2.3 AC Electrical Characteristics
Table 2-2: AC Electrical Characteristics
V
CC
= 3.3V ±5%, T
A
= 0°C to 70°C, unless otherwise shown
Parameter
Serial
input data rate
Input Voltage
Swing
Symbol
DR
SDO
ΔV
SDI
Conditions
–
T
A
=25°C, differential,
270Mb/s and 1.485Gb/s
T
A
=25°C, differential,
2.97Gb/s
Min
143
720
Typ
–
800
Max
2970
950
Units
Mb/s
mV
p-p
mV
p-p
mV
p-p
UI
Notes
–
1
720
800
880
1
Output Voltage
Swing
ΔV
SDO
–
100Ω load, T
A
=25°C,
differential
270Mb/s
Belden 1694A: 0-300m
270Mb/s
Belden 1694A: 300-350m
1.485Gb/s
Belden 1694A: 0-140m
1.485Gb/s
Belden 1694A: 140-200m
2.97Gb/s
Belden 1694A: 0-70m
2.97Gb/s
Belden 1694A: 70-120m
20% - 80%
–
–
–
–
single ended
single ended
single ended
600
750
1050
–
Output
Jitter
of Various
Cable
Lengths and Data
Rates
–
–
0.2
2,5
–
–
0.2
–
UI
4,5
–
–
0.25
UI
2,5
–
–
0.3
–
UI
4,5
–
–
–
0.3
UI
2,5
–
–
0.3
–
UI
4,5
Output Rise/Fall time
Mismatch in rise/fall time
Duty cycle distortion
Overshoot
Input Return Loss
Input Resistance
Input
Capacitance
Output Resistance
NOTES:
–
–
–
–
–
–
–
–
40
–
–
–
15
–
–
–
80
–
–
–
21
1.52
1
50
220
30
30
10
–
–
–
–
ps
ps
ps
%
dB
kΩ
pF
Ω
–
–
–
–
3
–
–
–
1. 0m cable length.
2. All parts were production tested. In order to guarantee jitter over the full range of specification (V
CC
= 3.3V ±5%, T
A
= 0°C to 70°C, and
720-880mV launch swing from the SDI cable driver) the recommended applications circuit must be used.
3. Tested on CB2974A board from 5MHz to 3GHz.
4. Based on characterization data using the recommended applications circuit, at V
CC
= 3.3V, T
A
= 25°C and 800mV launch swing from the SDI
cable driver
5. Equalizer Pathological test signal was used.
GS2974A HD-LINX™ III Adaptive Cable Equalizer
Data Sheet
42216 - 3
January 2009
7 of 16
GENNUM [ GENNUM CORPORATION ]
