# OPA2349UA

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

OPA2349UA from Texas Instruments, in a SOP-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 | Out A | output | Output of amplifier A, which swings to within 350mV of the rails with a 10kΩ load and supplies up to ±8mA output current. |
| 2 | -In A | input | Inverting input of amplifier A, whose common-mode voltage range extends 200mV beyond the supply rails. |
| 3 | +In A | input | Non-inverting input of amplifier A, whose common-mode voltage range extends 200mV beyond the supply rails. |
| 4 | V- | power_in | Negative power supply, which serves as ground in single-supply operation; the total supply V+ to V- is specified from 1.8V to 5.5V. |
| 5 | +In B | input | Non-inverting input of amplifier B, whose common-mode voltage range extends 200mV beyond the supply rails. |
| 6 | -In B | input | Inverting input of amplifier B, whose common-mode voltage range extends 200mV beyond the supply rails. |
| 7 | Out B | output | Output of amplifier B, which swings to within 350mV of the rails with a 10kΩ load and supplies up to ±8mA output current. |
| 8 | V+ | power_in | Positive power supply, specified from 1.8V to 5.5V relative to V-, and should be bypassed with 0.01µF ceramic capacitors. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `OPA2349UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `opa2349ua-etched.step` / `opa2349ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa2349ua.step` / `opa2349ua.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/opa2349) (28 pp, sha256 `2ad4d2616ad20ca5`, 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/opa2349ua-datasheet.pdf)