Datasheet
MAX3984
1Gbps to 10Gbps Preemphasis Driver with
Receive Equalizer
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, T
A
= +25°C, PRBS7 + 100 CID pattern is PRBS 2
7
, 100 zeros, 1010, PRBS 2
7
, 100 ones, 0101, OUT_LEV = high, 10in
of FR-4 at the input, IN_LEV = high, 360mV
P-P
at input of FR-4, unless otherwise noted.)
DETERMINISTIC JITTER
vs. FR-4 LENGTH (10.3Gbps)
MAX3984 toc04
FR-4 LENGTH (in)
DETERMINISTIC JITTER (UI)
302010
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
040
IN_LEV = LOW,
0in OF FR-4 AT THE INPUT
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 10
PE[1,0] = 11
DETERMINISTIC JITTER
vs. FR-4 LENGTH (8.5Gbps)
MAX3984 toc05
FR-4 LENGTH (in)
DETERMINISTIC JITTER (UI)
302010
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
040
IN_LEV = LOW,
0in OF FR-4 AT THE INPUT
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 10
PE[1,0] = 11
DETERMINISTIC JITTER
vs. FR-4 LENGTH (5Gbps)
MAX3984 toc06
FR-4 LENGTH (in)
DETERMINISTIC JITTER (UI)
302010
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
040
IN_LEV = LOW,
0in OF FR-4 AT THE INPUT
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 10
PE[1,0] = 11
INPUT RETURN LOSS vs. FREQUENCY
MAX3984 toc07
FREQUENCY (MHz)
DIFFERENTIAL S11 (dB)
1000
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
-50
100 10,000
OUTPUT RETURN LOSS vs. FREQUENCY
MAX3984 toc08
FREQUENCY (MHz)
DIFFERENTIAL S22 (dB)
1000
-35
-30
-25
-20
-15
-10
-5
0
-40
100 10,000
TRANSIENT RESPONSE
MAX3984 toc09
A = 3.5dB, PE = 00
B = 6.5dB, PE = 01
C = 9.5dB, PE = 10
D = 13dB, PE = 11
2.5Gbps K28.7 PATTERN
OUT_LEV = HIGH
A
B
C
D
500ps/div
VERTICAL EYE OPENING
vs. CABLE LENGTH (10.3Gbps)
MAX3984 toc10
CABLE LENGTH (m)
VERTICAL EYE OPENING (mV
P-P
)
987654321
100
200
300
400
500
600
700
0
010
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 10
PE[1,0] = 11
VERTICAL EYE OPENING
vs. CABLE LENGTH (8.5Gbps)
MAX3984 toc11
CABLE LENGTH (m)
VERTICAL EYE OPENING (mV
P-P
)
987654321
100
200
300
400
500
600
700
0
010
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 11
PE[1,0] = 10
VERTICAL EYE OPENING
vs. CABLE LENGTH (5Gbps)
MAX3984 toc12
CABLE LENGTH (m)
VERTICAL EYE OPENING (mV
P-P
)
987654321
100
200
300
400
500
600
700
0
010
PE[1,0] = 00
PE[1,0] = 01
PE[1,0] = 11
PE[1,0] = 10