
6 ______________________________________________________________________________________
MAX9249
Gigabit Multimedia Serial Link
Serializer with LVDS System Interface
Typical Operating Characteristics
(V
DVDD
= V
AVDD
= V
IOVDD
= 1.8V, V
LVDSVDD
= 3.3V, T
A
= +25NC, unless otherwise noted.)
TOTAL SUPPLY CURRENT
vs. RXCLKIN_ FREQUENCY
(3-CHANNEL MODE)
MAX9249 toc01
RXCLKIN FREQUENCY (MHz)
TOTAL SUPPLY CURRENT (mA)
85654525
120
130
PREEMP = 0x01 TO 0x04
PREEMP = 0x00
140
150
160
170
110
5 105
PREEMP = 0x0B TO 0x0F
PRBS PATTERN
TOTAL SUPPLY CURRENT
vs. RXCLKIN_ FREQUENCY
(4-CHANNEL MODE)
MAX9249 toc02
RXCLKIN FREQUENCY (MHz)
TOTAL SUPPLY CURRENT (mA)
65503520
125
130
135
140
145
150
155
160
165
120
0
PRBS PATTERN
PREEMP = 0x0B TO 0x0F
PREEMP = 0x01 TO 0x04
PREEMP = 0x00
OUTPUT POWER SPECTRUM
vs. RXCLKIN_ FREQUENCY
MAX9249 toc03
RXCLKIN FREQUENCY (MHz)
OUTPUT POWER SPECTRUM (dBm)
34.533.532.531.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
30.5 35.5
f
RXCLKIN_
= 33MHz
0% SPREAD
2% SPREAD 4% SPREAD
0.5% SPREAD
MAXIMUM PCLK FREQUENCY
vs. STP CABLE LENGTH (BER < 10
-9
)
MAX9249 toc05
STP CABLE LENGTH (m)
MAXIMUM PCLK FREQUENCY (MHz)
15105
20
40
60
80
100
120
0
0
OPTIMUM PE/EQ
SETTINGS
NO PE, EQS = LOW
NO PE, EQS = LOW
BER CAN BE AS LOW AS 10
-12
FOR
CABLE LENGTHS LESS THAN 10m
OUTPUT POWER SPECTRUM
vs. RXCLKIN_ FREQUENCY
MAX9249 toc04
RXCLKIN FREQUENCY (MHz)
OUTPUT POWER SPECTRUM (dBm)
17.517.016.516.015.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
15.0 18.0
f
RXCLKIN_
= 16.5MHz
0% SPREAD
2% SPREAD
4% SPREAD
0.5% SPREAD
MAXIMUM RXCLKIN_ FREQUENCY
vs. 10m STP CABLE C
L
(BER < 10
-9)
MAX9249 toc06
STP CABLE LOAD CAPACITANCE (pF)
MAXIMUM RXCLKIN FREQUENCY (MHz)
8642
20
40
60
80
100
120
0
0
NO PE, EQS = LOW
NO PE, EQS = HIGH
OPTIMUM PE/EQ SETTINGS
BER CAN BE AS LOW AS 10
-12
FOR
C
L
< 4pF FOR OPTIMUM PE/EQ SETTINGS
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