an8934fa Panasonic Corporation of North America, an8934fa Datasheet - Page 2

• Manufacturer Part Number: an8934fa
• Description: Video Signal Processing And Qpsk Demodulation Ic For Bs/cs Broadcasting
• Manufacturer: Panasonic Corporation of North America

AN8934FA
2
Pin No.
QPSK/CLK GND
Block Diagram
Pin Descriptions
1
2
3
4
5
6
7
8
9
Unswitch V
bit stream in
CLK V
VCO out
CLK out
VCO in
Internal
NR SW
BB in
PD in
Q out
I out
CC
CC
Detection output changeover 1
Detection output changeover 2
External detection signal input
Video output mute
Input amp. gain adjustment
External bit-stream input
Reference voltage
C/N detection voltage adjustment
Bit-stream output
37
38
39
40
41
42
43
44
45
46
47
48
VCO
Comp.
Description
VCO1
CR
ref.
Costas
P.D.
1/6
1/8
VCO2
AGC
500 kHz
Reg.
L.P.F.
P.D.
Pin No.
linear
10
11
12
13
14
15
16
17
18
Non
Noise
amp.
500 kHz
L.P.F.
5.7 MHz
9 MHz
B.P.F.
B.P.F.
DET
Bit
BS/CS mode changeover
CS mode changeover / AFC control
Detection output 1
Detection output 2
Bit-stream detection
Detection output 3
Filter reference
4.5 MHz L.P.F. input
GND (Video system)
N.R.
Video
BS/CS
AFC
4.5 MHz
clamp2
clamp1
L.P.F.
Pulse
Pulse
Description
24
23
22
21
20
19
18
17
16
15
14
13
Video V
Video GND
Bit stream detector
DET out for MUSE
ICs for TV
CC