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  20W stereo amplifier SL-A08-A  bird sound player
 

1. Introduce

SL-A08-A is used MAX98400A IC, it provide high-performance, thermally efficient amplifier solutions. it delivers 20W into 4Ω loads.

An integrated limiting circuit prevents output clipping distortion, protects small speakers from transient voltages, and reduces power dissipation.

A thermal-foldback feature can be enabled to automatically reduce the output power at above a junction temperature of +120°C. Traditional thermal protection is also available in addition to robust overcurrent protection.

it operate from a single 8V to 18V supply and provide a high 67dB PSRR, eliminating the need for a regulated power supply. They offer up to 90% efficiency from a 12V supply.

Filterless modulation allows it to pass EN55022B EMI limits with 1m cables using only a low-cost ferrite bead and small-value capacitor on each output.

Both devices feature eight-digitally-controlled gain settings.

Comprehensive click-and-pop reduction circuitry minimizes noise coming into and out of shutdown.

2. Aplication

·        Power speaker

·        Digital product

·        Computer and laptop

·        Portable product

·        Wireless product

·        TV, DVD and the other product　

3. Feature

·        Output Power:   each channel 20W at RL=4Ω,VCC=12V

·        Power efficiency is up to 90%

·        Low Working Voltage Down To 8V, High Working Voltage up To 15V

·        Thermal Protection function　

·        Output Pin Short-Circuit Protection　

·        Separate VCC & PVCC

·        Class-D stereo audio design

·        Components use SMT decal, the board dimension is very small

·        IC decal is 36-TQFN

·        Support MP3 function and LCD display

·        No external heat-sink, Less heat, save heat sink cost

·        The current is very small

·        The PCB design provides both bead and LC solutions

The dimension is only 51.5mm*37.8mm