OPA2189IDR 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	Output of channel A op-amp. Rail-to-rail output stage capable of driving loads within a few tens of mV of either supply rail.
2	-IN A	input	Inverting input of channel A. High-impedance CMOS input; input common-mode range includes the negative supply rail.
3	+IN A	input	Noninverting input of channel A. High-impedance CMOS input; MUX-friendly architecture prevents inrush current under large differential inputs.
4	V-	power_in	Negative (lowest) power supply. Single-supply operation 4.5 V to 36 V, or split-supply ±2.25 V to ±18 V referenced to V+.
5	+IN B	input	Noninverting input of channel B. High-impedance CMOS input; MUX-friendly architecture prevents inrush current under large differential inputs.
6	-IN B	input	Inverting input of channel B. High-impedance CMOS input; input common-mode range includes the negative supply rail.
7	OUT B	output	Output of channel B op-amp. Rail-to-rail output stage capable of driving loads within a few tens of mV of either supply rail.
8	V+	power_in	Positive (highest) power supply. Wide supply range 4.5 V to 36 V single-supply. Quiescent current 1.7 mA max per channel-pair.

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.

OPA2189IDR
OPA2189IDRIDGKR
OPA2189IDRIDGK

CAD (KiCad official)

Symbol: OPA2189IDR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`opa2189idr.step`	122 KB	You want the bare part, or you mark your own boards.
`opa2189idr-etched.step`	2.2 MB	You want the part with `OPA2189IDR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 531 faces against 147 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: Texas Instruments datasheet (58 pp, sha256 0d8a997989aeb646, 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