Product Overview
The SA58631TK from NXP Semiconductors is a 1W BTL audio amplifier with integrated DC volume control in an HVQFN-16 (3x3mm) package. Operating from 2.5V-5.5V, it features 32-step digital volume control and 0.1% THD+N for clean audio reproduction in portable devices.
Key Specifications
| Output Power | 1W @8Ω, 5V, THD=10% |
| Supply Voltage | 2.5V – 5.5V |
| Gain | 20dB fixed or adjustable |
| DC Volume Control | 32 steps |
| Quiescent Current | 3mA (typ) |
| Shutdown Current | 100nA |
| THD+N | 0.1% @1kHz, 0.5W |
| PSRR | 60dB |
| Operating Temperature | -40°C to +85°C |
| Package | HVQFN-16 (3x3mm) |
Features
- 1W BTL output for direct speaker drive without coupling capacitors
- 32-step DC volume control eliminates external potentiometer
- 100nA shutdown current for ultra-low standby power
- Pop-and-click suppression for clean power transitions
- Short-circuit and thermal protection
Applications
- Portable speaker and Bluetooth speaker amplification
- Mobile phone hands-free speaker driver
- Portable gaming device audio output
- GPS navigation voice output amplifier