NS4150B

@@ -0,0 +1,43 @@+# NS4150B++**Shenzhen Nsiway Tech** · Audio Power OpAmps · MSOP-8++NS4150B from Shenzhen Nsiway Tech, in a MSOP-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. Logic high (VIH ≥ 1.2V, up to VDD) enables the amplifier; logic low (VIL ≤ 0.2V) puts the device into shutdown. Typical shutdown leakage 0.1µA at VDD=3.6V. |+| 2 | Bypass | passive | Internal common-mode voltage bypass. Connect a 1µF ceramic capacitor from this pin to GND to filter the internal mid-supply reference. |+| 3 | INP | input | Positive audio input. AC-coupled through a series capacitor and input resistor Rin; combined with the internal 240kΩ feedback resistor to set differential gain AVD = 240kΩ / Rin. |+| 4 | INN | input | Negative audio input. AC-coupled through a series capacitor and input resistor Rin; used differentially with INP, or grounded through Cin/Rin for single-ended input. |+| 5 | VON | output | Negative Class-D BTL audio output. Drives one side of the speaker load (4Ω or 8Ω); filterless PWM output, optional ferrite bead + 1nF cap for EMI suppression on long speaker leads. |+| 6 | VCC | power_in | Supply input and power stage supply. Recommended operating range 2.2V-5.0V (absolute max 5.25V). Decouple with a 1µF ceramic close to the pin, optionally add 10µF for low-frequency filtering. |+| 7 | GND | power_in | Device ground. Return path for supply, bypass capacitor, and speaker EMI filter capacitors. |+| 8 | VOP | output | Positive Class-D BTL audio output. Drives the other side of the speaker load; filterless PWM output, optional ferrite bead + 1nF cap for EMI suppression. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shenzhen Nsiway Tech |+| Package | MSOP-8 |+| Category | Op-amp/Cmp |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `NS4150B`+- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`+- 3D model: MSOP-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shenzhen Nsiway Tech datasheet](docs/ns4150b-datasheet.pdf) (9 pp, sha256 `8f26ce641fd0ead9`, 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](docs/ns4150b-datasheet.pdf)

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