LC-32D12EA (serv.man2) - Sharp TV Service Manual (repair manual). Page 28

17MB60 uses two 2,5W Class D Mono Audio Amplifers for from 16” to 24” TVs. AZAD2102B is a 2.9 Watts 
(max. can offer 3.0 Watts @ Load = 3Ω,THD=10%, AVdd=DVdd=5.5Volt)with high efficiency filter-free 
class-D audio power amplifier in a 1613 mm x 1613 mm wafer chip scale package (WCSP). AZAD2102B uses 
Current-switch technology to achieve high performance class-d amplifier that features 0.03% THD, 85% 
efficiency, –70 dB PSRR, to improve RF-rectification immunity. AZAD2102B provide a Vibration-Spectrum 
modulation clock for PWM Output. This vibration frequency is around 10KHZ shift (+/- 5KHZ of Fpwm). 

The advantage of the small size package (WCSP) makes AZAD2102B very suitable for mobile phone and 
PDA device application. And the Class-D amplifier structure let AZAD2102B to have highly efficiency 
power consumption than Class-AB amplifier. AZAD2102B can shrink the application board, reduce system 
cost, and external components. 

ESD level protection I/O embedded in AZAD2102B. For general applications, doesn’t need to add extra 
ESD protection device (like Varistors) in application system for AZAD2102B’s I/O.



CMOS Technology 



High Efficiency 85% 



High PSRR 70dB at 217Hz 



Differential OP-amp Input 



AZAD2102B provides Vibration-Spectrum Modulation clock for reduce EMI 



Provide Mute function(set Mute_B to GND will go into Mute status) 



For the input stage AZAD2102B built-in a 10Kohm resistors (Gain setting=29.5dB) 



Maximum Battery Life and Minimum Heat 



Efficiency With an 8-Ω Speaker: 



3.5 mA Quiescent Current 



Output Power at 10% THD 



2.85Watts at AVdd=DVdd=5.0Volt, Rload=4Ω 



1.45Watts at AVdd=DVdd=3.6Volt, Rload=4Ω 



0.30Watts at AVdd=DVdd=3.0Volt, Rload=4Ω 



1.75Watts at AVdd=DVdd=5.5Volt, Rload=8Ω 



0.87Watts at AVdd=DVdd=3.6Volt, Rload=8Ω 



0.41Watts at AVdd=DVdd=3.0Volt, Rload=8Ω 



Eliminate Power on and Power-off “Pop” noise 



A Fewer External Components 



Optimized PWM Output Stage Eliminates LC Output Filter 



Internally generate 290 kHz Switching Frequency to eliminate Capacitor and Resistor 



Improve PSRR (–70 dB) and Wide Supply Voltage (3.0 V to 5.5 V) 



Fully Differential Design Reduces RF Rectification 



This chip has been built-in a very strong ESD protection. 



System level ESD 4KV (IEC 61000-4-2 ESD Contact Level) 



Wafer Chip Scale Package (WCSP) 



TSSOP Package with Exposed Pad