Sanyo LCD-40XR10FB Service Manual page 24

performance
 M iscellaneous

· E mbedded 8-bit MCU
· C lock generation from a single 24MHz crystal
· S upports I2C interface with bypass mode
· O perating voltage: 3.3V and 1.2V
· 4 8-pin LQFP package
3、 Audio power amplifier RENESAS R2A15112
R2A15112FP is a Digital Power Amplifier IC developed for TV.
R2A15112FP has a maximum power of 15W(typ) × 2ch.
(VD = 24V,THD = 1%, SE) at a 4 Ω load.
It is possible to replace a conventional analog amplifier
with a digital amplifier easily.
●Maximum power out put (No external heat sink)
(note) These apply when the thermal pad is soldered to
the printed-circuit board directly.
Recommended Power Condition
SE operation mode :15Wx2ch(VD=24V,4Ω load,THD+N:1%）
BTL operation mode:30Wx1ch(VD=21V,8Ω load,THD+N:10%）
●Highly efficient, low noise, and low distortion
●Popless
●Built-in protection - Overcurrent, overheat, and undervoltage
●Built-in Mute and Standby function
●The gain can be changed to four settings by two terminals.
●Power supply voltage : 11V to 25V
●Speaker Impedance : from 4 to 8Ω
L IN1
IN2
R
CBIAS
ROSC
CLOCK
MUTEL
STBYL
GAIN1 GAIN2
A
SE/BTL
Selector
A
Oscillator
Control
Logic
Under Voltage
Detection
PROT
PWM
Gen.
PWM
Gen.
10V
Over Current
Detection 5V
Over Temp.
Detection
GND
HB1
VD1
OUT1
VS1
HB2
VD2
OUT2
VS2
DVDD
AVCC
VREF