HT-DD5000W
– 45 –
Figure 45 BLOCK DIAGRAM OF IC
IC403 VHiNJM2279D-1: Video Switch (NJM2279D)
IC803 VHiAK4520A/-1: 20bit 2ch A/D,D/A Converter (AK4520A)
12
3
1
2
4
7
6
14
5
10
8
11
13
Vin1
Vin2
Vin3
SW1
MUTE2
GND1
GND2
V
Vout2
Vout1
V
MUTE1
SW2
6dB
75
Ω
6dB
75
Ω
4.45k
Ω
4.45k
Ω
AMP.
DRIVER
AMP.
DRIVER
4.14k
Ω
4.14k
Ω
20k
Ω
20k
Ω
20k
Ω
20k
Ω
20k
Ω
AINL+
AINL-
AINR+
AINR-
VREFH
VREFL
VCOM
AOUTL
AOUTR
PWAD
PWDA
DEM0 DEM1
MCLK
CMODE
LRCK
SCLK
SDTO
SDTI
DIF0
DIF1
TST1
TST2
TST3
DGND
VD
AGND
VA
∆
∑
Modulator
∆
∑
Modulator
∆
∑
Modulator
∆
∑
Modulator
Decimation
Filter
Decimation
Filter
LPF
LPF
Common Voltage
8x
Interpolator
8x
Interpolator
Serial I/O
Interface
Clock
Divider
5
3
4
1
2
6
28
26
27
24
23
16
17
18
19
20
10
13
14
12
11
25
22
21
8
7
15
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VREFH
VREFL
AINR+
AINR-
AINL+
AINL-
VA
AGND
DIF0
DIF1
LRCK
SCLK
SDTI
SDTO
VCOM
AOUTR
AOUTL
CMODE
PWAD
PWDA
DGND
VD
TST1
TST2
TST3
DEM1
DEM0
MCLK
TOP
VIEW