GS2974B Datasheet, PDF (7/17 Pages) Gennum Corporation – HD-LINX III Adaptive Cable Equalizer

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
Symbol Conditions
Min
Typ
Max
Units Notes
Serial input data rate
DR_SDO
–
143
–
2970
Mb/s
–
Input Voltage Swing
ΔV_SDI
T_A =25°C, differential,
720
800
950
mV_p-p
1
270Mb/s and 1.485Gb/s
T_A =25°C, differential,
2.97Gb/s
720
800
880
mV_p-p
1
Output Voltage Swing
ΔV_SDO
100Ω load, T_A =25°C,
differential
600
750
1050
mV_p-p
–
Output Jitter of Various
–
Cable Lengths and Data
Rates
–
270Mb/s
–
Belden 1694A: 0-200m
–
0.2
UI
2
270Mb/s
–
0.2
–
UI
4
Belden 1694A: 200-250m
–
1.485Gb/s
–
−
0.25
UI
2
Belden 1694A: 0-160m
–
1.485Gb/s
–
0.3
–
UI
4
Belden 1694A: 160-230m
–
2.97Gb/s
–
–
0.4
UI
2
Belden 1694A: 0-120m
–
2.97Gb/s
–
0.4
–
UI
4
Belden 1694A: 120-140m
Output Rise/Fall time
–
20% - 80%
40
80
220
ps
–
Mismatch in rise/fall time
–
–
–
–
30
ps
–
Duty cycle distortion
–
–
–
–
30
ps
–
Overshoot
–
–
–
–
10
%
–
Input Return Loss
–
–
15
21
–
dB
3
Input Resistance
–
single ended
–
1.52
–
kΩ
–
Input Capacitance
–
single ended
–
1
–
pF
–
Output Resistance
–
single ended
–
50
–
Ω
–
NOTES:
1. 0m cable length.
2. All parts are 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 CB2974B 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.
GS2974B GS2974B HD-LINX™ III Adaptive Cable
Equalizer
Data Sheet
45062 - 3
April 2009
7 of 17