component
NS4150B
Public Made by Adomby adom
Shenzhen Nsiway Tech Audio Power OpAmps, MSOP-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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Contents
README
markdownNS4150B
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 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Pin pin voltage VDD (power supply voltage, absolute maximum) | VDD | -0.3 | 5.25 | V | 2 | ||
| INP/INN/CTRL pin voltage | -0.3 | V | 2 | ||||
| Storage temperature | -65 | 150 | °C | 2 | |||
| ESD voltage | -4000 | 4000 | V | 2 | |||
| Latch up | -150 | 150 | mA | 2 | |||
| Junction temperature | 150 | °C | 2 | ||||
| Soldering temperature | 220 | °C | 15 s | 2 | |||
| Recommended operating temperature | -40 | 85 | °C | 2 | |||
| Recommended operating voltage | 2.2 | 5 | V | 2 | |||
| Supply voltage VDD | VDD | 3 | 4.8 | 5 | V | 3 | |
| Power supply quiescent current | IDD | 3 | mA | VIN=0V, VDD-3.6V (as printed), No Load | 3 | ||
| Shutdown leakage current | ISD | 0.1 | 10 | µA | VDD=3.6V, CTRL=0V | 3 | |
| Output offset voltage | VOS | 5 | 20 | mV | VIN=0V, VDD=3.0V to 5.25V | 3 | |
| CTRL input high level | VIH | 1.2 | V | 3 | |||
| CTRL input low level | VIL | 0 | 0.2 | V | 3 | ||
| Output power | PO | 2 | W | THD=1%, f=1KHz, VDD=5V, RL=4Ω | 3 | ||
| Output power | PO | 1.3 | W | THD=1%, f=1KHz, VDD=5V, RL=8Ω | 3 | ||
| Output power | PO | 2.8 | W | THD=10%, f=1KHz, VDD=5V, RL=4Ω | 3 | ||
| Output power | PO | 1.7 | W | THD=10%, f=1KHz, VDD=5V, RL=8Ω | 3 | ||
| Total harmonic distortion plus noise | THD+N | 0.15 | % | VDD=3.6V, f=1kHz, RL=8Ω, Po=0.1W | 3 | ||
| Total harmonic distortion plus noise | THD+N | 0.1 | % | VDD=3.6V, f=1kHz, RL=4Ω, Po=0.5W | 3 | ||
| Power supply rejection ratio | PSRR | -80 | dB | 217Hz | 3 | ||
| Power supply rejection ratio | PSRR | -72 | dB | 20KHz | 3 | ||
| Common mode rejection ratio | CMRR | -70 | dB | 3 | |||
| Efficiency | η | 90 | % | Po=0.6W, f=1kHz, VDD=3.6V, RL=8Ω | 3 | ||
| Modulation frequency | fSW | 400 | kHz | VDD=3.0V to 5.25V | 3 | ||
| Startup time | Tst | 120 | ms | 3 | |||
| Shutdown time | Tsd | 80 | ms | 3 | |||
| Thermal resistance junction-to-case (MSOP-8) | JC | 190 | °C/W | MSOP-8 | 2 |
CAD (KiCad official)
- Symbol:
NS4150B - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ns4150b-etched.step/ns4150b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ns4150b.step/ns4150b.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
ns4150b.step |
123 KB | You want the bare part, or you mark your own boards. |
ns4150b-etched.step |
1.7 MB | You want the part with NS4150B already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 427 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 (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).