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)

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