Viewpia LC-32IC10, Service Manual

Page: 7 / 68

7
IC BLOCK DIAGRAM (MP7720)
20W output at V
DD
= 24V into a 4 load
THD+N as low as 0.06%
90% efficiency at 20W
Low Quiescent Current (2mA)
Switching Frequency to 1MHz
7.5V to 24V operation from single supply
Integrated Start up and Shut Down
Pop Elimination Circuit
Thermal protection
Integrated 18m
switches
Mute / Standby-mode (Sleep)
Tiny 8Pin SOIC or PDIP Package
Evaluation Board Available
IC BLOCK DIAGRAM (MP7720)
IC BLOCK DIAGRAM (TW9918)
RGB/YCrVb1
Clamp
RGB/YCrVb0
FB1/0
Analog V
ideo In
YIN
CIN1
CIN0
MUX0
MUX1
MUX2
MUX3
TMODE
T
est
Clock
Y/C
Memory controller
Y
Cb
Cr
T0-5
SIAD
SCLK
SDA
27Mhz
MUX4
MUX5
MUXOUT
YBFOUT
ADCX4
AGC/Clamp
ADCX2
4-Hadaptive comb filter
Frame-comb filter & Motion detector
Chroma Demodulator
RGB-YUV Contrast Saturation Brightness
T
int
Y
Cb
Cb
FB
MIXER
3D Noise Reduction
Contrast/Brigntness Peaking/CTI
H/V Down Scaler/Cropping
2Wire Serial Bus
VBI Slicer
Sync Processor
VBI Pass through
V
ideo Interface
Sync Generator
SDRAM
HS
OE
PDN
CLKx1
CLKx2
HACTIVE
VCLK
MPOUT
VD(7:0)
VD(15:8)
VSYNC
HSYNC
FIELD
VACTIVE
DVALID