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

CAD (KiCad official)

Symbol: OPA4340UA
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOP-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`opa4340ua.step`	195 KB	You want the bare part, or you mark your own boards.
`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 (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