The SA58670 is a stereo, filter-free class-D audio amplifier which is available in an HVQFN20 package with the exposed Die Attach Paddle (DAP). The SA58670 features independent shutdown controls for each channel. The gain may be set at 6 dB, 12 dB, 18 dB or 24 dB with gain select pins G0 and G1. Improved immunity to noise and RF rectification is increased by high PSRR and differential circuit topology. Fast start-up time and small package makes it an ideal choice for both cellular handsets and
The NXP SA58670 is a stereo, filter-free class-D audio amplifier available in an HVQFN20 package with an exposed Die Attach Paddle. It features independent shutdown controls for each channel and selectable gain settings of 6 dB, 12 dB, 18 dB, or 24 dB via gain select pins.
The device delivers 2.1 W per channel into 4 Ohms at 5.0 V and 1.4 W per channel into 8 Ohms at 5.0 V. It includes thermal and short-circuit shutdown protection and is designed for applications such as cellular handsets, PDAs, portable DVD players, and USB speakers.
| Output power (8 Ohm, 5.0 V) | 1.4 W/channel |
|---|---|
| Supply voltage range | 2.5 V to 5.5 V |
| Selectable gain | 6 dB, 12 dB, 18 dB, 24 dB |
| Package type | HVQFN20 |
| Power efficiency (4 Ohm) | 70% to 74% |
| Power efficiency (8 Ohm) | 84% to 88% |
| Shutdown current | 1000 nA max |
Gain can be set to 6 dB, 12 dB, 18 dB, or 24 dB using the GO and G1 pins.
It is ideal for cellular handsets, PDAs, portable DVD players, USB speakers, and notebook PCs.