component
ns4263
Public Unreviewedby Ray
Shenzhen Nsiway Tech Audio Power OpAmps, SOIC-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownNS4263
Shenzhen Nsiway Tech · Audio Power OpAmps · SOIC-16
NS4263 from Shenzhen Nsiway Tech, in a SOIC-16. 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 | SD | input | Shutdown and Class-AB/Class-D mode-select control via one-wire pulse (VIH=1.4V min, VIL=0.4V max). A logic high held >100 us places the chip in low-power shutdown; a single falling edge sets Class-AB, two consecutive falling edges set Class-D. THI/TLO pulse widths must be 1-12 us. |
| 2 | GND | power_in | Device ground / power return. Connect together with pins 7 and 15 to the board ground plane. |
| 3 | VoPA | output | Left-channel BTL positive output. Drives one side of the left speaker (4-8 Ω typical) in bridge-tied load mode; in single-ended headphone mode this side is coupled through the 100 uF output cap. |
| 4 | VDD | power_in | Main analog/PWM supply input, 3.0-5.5 V operating (6 V abs max). Bypass with 10 uF electrolytic in parallel with 0.1 uF ceramic close to the pin; tie together with pin 13. |
| 5 | VoNA | output | Left-channel BTL negative output. Drives the return side of the left speaker in bridge mode; used as the left-channel single-ended output to the headphone jack via the 100 uF DC-blocking capacitor. |
| 6 | INNA | input | Left-channel inverting audio input. AC-coupled through Ci (0.1-0.39 uF) and series input resistor Ri (typ. 20 kΩ); gain per channel Av = 240k / Rin. Non-inverting input is tied internally to VREF. |
| 7 | GND | power_in | Device ground / power return. Tie together with pins 2 and 15 to the ground plane. |
| 8 | NC | unconnected | No internal connection. Leave floating or tie to ground per PCB convenience. |
| 9 | NC | unconnected | No internal connection. Leave floating or tie to ground per PCB convenience. |
| 10 | VREF | passive | Internal mid-supply bias reference (approx. VDD/2). Requires a 1 uF bypass capacitor Cb to GND; the cap value sets startup ramp / pop-noise behavior. |
| 11 | INNB | input | Right-channel inverting audio input. AC-coupled through Ci (0.1-0.39 uF) and series input resistor Ri (typ. 20 kΩ); gain per channel Av = 240k / Rin. Non-inverting input is tied internally to VREF. |
| 12 | VoNB | output | Right-channel BTL negative output. Drives the return side of the right speaker in bridge mode; used as the right-channel single-ended output to the headphone jack via the 100 uF DC-blocking capacitor. |
| 13 | VDD | power_in | Main analog/PWM supply input, 3.0-5.5 V operating (6 V abs max). Tie together with pin 4 and bypass with 10 uF electrolytic in parallel with 0.1 uF ceramic close to the pin. |
| 14 | VoPB | output | Right-channel BTL positive output. Drives one side of the right speaker (4-8 Ω typical) in bridge-tied load mode. |
| 15 | GND | power_in | Device ground / power return. Tie together with pins 2 and 7 to the ground plane. |
| 16 | HP-IN | input | Headphone-mode select input (VIH=1.4V min, VIL=0.4V max). Logic low = BTL speaker mode; logic high = single-ended stereo headphone mode. Typically driven from a resistor divider off the headphone jack's mechanical switch (HP CONTROL) so plug insertion auto-switches the output topology. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen Nsiway Tech |
| Package | SOIC-16 |
| Category | Op-amp/Cmp |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
NS4263 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOIC-16 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen Nsiway Tech datasheet (None pp, sha256
7be7db0e3e023b07, 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).
Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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