MAX3785 データシートの表示（PDF） - Maxim Integrated
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MAX3785 Datasheet PDF : 8 Pages
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6.25Gbps, 1.8V PC Board Equalizer
PARAMETER
CONDITIONS
Supply Voltage (VCC)
Operating Ambient Temperature (UBL, UTT)
10Hz ≤ f < 100Hz
Supply Noise Tolerance
100Hz ≤ f < 1MHz
1MHz ≤ f ≤ 1GHz
Bit Rate
NRZ data
Operating Ambient Temperature (ITT)
Operating Conditions
MIN TYP MAX UNITS
1.71
1.8
1.89
V
0
25
85
°C
100
40
mVP-P
10
2.50
6.25 Gbps
-20
25
85
°C
SIGNAL SOURCE
A
<1.0pF SMA
CONNECTOR
PC BOARD
3in ≤ L ≤ 30in
Figure 1. Conditions of Testing
<1.0pF SMA
CONNECTOR
B
C
IN MAX3785 OUT
FR-4
4.0 < εr < 4.4
tanδ = 0.022
Typical Operating Characteristics
(VCC = +1.8V, TA = +25°C, unless otherwise noted. Measurements done at 6.25Gbps, 500mVP-P at the source with a test pattern:
PRBS (27), ninety-six 0s, 1, 0, 1, 0, PRBS (27), ninety-six 1s, 0, 1, 0, 1. Deterministic jitter of the MAX3785 and the board was mea-
sured using Tektronix’s FrameScan™. Deterministic jitter of the system was subtracted from the measured value. Eye diagrams were
acquired by FrameScan, which includes system jitter but eliminates random jitter.)
EYE DIAGRAM OF UNEQUALIZED
SIGNAL AFTER 30in OF FR-4
MAX3785 toc01
EYE DIAGRAM OF EQUALIZED
SIGNAL AFTER 30in OF FR-4
MAX3785 toc02
EYE DIAGRAM OF EQUALIZED
SIGNAL AFTER 30in OF FR-4
MAX3785 toc03
70mV/div
70mV/div
70mV/div
30ps/div
TEST PATTERN, 6.25Gbps,
WITHOUT RANDOM JITTER,
INCLUDING 13ps SYSTEM JITTER
30ps/div
TEST PATTERN, 6.25Gbps,
WITHOUT RANDOM JITTER,
INCLUDING 13ps SYSTEM JITTER
30ps/div
210 - 1 PRBS, 6.25Gbps,
WITHOUT RANDOM JITTER,
INCLUDING 13ps SYSTEM JITTER
FrameScan is a trademark of Tektronix.
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