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GS2974B Datasheet(PDF) 7 Page - Semtech Corporation

Part # GS2974B
Description  HD-LINX??III Adaptive Cable Equalizer
Download  17 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

GS2974B Datasheet(HTML) 7 Page - Semtech Corporation

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GS2974B GS2974B HD-LINX™ III Adaptive Cable
Equalizer
Data Sheet
45062 - 3
April 2009
7 of 17
2.3 AC Electrical Characteristics
Table 2-2: AC Electrical Characteristics
VCC = 3.3V ±5%, TA = 0°C to 70°C, unless otherwise shown
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Notes
Serial input data rate
DRSDO
143
2970
Mb/s
Input Voltage Swing
ΔV
SDI
TA =25°C, differential,
270Mb/s and 1.485Gb/s
720
800
950
mVp-p
1
TA =25°C, differential,
2.97Gb/s
720
800
880
mVp-p
1
Output Voltage Swing
ΔV
SDO
100Ω load, TA =25°C,
differential
600
750
1050
mVp-p
Output Jitter of Various
Cable Lengths and Data
Rates
270Mb/s
Belden 1694A: 0-200m
––
0.2
UI
2
270Mb/s
Belden 1694A: 200-250m
–0.2
UI
4
1.485Gb/s
Belden 1694A: 0-160m
0.25
UI
2
1.485Gb/s
Belden 1694A: 160-230m
–0.3
UI
4
–2.97Gb/s
Belden 1694A: 0-120m
––
0.4
UI
2
–2.97Gb/s
Belden 1694A: 120-140m
–0.4
UI
4
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
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 (VCC = 3.3V ±5%, TA = 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 VCC = 3.3V, TA = 25°C and 800mV launch swing from the SDI
cable driver.


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