OPA2227UA from Texas Instruments, in a SOIC-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	Out A	output	Amplifier A output. Class-AB output stage; +/-45mA typical short-circuit current, drives loads down to 600 ohm with V- +3.5V to V+ -3.5V swing.
2	-In A	input	Inverting input of amplifier A. Bipolar input with +/-2.5nA typical (10nA max) bias current, +/-2.5nA typical offset current. Common-mode range V- +2V to V+ -2V.
3	+In A	input	Non-inverting input of amplifier A. Same DC/AC specs as -In A; differential input impedance 10^7 ohm
4	V-	power_in	Negative supply rail. Operating range -2.5V to -18V referenced to V+ (total Vs = 5V to 36V). Quiescent current 3.7mA typ per amplifier.
5	+In B	input	Non-inverting input of amplifier B. Bipolar input, +/-2.5nA typ bias, common-mode range V- +2V to V+ -2V.
6	-In B	input	Inverting input of amplifier B. Same specs as +In B; 10^9 ohm
7	Out B	output	Amplifier B output. Class-AB output stage matched to Out A; channel separation 110 dB at 1kHz, 5k ohm load.
8	V+	power_in	Positive supply rail. Operating range +2.5V to +18V referenced to V-. Absolute maximum supply voltage +/-18V; bypass with 0.1uF ceramic to V-.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

OPA2227UAU
OPA2227UA
OPA2227UAP

CAD (KiCad official)

Symbol: OPA2227UA
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (27 pp, sha256 9c1e133dfda319a3, retrieved 2026-08-17, tier: manufacturer)
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