PAM8406DR音频放大器 5W功放IC

PAM8406DR音频放大器 5W功放IC

PAM8406DR音频放大器 5W功放IC

PAM8406DR音频放大器 5W功放IC

PAM8406DR音频放大器 5W功放IC

The PAM8406 is a 5W audio amplifier with an alternative option

between Class-D and Class-AB output which makes PAM8406 very

ideally for the applications efficiency-EMI compatible.

PAM8406 offers low THD+N, high SNR allowing it to achieve highquality

sound reproduction. The fully differential output wi th new filter

less architecture (Class-D Mode) allows the device to drive the

speaker directly, requiring no low-pass output filters and DC blocking

capacitors, thus to save the system cost and PCB area.

The efficiency of the PAM8406 is up to 90%. It can extend the battery

life, ideally for portable applications. The PAM8406 is fully protected

against faults with short circuit protection and thermal protection.

The PAM8406 is available in SOP-16L/SOP-16(EP) package.

Application Note

1. When the PAM8406 works in Class-D with LC filters, it should be connected with the speaker before it's powered on, otherwise it will be

damaged easily.

2. When the PAM8406 works without LC filters, it's better to add a ferrite chip bead at the outgoing line of speaker for suppressing the possible

electromagnetic interference.

3. The recommended operating voltage is 5.5V. When the PAM8406 is powered with four battery cells, it should be noted that the voltage of four

new dry or alkaline batteries is over 6.0V, higher than its operation voltage, which will probably damage the device. Therefore, it's

recommended to use either four Ni-MH (Nickel Metal Hydride) rechargeable batteries or 3 dry or alkaline batteries.

4. One should not make the input signal too large. Large signal can cause the clipping of output signal when increasing the volume. This will

damage the device because of big gain of the PAM8406.