This amplifier circuit based MAX9751 IC which work on the 5 Volt voltage, unipolar, and a 2.6 Watt power output per channel. In addition, there is a headphone output with separate amplifier and the input selector inputs – you can connect two sources of signal.
Characteristic :
| Supply voltage | : 4,5V-5,5V |
| Supply current absence of a signal | : 14mA |
| Output power (max) | : 2.6W |
| THD (P = 1W, RL = 4 Ohm) | : 0.02% |
| S / N ratio | : 90dB |
| Frequency range | 22-22000Hz |
A few more words on the chip. This is a bridge amplifier class AB integrated into the protection against overheating, short circuit protected outputs, suppression of inrush current when you turn on and off the amplifier.
Parts list :
| Components | Value |
| C1 | 1uF |
| C2 | 1uF |
| C3 | 1uF |
| C4 | 1uF |
| C5 | 1uF |
| C6 | 1uF |
| C7 | 1uF |
| C8 | 1uF |
| C9 | 0.1 |
| S1 | Anyone with a fixation |
| XS1 | Headphone jack – depends on the headphones |
| DA1 | MAX9751 |
Datasheet can be downloaded here.
