LC-22LE22E - Sharp TV Service Manual (repair manual). Page 13

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