# OPA704UA

**Texas Instruments** · Operational Amplifier · SOIC-8

OPA704UA 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 | NC | unconnected | No internal connection. |
| 2 | -In | input | Inverting input of the amplifier; input range extends 0.3V beyond the supply rails, with input current limited to 10mA if signals swing further. |
| 3 | +In | input | Non-inverting input of the amplifier; input range extends 0.3V beyond the supply rails, with input current limited to 10mA if signals swing further. |
| 4 | V- | power_in | Negative supply (ground in single-supply use); supply range V+ to V- is 4V to 12V specified, 13.2V absolute maximum. |
| 5 | NC | unconnected | No internal connection. |
| 6 | Out | output | Amplifier output with rail-to-rail swing to within 40mV of the rail, short-circuit current of ±40mA. |
| 7 | V+ | power_in | Positive supply; supply range V+ to V- is 4V to 12V specified, 13.2V absolute maximum. |
| 8 | NC | unconnected | No internal connection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `OPA704UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `opa704ua-etched.step` / `opa704ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa704ua.step` / `opa704ua.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/opa703) (37 pp, sha256 `99e4c54a94dcab23`, retrieved 2026-10-05, tier: lcsc)
- **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/opa704ua-datasheet.pdf)