GS9025A_05 Datasheet, PDF (5/18 Pages) Gennum Corporation – Serial Digital Receiver

PIN CONNECTIONS
DDI
DDI
V_{CC_75}
V_CC
V_EE
SDI
SDI
V_CC
V_EE
CD_ADJ
AGC-
44 43 42 41 40 39 38 37 36 35 34
1
33
2
32
3
31
4
30
5
GS9025A
29
6
TOP VIEW
28
7
27
8
26
9
25
10
24
11
23
12 13 14 15 16 17 18 19 20 21 22
V_EE
SDO
SDO
V_EE
SCO
SCO
V_EE
AUTO/MAN
SS0
SS1
SS2
PIN DESCRIPTIONS
NUMBER
SYMBOL TYPE
DESCRIPTION
1, 2
DDI/DDI
I
Digital data inputs (Differential ECL/PECL).
3, 44
V_CC_75
I
Power supply connection for internal 75Ω pull-up resistors connected to DDI/DDI.
4, 8, 13, 22, 35
V_CC
5, 9, 14, 18, 27,
V_EE
30, 33, 34, 37
I
Most positive power supply connection.
I
Most negative power supply connection.
6, 7
SDI/SDI
I
Differential analog data inputs.
10
CD_ADJ
I
Carrier detect threshold adjust.
11, 12
AGC-, AGC+
I
External AGC capacitor. V_{COMMON MODE}=2.7V TYP.
15
LF+
I
Loop filter component connection.
16
LFS
I
Loop filter component connection.
17
LF-
I
Loop filter component connection.
19
R_VCO_RTN
I
Frequency setting resistor return connection.
20
R_VCO
I
Frequency setting resistor connection.
21
CBG
I
Internal bandgap voltage filter capacitor.
23, 24, 25
SS[2:0]
I/O Data rate indication (auto mode) or data rate select (manual mode). TTL/CMOS
compatible I/O. In auto mode, these pins can be left unconnected.
26
AUTO/MAN
I
Auto or manual mode select. TTL/CMOS compatible input.
GENNUM CORPORATION
5 of 18
522 - 75 - 05