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NS4158

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Shenzhen Nsiway Tech Audio Power OpAmps, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs ns4158: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers ns4158: viewers · Ray 1mo ago
ns4158-etched.fit.json ns4158: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ns4158-etched.glb ns4158: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ns4158-etched.step ns4158: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
ns4158.glb Publish 0.1.0 · Ray 1mo ago
ns4158.kicad_mod Publish 0.1.0 · Ray 1mo ago
ns4158.kicad_sym Publish 0.1.0 · Ray 1mo ago
ns4158.lbr Publish 0.1.0 · Ray 1mo ago
ns4158.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
README.md ns4158: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 15d ago

NS4158

Shenzhen Nsiway Tech · Audio Power OpAmps · SOIC-8

NS4158 from Shenzhen Nsiway Tech, 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 CTRL input Operating mode control input. Selects between normal mode, anti-distortion mode, and shutdown via one-wire pulse (software) or DC voltage level (hardware). Thresholds referenced to VDD (e.g. VIH ≥ 0.4·VDD normal, ≥ 0.9·VDD anti-distortion; SHUTDOWN < 0.2 V).
2 Bypass passive Internal mid-supply bias bypass node. Connect a bypass capacitor (typ. 1 µF) from this pin to GND for PSRR and click/pop performance.
3 NC unconnected No connection. Leave floating or tie to GND.
4 INN input Inverting audio signal input. AC-coupled via input capacitor Ci and input resistor Ri to set closed-loop gain (Av = 2 · Rf_internal / Ri).
5 VoN output BTL PWM speaker output, negative side. Connect directly to one terminal of the loudspeaker; filterless PWM structure - no LC output filter required.
6 VDD power_in Supply voltage input, 3.0 V to 5.25 V (absolute max 5.5 V). Decouple with 100 µF bulk and 0.1 µF (104) ceramic to GND close to the pin.
7 GND power_in Power and signal ground return.
8 VoP output BTL PWM speaker output, positive side. Connect directly to the other terminal of the loudspeaker; filterless PWM structure - no LC output filter required.

Key specifications

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

CAD (KiCad official)

  • Symbol: NS4158
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ns4158-etched.step / ns4158-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ns4158.step / ns4158.glb are the bare package body.

Provenance

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

  • Datasheet: Shenzhen Nsiway Tech datasheet (16 pp, sha256 2cc1f040efd42265, 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