MAX3799 데이터 시트보기 (PDF) - Maxim Integrated
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MAX3799 Datasheet PDF : 36 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.)
OUTPUT EYE DIAGRAM AT 14.025Gbps
MAX3799 toc10
RATE_SEL = 1, RXDE_EN = 1
50mV/div
TRANSITION TIME
vs. INPUT AMPLITUDE
70
RATE_SEL = 0, RXDE_EN = 0
60
50
40
30
RATE_SEL = 1, RXDE_EN = 0
LOS THRESHOLD vs. DAC SETTING
180
160
140
120
DEASSERT
100
80
20ps/div
20
RATE_SEL = 1, RXDE_EN = 1
10
0
0
PATTERN = 00001111
20% TO 80%
200 400 600 800 1000 1200
INPUT AMPLITUDE (mVP-P)
60
40
20
0
0
ASSERT
7 14 21 28 35 42 49 56 63
SET_LOS[5:0]
SENSITIVITY vs. DATA RATE
-12
USING FINISAR ROSA
-13
-14
RATE_SEL = 1
-15
-16
-17
-18
-19
-20
-21 RATE_SEL = 0
-22
1
3
5
7
9
11
DATA RATE (Gbps)
Rx INPUT RETURN LOSS
0
-10
-20
-30
-40
-50
-60
100M
1G
10G
100G
FREQUENCY (Hz)
Rx OUTPUT RETURN LOSS
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
100M
1G
10G
100G
FREQUENCY (Hz)
1400
1200
1000
800
600
400
200
0
0
CML OUTPUT AMPLITUDE
vs. DAC SETTING
50 100 150 200 250 300
SET_CML[7:0]
TOTAL SUPPLY CURRENT
vs. TEMPERATURE
140
130
IBIAS = 12mA
120
110
100
90
IBIAS = 9mA
80
IBIAS = 2mA
70
60 IMOD = 2mA; RECEIVER OUTPUT = 400mVP-P;
50 TOTAL SUPPLY MEASURED USING THE SETUP
IN FIGURE 1
40
-40 -25 -10 5 20 35 50 65 80 95
TEMPERATURE (°C)
TOTAL SUPPLY CURRENT
vs. TEMPERATURE
160
150
IMOD = 12mA
140
IMOD = 9mA
130
120
110
100
90
80
IMOD = 2mA
70
60 IBIAS = 2mA; RECEIVER OUTPUT = 400mVP-P;
50
TOTAL SUPPLY MEASURED USING THE SETUP
IN FIGURE 1
40
-40 -25 -10 5 20 35 50 65 80 95
TEMPERATURE (°C)
10 ______________________________________________________________________________________
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