# OPA4340UA

**UMW** · Operational Amplifier · SOP-14

OPA4340UA from UMW, in a SOP-14. 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 | OUTA | output | Output of channel A op-amp. Rail-to-rail output, swings within 1 mV of V+/V- rails with a 100 kΩ load. |
| 2 | -INA | input | Inverting (negative) input of channel A op-amp. Rail-to-rail input, common-mode range extends 500 mV beyond each supply rail. |
| 3 | +INA | input | Non-inverting (positive) input of channel A op-amp. Rail-to-rail input. |
| 4 | V+ | power_in | Positive (highest) power supply. Single-supply operation from 2.5 V up to 5.5 V (absolute-max supply span typically 7 V). Decouple with 0.1 µF near the pin. |
| 5 | +INB | input | Non-inverting (positive) input of channel B op-amp. Rail-to-rail input. |
| 6 | -INB | input | Inverting (negative) input of channel B op-amp. |
| 7 | OUTB | output | Output of channel B op-amp. Rail-to-rail output. |
| 8 | OUTC | output | Output of channel C op-amp. Rail-to-rail output. |
| 9 | -INC | input | Inverting (negative) input of channel C op-amp. |
| 10 | +INC | input | Non-inverting (positive) input of channel C op-amp. |
| 11 | V- | power_in | Negative (lowest) power supply. Tie to ground for single-supply operation, or to a negative rail for split-supply use. |
| 12 | +IND | input | Non-inverting (positive) input of channel D op-amp. |
| 13 | -IND | input | Inverting (negative) input of channel D op-amp. |
| 14 | OUTD | output | Output of channel D op-amp. Rail-to-rail output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOP-14 |
| Category | Op-amp/Cmp |
| Pins | 14 |

## Ordering variants

Same part, different packaging or reel option.

- `OPA4340UA`

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input offset voltage (25°C) | VOS | -500 |  | 500 | µV | TA=+25°C, RL=10kΩ, VCM=VOUT=midsupply, VS=5V | 8 |
| Voltage output swing from rail, RL=100kΩ | VO |  | 1 | 5 | mV | RL=100kΩ, AOL≥106dB | 9 |
| Voltage output swing from rail, RL=10kΩ | VO |  | 10 | 50 | mV | RL=10kΩ, AOL≥106dB | 9 |
| Voltage output swing from rail, RL=2kΩ | VO |  | 40 | 200 | mV | RL=2kΩ, AOL≥106dB | 9 |
| Common-mode voltage range (lower limit) | VCM | -0.3 |  |  | V |  | 8 |
| Specified voltage range | VS | 2.7 |  | 5.5 | V |  | 9 |
| Operating voltage range | VS | 2.5 |  | 5.5 | V |  | 9 |
| Quiescent current (per amplifier) | IQ |  | 750 | 950 | µA | IO=0, VS=5V | 9 |
| Specified temperature range | TA | -40 |  | 85 | °C |  | 9 |
| Operating temperature range | TA | -55 |  | 125 | °C |  | 9 |
| Storage temperature range | TSTG | -55 |  | 125 | °C |  | 9 |
| Supply voltage | VS | 2.7 |  | 5.5 | V | Over operating free-air temperature range (unless otherwise noted) | 7 |
| Specified temperature | TA | -40 |  | 125 | °C | Over operating free-air temperature range (unless otherwise noted) | 7 |
| Supply voltage | VS |  |  | 5.5 | V | Over operating free-air temperature range (unless otherwise noted) | 6 |
| Signal input terminals voltage | VI | -0.5 |  | 0.5 | V | Input terminals diode-clamped to supply rails | 6 |
| Signal input terminals current | II | -10 |  | 10 | mA | Input signals beyond the supply rails by more than 0.5 V should be current limited | 6 |
| Operating free-air temperature | TA | -55 |  | 125 | °C |  | 6 |
| Junction temperature | TJ |  |  | 150 | °C |  | 6 |
| Storage temperature | TSTG | -55 |  | 125 | °C |  | 6 |
| Human-body model ESD | V(ESD) | -600 |  | 600 | V | HBM, per ANSI/ESDA/JEDEC JS-001 | 6 |
| Charged-device model ESD | V(ESD) | -250 |  | 250 | V | CDM, per JEDEC JESD22-C101 | 6 |
| Junction-to-ambient thermal resistance (SOP 14 pins) | RθJA |  | 83.8 |  | °C/W |  | 7 |
| Junction-to-case (top) thermal resistance (SOP 14 pins) | RθJC(top) |  | 70.7 |  | °C/W |  | 7 |
| Junction-to-board thermal resistance (SOP 14 pins) | RθJB |  | 59.5 |  | °C/W |  | 7 |
| Junction-to-top characterization parameter (SOP 14 pins) | ψJT |  | 11.6 |  | °C/W |  | 7 |
| Junction-to-board characterization parameter (SOP 14 pins) | ψJB |  | 37.7 |  | °C/W |  | 7 |

## CAD (KiCad official)

- Symbol: `OPA4340UA`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOP-14 (KiCad packages3D, STEP)
- 3D model files: `opa4340ua-etched.step` / `opa4340ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa4340ua.step` / `opa4340ua.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`opa4340ua.step`](opa4340ua.step) | 195 KB | You want the bare part, or you mark your own boards. |
| [`opa4340ua-etched.step`](opa4340ua-etched.step) | 2.2 MB | You want the part with `OPA4340UA` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 560 faces against 237 in the bare model. It
survives export, section views, and rendering in any CAD tool, and it drops straight
into KiCad or Fusion with no extra setup.

## Provenance

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

- **Datasheet:** [UMW datasheet](docs/opa4340ua-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/opa4340ua-datasheet.pdf)