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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.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownNS4158
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ns4158.step/ns4158.glbare 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).