Datasheet

MAX3982
SFP Copper-Cable Preemphasis Driver
6 _______________________________________________________________________________________
END-TO-END EYE DIAGRAM,
20m 24AWG CABLE AT 1.0625Gbps
MAX3982 toc06
1.0625Gbps PRBS7 + 100CID PATTERN,
0in FR4 AT INPUT, USING MAX3748
AS RECEIVER, AS SHOWN IN FIGURE 3
END-TO-END EYE DIAGRAM,
20m 24AWG CABLE AT 4.25Gbps
MAX3982 toc04
4.25Gbps PRBS7 + 100CID PATTERN,
0in FR4 AT INPUT, USING MAX3748
AS RECEIVER, AS SHOWN IN FIGURE 3
END-TO-END EYE DIAGRAM,
20m 24AWG CABLE AT 2.125Gbps
MAX3982 toc05
2.125Gbps PRBS7 + 100CID PATTERN,
0in FR4 AT INPUT, USING MAX3748
AS RECEIVER, AS SHOWN IN FIGURE 3
END-TO-END DETERMINISTIC JITTER
vs. CABLE LENGTH AT 1.0625Gbps
MAX3982 toc07
CABLE LENGTH (m)
DETERMINISTIC JITTER (UI)
15105
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0
020
1.0625Gbps PRBS7 + 100CID
PE[1,0] = 01
PE[1,0] = 10
PE[1,0] = 11
12in FR4 AT INPUT
USING MAX3748 AS RECEIVER,
AS SHOWN IN FIGURE 3
PE[1,0] = 00
VERTICAL EYE OPENING
vs. CABLE LENGTH WITH OUTLEV = LOW
MAX3982 toc08
CABLE LENGTH (m)
VERTICAL EYE OPENING (mV
P-P
)
105
100
200
300
400
500
600
700
0
015
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 10
PE[1,0] = 11
4.25Gbps PRBS7 + 100CID
VERTICAL EYE OPENING
vs. CABLE LENGTH WITH OUTLEV = LOW
MAX3982 toc09
CABLE LENGTH (m)
VERTICAL EYE OPENING (mV
P-P
)
105
100
200
300
400
500
600
700
0
015
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 10
PE[1,0] = 11
4.25Gbps PRBS7 + 100CID
INPUT RETURN LOSS vs. FREQUENCY
MAX3982 toc10
FREQUENCY (MHz)
DIFFERENTIAL S11 (dB)
1000
-35
-30
-25
-20
-15
-10
-5
0
-40
100 10,000
USING AGILENT 8720ES AND ATN MICROWAVE
ATN-4112A S-PARAMETER TEST SET
DE-EMBEDDING SMA CONNECTOR, COUPLING
CAPACITOR, AND 1cm TRACE
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted. PRBS7 + 100CID pattern is PRBS 2
7
, 100 zeros, 1010, PRBS 2
7
, 100 ones, 0101.)