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GS3490 Datasheet, PDF (9/22 Pages) Semtech Corporation – Configurable Adaptive Cable Equalizer/Cable Driver | |||
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Table 2-4: AC Electrical Characteristics - Cable Driver Mode
VCC = +3.3V ± 5%, TA= -20°C to +85°C (unless otherwise shown), Functional Temperature Range: -40°C to +85°C
Parameter
Symbol Conditions
Min Typ Max
Serial Data Rate
DRDDI
â
2.97Gb/s
270
â
2970
â
15
25
Additive Jitter
â
1.485Gb/s
â
15
25
SDO Rise/Fall Time
Mismatch in Rise/Fall
Time
Duty Cycle Distortion
Overshoot
Output Return Loss
SDO Output Voltage
Swing
tr, tf
tr, tf
Îtr, Îtf
â
â
ORL
ÎVSDO
270Mb/s
CD_SD_EN = 0, 20% - 80%
CD_SD_EN = 1, 20% - 80%
CD_SD_EN = 0 only
CD_SD_EN = 0, 2.97Gb/s
CD_SD_EN= 0, 1.485Gb/s
CD_SD_EN = 1
CD_SD_EN = 0
5MHz - 1.485GHz
1.485GHz - 2.97GHz
RSET = 750Ω
â
55
85
â
â
135
400
â
950
â
â
35
â
â
14
â
â
20
â
â
50
â
â
10
15
â
â
10
â
â
750
800
880
Guaranteed functional
100
â
DDI/DDI Input Voltage
Swing
ÎVDDI
Guaranteed to meet all published
specifications
250
â
Cable Driver Mode
Enable Delay
â
â
â
0.25
Notes:
1. Single-ended into 75Ω external load.
2. Calculated as the actual positive bit-width compared to the expected positive bit-width using a 1010 pattern.
3. ORL depends on board design. The GS3490 achieves this specification on Semtech's evaluation boards.
250
2200
â
Units Notes
Mb/s
â
pspp
â
pspp
â
pspp
â
ps
â
ps
â
ps
â
ps
1, 2
ps
1, 2
ps
1, 2
%
1
dB
3
dB
3
mVpp
1
mVppd
â
mVppd
â
μs
â
GS3490
Final Data Sheet
GENDOC-058568
Rev. 1
April 2014
www.semtech.com
9 of 22
Proprietary & Confidential
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