Mt8205 Analog Decoupling - Akai LCT2716 Service Manual

A

MT8205 ANALOG DECOUPLING

DACVREF
DACVREF 3
DACFS
DACFS 3
ADCPLLVDD1
4 ADCPLLVDD1 3
ADCPLLVDD
ADCPLLVDD 3
AV33
APLLVDD
APLLVDD 3
AV33
CE23
+
ANALOGVDD
ANALOGVDD 3
10uF/25v
VPLLVDD
VPLLVDD 3
LVDDA
LVDDA 3
ADCVDD
ADCVDD 3
DACVDD
DACVDD 3
AVCM
AVCM 3
VOCM Note for Fix or Adj Regulator
VOCM 3
VICM
VICM 3
3
U8
VCC
3
IN
VREFP4
VREFP4 3
VREFN4
VREFN4 3
+ CE27
ADCVDD0 100uF/16v CB27
ADCVDD0 3
0.1uF
AZ1117 Rdown
PWM2VREF
PWM2VREF 3
Fix regulator 0 ohm
Adj regulator 180 1%
AUXTOP
AUXTOP 3
AUXBOTTOM
AUXBOTTOM 3
REXTA
REXTA 3
APLL_CAP
APLL_CAP 3
XTALI
XTALI 3
XTALO
XTALO 3
2
ADC_VDD
L32
ADC_VDD
FB
BEAD/SMD/0805
1
A
B
FOR DACVDD
L18
FB
CB17 BEAD/SMD/0603 CE24
+
0.1uF
10uF/25v
FOR ADCVDD
Vout
CM1117-3.3V
L28
2
OUT
FB
BEAD/SMD/0805
+ CE28 + CE29
220uF/16v 10uF/25v
SOT223/SMD
Rup
OFF 1.25x(1+Rdown/Rup)
110 1%
1.25x(1+180/110)=3.3V
ADCVDD0
CB34
0.1uF
C0603/SMD
GND
ADCVDD0
CB38
0.1uF
C0603/SMD
GND
ADCVDD0
CB39
0.1uF
C0603/SMD
GND
ADCVDD0
CB45
0.1uF
C0603/SMD
GND
ADCVDD0
CB48
0.1uF
C0603/SMD
GND
ADCVDD0
CB52
0.1uF
C0603/SMD
GND
ADCVDD0
CB54
0.1uF
C0603/SMD
GND
B
C
DACVREF DACFS
C10 R21 XTALI
0.1uF/NC 560
C0603/SMD
GND GND
DACVDD
C13 CB15
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
DACVDD
C16 CB18
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
DACVDD
C18 CB20 APLL_CAP
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
ADC_VDD AV33
L29
ADC_VDD AV33
FB
CB25 CB26 BEAD/SMD/0603
CE30
0.1uF 0.1uF +
C23
0.1uF
47uF/16v
GND
AVCM
CB36
4.7uF
C0603/SMD
GND
L37
VOCM ADCVDD0
FB
CB44 CB41
0.1uF
0.1uF
C0603/SMD
GND
GND PWM2VREF
VICM
CB50
0.1uF
C0603/SMD
GND
VREFP4
CB56
4.7uF
C0603/SMD
GND
CB58
4.7uF
C C0603/SMD
CB60
4.7uF
VREFN4 C0603/SMD
D
R20
DV18A
100k
L17
DV18A
Y1
FB
XTALO BEAD/SMD/0603
27MHz
C11 C12
33pF 33pF
DV33A
L19
GND
FB
BEAD/SMD/0603
C15
0.1uF
R22
33
+ CE78
C20 47uF/16v
1500pF
C0603/SMD
GND
R23
33
LVDDA
CB24
0.1uF
C0603/SMD
GND
AV33
L30
LVDDA
AV33
CB28
0.1uF FB
C0603/SMD BEAD/SMD/0603
GND
C25 + CE31
LVDDA 0.1uF 47uF/16v
CB30
0.1uF
C0603/SMD
GND
REXTA
ADCVDD
C28 CB42
4.7uF 0.1uF
C0603/SMD C0603/SMD LVDDA L38
GND
CB47
+ CE32 0.1uF
47uF/16v C0603/SMD
GND
Title
LCD TV - MediaTek MT8205 Solution
Size Doc Number
C
Date: Tuesday, May 10, 2005
D
E
ADCPLLVDD1
C9 CB14
4.7uF 0.1uF
4
C0603/SMD C0603/SMD
GND
DEL
ANALOGVDD
C14 CB16
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
ADCPLLVDD
C17 CB19
CE25 4.7uF 0.1uF
+
22uF/25v
C0603/SMD C0603/SMD
GND
ANALOGVDD
C19 CB21
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
APLLVDD
3
C21 CB22
CE26 4.7uF 0.1uF
+
22uF/25v
C0603/SMD C0603/SMD
GND
ANALOGVDD
C22 CB23
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
VPLLVDD
C24 CB29
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
VPLLVDD
C26 CB31
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
VPLLVDD
2
C27 CB32
4.7uF 0.1uF
C0603/SMD C0603/SMD
GND
R27
GND
3.3k
TP3
R31
FB AUXTOP
50 TP4
R34
AUXBOTTOM
50
1
Rev
MT8205 DECOUPOMG--ANALOG
V0.1
Sheet 4 of 16
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