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MAX3991 Datasheet(PDF) 7 Page - Maxim Integrated Products

Part No. MAX3991
Description  10Gbps Clock and Data Recovery with Limiting Amplifier
Download  12 Pages
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX3991 Datasheet(HTML) 7 Page - Maxim Integrated Products

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10Gbps Clock and Data Recovery
with Limiting Amplifier
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(VCC = 3.3V, TA = +25
°C, unless otherwise noted.)
SDD22 vs. FREQUENCY
FREQUENCY (mHz)
10G
1G
-20
-15
-10
-5
0
5
10
-25
-30
-35
-40
100M
100G
XFI
FREQUENCY (Hz)
10G
1G
-30
-25
20
-15
-10
-5
0
-35
100M
100G
SCC22 vs. FREQUENCY
XFI
0
80
60
40
20
120
100
140
160
0400
600
200
800 1000 1200 1400 1600
LOS ASSERT/DEASSERT LEVELS
vs. VTH VOLTAGE
VTH VOLTAGE (mV)
DEASSERT THRESHOLD
ASSERT THRESHOLD
PIN
NAME
FUNCTION
1, 6, 11, 13, 18
VCC
+3.3V Power Supply
2, 5, 14, 17
GND
Supply Ground
3
SDI+
Positive Serial Input, CML
4
SDI-
Negative Serial Input, CML
7
SCLKO+
Positive Clock Output, CML. See Table 3 for information about enabling the SCLKO output (for use
in device testing).
8
SCLKO-
Negative Clock Output, CML. See Table 3 for information about enabling the SCLKO output (for use
in device testing).
9
FCTL2
Function Control Input 2, TTL. See Table 3 for more information.
10
POL
Data Polarity Control Input, TTL. Connect to VCC or leave open to maintain the same polarity as the
input. Connect to GND to invert the polarity of the data.
12
CFIL
Loop-Filter Capacitor Connection. Connect a 0.047µF capacitor between CFIL and VCC.
15
SDO-
Negative Serial Data Output, CML
16
SDO+
Positive Serial Data Output, CML
19
LOL
Lock Status Indicator, TTL. This output goes high to indicate the receiver is out of lock.
20
LOS
Receiver Loss-of-Signal Indicator, TTL . This output goes high when the input signal drops below
the programmed threshold.
Pin Description


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