TYPICAL APPLICATION CIRCUIT
The figure below shows the GS9035A connected in a typical auto rate select SMPTE 259M application. Table 4 summarizes
the relevant system parameters.
V
V
CC
CC
10k
V
CC
V
V
CC
CC
4.7n
V
CC
4
3
2
1
28
27
26
4 x 75
5
6
25
24
23
22
21
20
19
DDI
DDI
V
SDO
SDO
SCO
SCO
SSO
SS1
From
GS9024
To
GS9020
1
7
EE
GS9035A
8
V
EE
TOP VIEW
V
9
V
CC
CC1
To LED
Driver
V
10
11
AUTO/MAN
CC
(optional)
}
V
SS2
EE
12
R
13
14
15
16
17
18
All resistors in ohms,
NOTE
C
all capacitors in farads,
unless otherwise shown.
Power supply decoupling
capacitors are not shown.
See application note "EB9035A"
for details on PCB artwork.
1. The 75Ω pullup resistors on SDO/SDO and
SCO/SCO are not required when interfacing
the GS9035A to the GS9020 since the GS9020
has internal 75Ω resistors.
LF
LF1
365
(1%)
R
0.1µ
0.1µ
VCO
1800
15n
C
LF2
3.3p
V
CC
TABLE 5: System Parameters
VCO = 365Ω, ƒH = 540MHz, ƒL = 360MHz
R
SMPTE
SS[2:0]
000
DATA RATE (Mb/s)
LOOP BANDWIDTH
1.2MHz
1
1
1
1
1
143
177
270
360
540
001
1.9MHz
010
3.0MHz
011
4.5MHz
100
6.0MHz
13
522 - 41 - 01
GENNUM [ GENNUM CORPORATION ]
