# OPA705UA

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

OPA705UA 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; the pin is not connected to the amplifier circuit. |
| 2 | -In | input | Inverting input; the common-mode voltage range extends from (V-) - 0.3V to (V+) + 0.3V, and input signals more than 0.3V beyond the supply rails should be current-limited to 10mA or less. |
| 3 | +In | input | Non-inverting input; the common-mode voltage range extends from (V-) - 0.3V to (V+) + 0.3V, and input signals more than 0.3V beyond the supply rails should be current-limited to 10mA or less. |
| 4 | V- | power_in | Negative supply rail; the device is specified for dual supplies of ±2V to ±6V or single supply of 4V to 12V (V+ to V- total 13.2V absolute maximum). |
| 5 | NC | unconnected | No internal connection; the pin is not connected to the amplifier circuit. |
| 6 | Out | output | Amplifier output, which swings to within 40mV of the rail at light loads (>100kΩ) and is short-circuit protected to ground (continuous, one amplifier per package). |
| 7 | V+ | power_in | Positive supply rail; the device is specified for dual supplies of ±2V to ±6V or single supply of 4V to 12V (V+ to V- total 13.2V absolute maximum). |
| 8 | NC | unconnected | No internal connection; the pin is not connected to the amplifier circuit. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `OPA705UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `opa705ua-etched.step` / `opa705ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa705ua.step` / `opa705ua.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/opa705) (16 pp, sha256 `66b6da81d77e7901`, 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/opa705ua-datasheet.pdf)