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MAX3991 Datasheet(PDF) 10 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) 10 Page - Maxim Integrated Products

 
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Applications Information
Exposed Pad (EP) Package
The exposed pad, 24-pin QFN incorporates features
that provide a very low thermal-resistance path for heat
removal from the IC. The pad is electrical ground on the
MAX3991 and must be soldered to the circuit board for
proper thermal and electrical performance.
Layout Considerations
For best performance, use good high-frequency layout
techniques. Filter voltage supplies, keep ground con-
nections short, and use multiple vias where possible.
Use controlled-impedance transmission lines to inter-
face with the MAX3991 high-speed inputs and outputs.
Power-supply decoupling should be placed as close to
VCC as possible. To reduce feedthrough, take care to
isolate the input signals from the output signals.
10Gbps Clock and Data Recovery
with Limiting Amplifier
10
______________________________________________________________________________________
Table 3. Functional Control
FCTL1
FCTL2
DESCRIPTION
00
Normal operation, serial clock output
disabled.
10
Standby power-down mode.
01
Serial data output disabled.
11
Serial clock output enabled for jitter
testing.
Figure 5. Reference Clock Termination
MAX3991
MAX3991
MAX3992
50
50
200
200
200
200
REFERENCE
CLOCK
REFERENCE
CLOCK
TRANSCEIVER TERMINATION
RECEIVER-ONLY TERMINATION
50
50
Figure 6. CML Input Model
SDI+
SDI-
VCC
50
50


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