Datasheet

MAX3800
3.2Gbps Adaptive Equalizer
and Cable Driver
4 _______________________________________________________________________________________
20
30
25
40
35
50
45
55
65
60
70
020304010 50 60 70 80 90
SUPPLY CURRENT vs. TEMPERATURE
MAX3800 toc01
TEMPERATURE (
°
C)
SUPPLY CURRENT (mA)
DRIVER + EQUALIZER
EQUALIZER
DRIVER
400
600
500
900
800
700
1200
1100
1000
1300
410713161922
CABLE DRIVER OUTPUT VOLTAGE vs. RMOD
MAX3800 toc02
R
MOD
(k
Ω
)
DRIVER OUTPUT VOLTAGE (mV)
-50
-30
-40
-10
-20
10
0
20
40
30
50
0 0.8 1.2 1.60.4 2.0 2.4 2.8 3.63.2 4.0
DRIVER INPUT RETURN LOSS (S11)
MAX3800 toc03
FREQUENCY (GHz)
GAIN (dB)
-50
-30
-40
-10
-20
10
0
20
40
30
50
0 0.8 1.2 1.60.4 2.0 2.4 2.8 3.63.2 4.0
DRIVER OUTPUT RETURN LOSS (S22)
MAX3800 toc04
FREQUENCY (GHz)
GAIN (dB)
30
35
45
40
50
55
0.001 0.10.01 1 10 100
EQUALIZER RESIDUAL JITTER vs. POWER SUPPLY
NOISE (100mVp-p SINE WAVE) (40FT OF MADISON
#14887 SHIELDED TWISTED PAIR-DIFFERENTIAL)
MAX3800 toc05
NOISE FREQUENCY (MHz)
JITTER (ps
p-p
)
40
60
50
80
70
100
90
110
40 50 5545 60 65 70 75 80 85 (INCHES)
EQUALIZER RESIDUAL JITTER vs. LINE LENGTH
(FR-4 6MIL STRIPLINE - SINGLE-ENDED)
MAX3800 toc09
LINE LENGTH
JITTER (ps
p-p
)
3.2Gbps
622Mbps
2.5Gbps
1.02 1.27 1.401.14 1.52 1.65 1.77 1.90 2.03 2.16 (METERS)
20
30
40
50
60
70
80
90
100
10 20 30 40 50 (FEET)
EQUALIZER RESIDUAL JITTER vs.
CABLE LENGTH (MADISON #13887 SHIELDED
TWISTED PAIR-DIFFERENTIAL)
MAX3800 toc07
CABLE LENGTH
JITTER (ps
p-p
)
3.2Gbps
622Mbps
2.5Gbps
3.05 6.1 9.14 12.19 15.24 (METERS)
40
80
60
120
100
140
160
25 55 6535 45 75 85 95 (FEET)
EQUALIZER RESIDUAL JITTER vs.
CABLE LENGTH (RG179B 75Ω COAXIAL
CABLE - SINGLE-ENDED)
MAX3800 toc08
CABLE LENGTH
JITTER (ps
p-p
)
3.2Gbps
622Mbps
2.5Gbps
7.65 16.76 19.8110.67 13.72 22.86 25.91 28.96 (METERS)
70
80
100
90
120
130
110
140
300 500 600400 700 800 900 1000 1100
EQUALIZER RESIDUAL JITTER vs. CABLE
INPUT AMPLITUDE (RG179B 75Ω
COAXIAL CABLE - SINGLE-ENDED)
MAX3800 toc06
CABLE INPUT AMPLITUDE (mV)
JITTER (ps
p-p
)
25 FT
72 FT
Typical Operating Characteristics
(T
A
= +25°C, V
CC
= +3.3V, all jitter measurements done at 3.2Gbps, 700mV cable input with 2
13
-1 PRBS pattern with 100 consecutive
ones and 100 consecutive zeros substituted. Note: Test pattern produces near worst-case jitter results. Results will vary with pattern,
unless otherwise noted.)