |
| 2 | -IN A | input | Inverting input for channel A. |
| 3 | +IN A | input | Noninverting input for channel A. |
| 4 | V- | power_in | Negative power supply (lowest potential); operating supply voltage range ±2.25V to ±18V (dual supply) or 4.5V to 36V (single supply). |
| 5 | +IN B | input | Noninverting input for channel B. |
| 6 | -IN B | input | Inverting input for channel B. |
| 7 | OUT B | output | Channel B output with rail-to-rail output swing capability. |
| 8 | V+ | power_in | Positive power supply (highest potential); operating supply voltage range ±2.25V to ±18V (dual supply) or 4.5V to 36V (single supply). |
| 9 | Thermal Pad | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | WSON-8-EP(3x3) |
| Category | Amplifiers/Comparators |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `OPA1678IDRGR`
- Footprint: `Package_SON:WSON-8-1EP_3x3mm_P0.5mm_EP1.6x2.0mm`
- 3D model: WSON-8-EP(3x3) (KiCad packages3D, STEP)
- 3D model files: `opa1678idrgr-etched.step` / `opa1678idrgr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa1678idrgr.step` / `opa1678idrgr.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/opa1679) (59 pp, sha256 `52837fa87d2be841`, retrieved 2026-10-03, 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-4-5-20251001` (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/opa1678idrgr-datasheet.pdf)