datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

GS1545-CQRE3 View Datasheet(PDF) - Gennum -> Semtech

Part Name
Description
View to exact match
GS1545-CQRE3
Gennum
Gennum -> Semtech Gennum
GS1545-CQRE3 Datasheet PDF : 19 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
PIN DESCRIPTIONS (Continued)
NUMBER
SYMBOL
106
DDI_VTT
LEVEL
Analog
108, 109
DDI, DDI
Differential
ECL/PECL
110
PD_VCC
Power
111
A/D
TTL
112
113
117
120, 126
122, 124
PDSUB_VEE
PD_VEE
EQI_VCC
EQI_VEE
SDI, SDI
Power
Power
Power
Power
Analog
TYPE
Input
Input
Input
Input
Input
Input
Input
Input
DESCRIPTION
Bias Input. Selectable input for interfacing standard ECL outputs
requiring 50pull down to VTT power supply for a seamless interface.
See Typical Application Circuit for recommended circuit application.
Digital Data Input Signals. Digital input signals from a GS1504
Equalizer or HD crosspoint switch.
Because of on chip 50termination resistors, a PCB trace
characteristic impedance of 50is recommended.
Positive Supply. Phase detector most positive power supply
connection.
Control Signal Input. Used to select between the SDI/SDI input or
DDI/DDI input.
When A/D is HIGH; the SDI/SDI input is selected.
When A/D is LOW; the DDI/DDI input is selected.
Substrate Connection. Connect to phase detector’s most negative
power supply.
Negative Supply. Phase detector most negative power supply
connection.
Positive Supply. Most positive power supply connection for serial input
stage.
Negative Supply. Most negative power supply connection for serial
input stage.
Serial Data Input Signals. AC coupled termination is recommended.
Single ended to differential conversion is also feasible. The SDI and
SDI input is selected when the A/D signal is high.
Ensure that the trace length between the input connector and the
GS1545 IC is kept to a minimum and that a PCB trace characteristic
impedance of 75is maintained between the connector and the
device.
GENNUM CORPORATION
9 of 19
522 - 28 - 05
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]