LMH0324
ZHCSIC8B –APRIL 2016–REVISED JUNE 2018
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DEM (dB)
表 9. VOD and DE Register Settings (接下页)
VOD REG SETTING
OUT0±: 0x30[5]=1, 0x30[2:0]
OUT1±: 0x32[5]=1, 0x32[2:0]
DEM REG SETTING
OUT0±: 0x31[6]=1, 0x31[2:0]
OUT1±: 0x33[6]=1, 0x33[2:0]
VOD (mVpp)
4
4
4
5
5
5
5
5
6
6
6
6
6
7
7
7
7
7
2
3
4
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
716
716
716
810
810
810
810
810
880
880
880
880
880
973
973
973
973
973
-1.8
-3.0
-4.0
-0.8
-2.4
-3.6
-4.6
-6.1
-1.0
-2.7
-4.0
-5.0
-6.5
-1.2
-3.1
-4.6
-5.7
-7.1
8.2.4 Application Performance Plots
The LMH0324 performance was measured with the test setups shown in 图 17.
CC
75 Q /}ꢀÆ /ꢀꢁoꢂ
Pattern
Generator
IN0+ LMH0324 OUT0±
Oscilloscope
VO = 800 mVp-p,
PRBS10
图 17. Test Setup for LMH0324 Cable Equalizer (IN0+)
The eye diagrams in this subsection show how the LMH0324 improves overall signal integrity in the data path
when different cable lengths are used at IN0+.
56 ps/DIV
56 ps/DIV
图 18. 2.97 Gbps, CC = 150 m Belden 1694A
图 19. 2.97 Gbps, CC = 200 m Belden 1694A
28
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