Rainbow Electronics MAX3805 - Manual (Page 4)

MAX3805
10.7Gbps Adaptive Receive Equalizer
4 _______________________________________________________________________________________
EQUALIZER OUTPUT EYE AFTER 30in OF FR-4
(CJTPAT 10.0Gbps LFPD/(HFPD + LFPD) = 0.6)
MAX3805 toc04
20ps/div
65mV/div
EQUALIZER OUTPUT EYE AFTER
24ft OF RG-188/U COAXIAL CABLE,
SINGLE ENDED (2 23 - 1PRBS AT 10.7Gbps)
MAX3805 toc05
20ps/div
65mV/div
RESIDUAL JITTER vs. AMPLITUDE
MAX3805 toc07
AMPLITUDE (mV P-P )
RESIDUAL JITTER (ps)
1100 1000 900 800 700 600 500
25
30
35
40
45
50
15
400 1200
DATA RATE = 9.953Gbps
PATTERN = PRBS 2 10 -1
RESIDUAL JITTER = DJ + 14.1 x RJ
20
FR4 = 30in
FR4 = 18in
15
25
20
35
30
45
40
50
3 9 12 6 15 18 21 24 27 30
RESIDUAL JITTER
vs. FR-4 PATH LENGTH
MAX3805 toc08
FR-4 PATH LENGTH (in)
RESIDUAL JITTER
RESIDUAL JITTER = DJ + 14.1 x RJ
DATA RATE = 10.7Gbps
PATTERN = PRBS 2
10 -1
V IN = 400mV P-P
10
15
20
25
30
35
40
45
50
6 7 8 9 10 11
RESIDUAL JITTER vs. DATA RATE
MAX3805 toc09
DATA RATE (Gbps)
RESIDUAL JITTER (ps)
V IN = 400mV P-P
PATTERN = 100 1's PRBS 2 10 -1
100 0's PRBS 2 10 -1
RESIDUAL JITTER = DJ + 14.1 x RJ
30in FR4
18in FR4
35
45
40
55
50
60
65
-40 -20 0 20 40 60 80
SUPPLY CURRENT vs. TEMPERATURE
MAX3805 toc06
TEMPERATURE ( °C)
SUPPLY CURRENT (mA)
V CC = V CC1 = V CC2 = +3.3V
RESIDUAL JITTER
vs. R LFPD /(R HFPD + R LFPD )
MAX3805 toc10
R LFPD /(R HFPD + R LFPD )
RESIDUAL JITTER (ps)
0.8 0.7 0.6
20
25
30
35
40
45
15
0.5 0.9
30in FR4
V IN = 400mV P-P
PATTERN = CJTPAT
DATA RATE = 10.0Gbps
(R
LFPD + R HFPD ) = 100k Ω
18in FR4
RESIDUAL JITTER = DJ + 14.1 x RJ
50
Typical Operating Characteristics (continued)
(V CC = 3.3V, V CC1 = 1.8V, V CC2 = 1.8V, and T A = +25 °C, unless otherwise noted.)