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MAX9744 12V 2*20W class D Amplifier board @8ohm can be customized

MAX9744 amplifier board,class D amplifier board, audio amplifier board

1. Introduce

 

SL-A08-1 is the new design, it is new product of digital amplifier board,use SMT decal of main IC,connection is very simple. High Power efficiency,Less heat.

its very easy to use, but italso has both analog and digital volume control capability. Use a single 1KΩ pot (we includeone) to adjust volume analog-style. Or hook it up to your favorite microcontroller and send I2C commands to set 64-steps of volume amplification.

 

2. Application

 

·        Power speaker

·        Digital product

·        Computer and laptop

·        Portable product

·        Wireless product

·        TV, DVD and the other product

 

3. Feature

 

·        Output Power: Maximum 20 W at RL=4Ω,VCC=13.5V, THD+N = 10%

·        Power efficiency is up to 93%

·        Low Working Voltage Down To 4V, High Working Voltage up To 13.5V

·        Thermal Protection function

·        Output Pin Short-Circuit Protection

·        Separate VCC & PVCC

·        Filterless Spread-Spectrum Modulation Lowers, Radiated RF Emissions from Speaker Cables

·        Class-D stereo audio design

·        Low 0.04% THD+N

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

·        IC decal is QFN44

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

·        Integrated Click-and-Pop Suppression

·        Short-Circuit and Thermal-Overload Protection

·        The current is very small

·        The PCB design provides both bead and LC solutions

·        The dimension is only 42mm×48mm  

 

4. Parameter

 

PARAMETER	Test Condition		MIN  TYP  MAX	UNIT
PO(MAX) Continuous output power (r.m.s)at 1kHz	RL=4Ω	13.5V	20	W
		12V	16
		5V	3.6
	RL=8Ω	13.5V	13	W
		12V	10
		5V	1.8
Output noise			-70	dBV
S/N	Maximum output at THD+N<0.5%, f=1kHz		90	dB
Working Voltage			5      12     13.5	V