MAX3799(2009) 查看數據表（PDF） - Maxim Integrated
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MAX3799
(Rev.:2009)
(Rev.:2009)
Maxim Integrated
MAX3799 Datasheet PDF : 35 Pages
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1Gbps to 14Gbps, SFP+ Multirate Limiting
Amplifier and VCSEL Driver
Typical Operating Characteristics—Limiting Amplifier (continued)
(VCC = 3.3V, TA = +25°C, unless otherwise specified. Figure 1 shows the typical setup used for measurements. Registers are set to
default values unless otherwise noted, and the 3-wire interface is static during measurements. For testing, the RATE_SEL bit was
used and the RSEL pin was left open.)
OPTICAL EYE DIAGRAM
MAX3799 toc19
2.125Gbps, SET_IMOD = 60, 27 - 1 PRBS,
850nm VCSEL, MASK WITH 50%
OPTICAL EYE DIAGRAM
MAX3799 toc20
4.25Gbps, SET_IMOD = 60, 27 - 1 PRBS,
850nm VCSEL, MASK WITH 46%
OPTICAL EYE DIAGRAM
MAX3799 toc21
8.5Gbps, SET_IMOD = 60, 27 - 1 PRBS,
850nm VCSEL, MASK WITH 54%
68ps/div
34ps/div
17ps/div
OPTICAL EYE DIAGRAM
MAX3799 toc22
10.3Gbps, SET_IMOD = 60, 27 - 1 PRBS,
850nm VCSEL, MASK WITH 44%
14ps/div
TRANSITION TIME
vs. MODULATION CURRENT
38
33
FALL TIME
28
23
RISE TIME
18
13
8
PATTERN = 11110000,
DATA RATE = 8.5Gbps
3
2
4
6
8
10
12
MODULATION CURRENT (mAP-P)
ELECTRICAL EYE DIAGRAM
MAX3799 toc23
14.025Gbps, SET_IMOD = 60, 231 - 1 PRBS
EYE WIDTH
62.8ps
14ps/div
TRANSITION TIME
vs. DEEMPHASIS SETTING
41
PATTERN = 11110000,
39 DATA RATE = 8.5Gbps,
IMOD = 10mAP-P
37
35
FALL TIME
33
31
29
RISE TIME
27
25
0 1 2 3 4 5 6 7 8 9 10 11
SET_TXDE[3:0]
DETERMINISTIC JITTER
vs. MODULATION CURRENT
8.0
PATTERN = PRBS, DATA RATE = 10.32Gbps
7.5
7.0
6.5
6.0
5.5
5.0
4.5
2
4
6
8
10
12
MODULATION CURRENT (mAP-P)
MODULATION CURRENT
vs. DAC SETTING
14
12
RLOAD = 75Ω
10
RLOAD = 50Ω
8
6
4
RLOAD = 100Ω
2
0
0 50 100 150 200 250 300
SET_IMOD[8:0]
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