COS8552SR from COSINE, 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	OUT1	output	Output of amplifier A. Rail-to-rail output; swings to within ~5mV of each supply rail with RL=100kΩ (15mV with RL=10kΩ). Short-circuit source/sink current ±7mA.
2	-IN1	input	Inverting input of amplifier A. Input common-mode voltage may range from -Vs - 0.3V to +Vs + 0.3V. Input bias current ±100pA typ.
3	+IN1	input	Non-inverting input of amplifier A. Same voltage range as -IN1 (-Vs - 0.3V to +Vs + 0.3V); rail-to-rail input.
4	-Vs	power_in	Negative power supply or ground. If not tied to ground, bypass with a 0.1µF capacitor as close to the pin as possible. Total supply (+Vs to -Vs) is 1.8V to 5.5V (abs max 6V).
5	+IN2	input	Non-inverting input of amplifier B. Rail-to-rail input; range -Vs - 0.3V to +Vs + 0.3V.
6	-IN2	input	Inverting input of amplifier B. Rail-to-rail input; range -Vs - 0.3V to +Vs + 0.3V.
7	OUT2	output	Output of amplifier B. Rail-to-rail output; swings to within ~5mV of each supply rail with RL=100kΩ. Short-circuit source/sink current ±7mA.
8	+Vs	power_in	Positive power supply, 1.8V to 5.5V (abs max 6V between +Vs and -Vs). Place a 0.1µF bypass capacitor as close to the pin as possible, between +Vs and -Vs or between +Vs and ground.

Key specifications

Parameter	Value
Manufacturer	COSINE
Package	SOP-8
Category	Op-amp/Cmp
Pins	8

Ordering variants

Same part, different packaging or reel option.

COS8552SRA
COS8552SR
COS8552SRB
COS8552SRC
COS8552SRD
COS8552MRA
COS8552MRB
COS8552MRC

CAD (KiCad official)

Symbol: COS8552SR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cos8552sr.step`	122 KB	You want the bare part, or you mark your own boards.
`cos8552sr-etched.step`	2.5 MB	You want the part with `COS8552SR` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 582 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: COSINE datasheet (12 pp, sha256 845c61f20f164396, 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