GS2994 Datasheet, PDF (8/20 Pages) Semtech Corporation – GS2994 Adaptive Cable Equalizer

Table 2-2: AC Electrical Characteristics (Continued)
V_{CC_A} = 3.3V ±5%, T_A = -40°C to +85°C, unless otherwise shown
Parameter
Symbol Conditions
Min
Typ
Max
Units Notes
Output Jitter of Various
Cable Lengths and Data
Rates
–
2.97Gb/s
–
Belden 1694A: 0-120m
–
2.97Gb/s
–
Belden 1694A: 120-140m
–
0.25
UI
2, 5
0.3
–
UI
3, 5
–
1.485Gb/s
–
Belden 1694A: 0-180m
–
0.25
UI
2, 5
–
1.485Gb/s
–
0.25
–
Belden 1694A: 180-220m
UI
3, 5
–
270Mb/s
–
Belden 1694A: 0-400m
–
0.2
UI
2, 5
Output Rise/Fall time
–
2.97Gb/s & 1.485Gb/s
20% - 80%
–
75
–
ps
–
–
270Mb/s
–
150
–
ps
–
Mismatch in rise/fall time
–
–
–
–
30
ps
–
Duty cycle distortion
–
3G/HD
–
–
30
ps
–
SD
–
–
55
ps
–
Overshoot
–
–
–
–
10
%
–
Input Return Loss
–
–
15
21
–
dB
4
Input Resistance
–
single-ended
–
1.9
–
kΩ
–
Input Capacitance
–
single-ended
–
1.3
–
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_A} = 3.3V ±5%, T_A = -40°C to +85°C, and
720-880mV launch swing from the SDI cable driver) the recommended applications circuit must be used.
3. Based on characterization data using the recommended applications circuit, at V_{CC_A} = 3.3V, T_A = 25°C and 800mV launch swing from the
SDI cable driver.
4. Tested on a GS2994 board from 5MHz to 3GHz.
5. GAIN_SEL = 0
GS2994 GS2994 Adaptive Cable Equalizer
Data Sheet
53967 - 4
August 2012
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