NS8002 from Shenzhen Nsiway Tech, 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	SD	input	Shutdown control pin. Active-high shutdown: drive HIGH to disable the amplifier (low-power mode, typ. 1µA), drive LOW to enable normal operation. Must not be left floating.
2	Bypass	passive	Internal common-mode (VCC/2) bias bypass. Connect a 1.0µF capacitor from this pin to GND to filter the mid-rail reference and improve PSRR.
3	+IN	input	Non-inverting analog audio input to the internal op-amp. Typically AC-coupled through an input capacitor.
4	-IN	input	Inverting analog audio input to the internal op-amp. Used with an external feedback resistor (Rf) and input resistor (Ri) to set the closed-loop gain.
5	VO1	output	Analog audio output 1 - one leg of the BTL bridge to the loudspeaker. Connect directly to one terminal of the 4Ω/8Ω load (no output coupling capacitor required).
6	VDD	power_in	Positive supply voltage input. Operating range 3.0V to 5.25V (abs-max 2.8-5.5V). Decouple with a 1.0µF tantalum (Cs) close to the pin.
7	GND	power_in	Power/ground return. Connect to the system ground plane.
8	VO2	output	Analog audio output 2 - the second (inverted, Av=-1) leg of the BTL bridge to the loudspeaker. Connect directly to the other terminal of the 4Ω/8Ω load.

Key specifications

Parameter	Value
Manufacturer	Shenzhen Nsiway Tech
Package	SOP-8
Category	Op-amp/Cmp
Pins	8

CAD (KiCad official)

Symbol: NS8002
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
`ns8002.step`	122 KB	You want the bare part, or you mark your own boards.
`ns8002-etched.step`	1.8 MB	You want the part with `NS8002` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 437 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: Shenzhen Nsiway Tech datasheet (14 pp, sha256 abdf6c36ebb2278b, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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