GS9025A_05 Datasheet, PDF (17/18 Pages) Gennum Corporation – Serial Digital Receiver

TYPICAL APPLICATION CIRCUIT
V_CC
V_CC
V_CC V_CC^10k
4.7n
V_{CC VCC}
44 43 42 41 40 39 38 37 36 35 34
From
GS9024 ^{see Note 1}
V_CC
V_CC
75
75 10n
37.5 75 10n
V_CC
V_CC
100k
Pot
(Optional)
1 DDI
2 DDI
3 V_{CC_75}
4 V_CC
5 V_EE
6 _SDI
7 _SDI
8 V_CC
9 V_EE
10 CD_ADJ
11 AGC-
GS9025A
TOP VIEW
V_{EE 33}
SDO 32
SDO 31
V_EE 30
SCO 29
SCO 28
V_EE ²⁷
AUTO/MAN 26
SS0 ²⁵
SS1 ²⁴
SS2 ²³
12 13 14 15 16 17 18 19 20 21 22
All resistors in ohms,
all capacitors in microfarads,
unless otherwise stated.
Power supply decoupling
capacitors are not shown.
100p
V_CC
1.8k 15n
365
(1%)
V_CC
0.1µ 0.1µ
3.3p
see Note 3
NOTES
1. It is recommended that the DDI/DDI inputs are not driven when the SDI/SDI inputs are being used.
This minimizes crosstalk between the DDI/DDI and SDI/SDI inputs and maximizes performance.
2. These resistors are not needed if the internal pull-up resistors on the GS9020 are used.
3. It is recommended that for new designs VCO components should be returned to the R_{VCO_RTN} pin
for improved ground bounce immunity. If replacing GS9025 with GS9025A connection to ground
can be maintained.
V_CC V_CC
4 x 75 ^{see Note 2}
To
GS9020
V_CC
} To LED
Driver
(optional)
TABLE 6: R_VCO = 365, ƒ_H = 540MHz, ƒ_L = 360MHz
SMPTE
SS[2:0]
DATA RATE (Mb/s)
1
000
143
1
001
177
1
010
270
1
011
360
1
100
540
LOOP BANDWIDTH (MHz)
1.2
1.9
3.0
4.5
6.0
GENNUM CORPORATION
17 of 18
522 - 75 - 05