NS4158

@@ -0,0 +1,44 @@+# 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)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shenzhen Nsiway Tech datasheet](docs/ns4158-datasheet.pdf) (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](docs/ns4158-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "ns4158",+  "version": "0.1.0",+  "type": "component",+  "description": "Shenzhen Nsiway Tech Audio Power OpAmps, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "op-amp-cmp",+    "ns4158"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "ns4158.kicad_sym",+    "ns4158.kicad_mod",+    "ns4158.glb",+    "ns4158.step",+    "ns4158.lbr",+    "docs/hero.png",+    "docs/ns4158-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file