# OPA340UA

**UMW** · Operational Amplifier · SOP-8

OPA340UA from UMW, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | NC | unconnected | No internal connection. Can be left floating. |
| 2 | -IN | input | Negative (inverting) input of the op-amp. Rail-to-rail input; common-mode range extends 500 mV below V- and 500 mV above V+. |
| 3 | +IN | input | Positive (noninverting) input of the op-amp. Rail-to-rail input; common-mode range extends 500 mV below V- and 500 mV above V+. |
| 4 | V- | power_in | Negative (lowest) power supply. Typically GND in single-supply configurations. Total supply range V+ to V- is 2.5 V to 5.5 V. |
| 5 | NC | unconnected | No internal connection. Can be left floating. |
| 6 | OUT | output | Op-amp output. Rail-to-rail output swings to within 1 mV of V+/V- with a 100-kΩ load. |
| 7 | V+ | power_in | Positive (highest) power supply. Single-supply operation from 2.5 V to 5.5 V (dual-supply ±1.25 V to ±2.75 V). |
| 8 | NC | unconnected | No internal connection. Can be left floating. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-8 |
| Category | Op-amp/Cmp |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `OPA340UA`

## CAD (KiCad official)

- Symbol: `OPA340UA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `opa340ua-etched.step` / `opa340ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa340ua.step` / `opa340ua.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [UMW datasheet](docs/opa340ua-datasheet.pdf) (18 pp, sha256 `e75e687924f6aa75`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/opa340ua-datasheet.pdf)