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MAX3676 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX3676
Description  622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX3676 Datasheet(HTML) 1 Page - Maxim Integrated Products

 
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___________________________________________________ Typical Operating Circuit
_____________________General Description
The MAX3676 is a complete clock-recovery and data-
retiming IC incorporating a limiting amplifier. It is intend-
ed for 622Mbps SDH/SONET applications and operates
from a single +3.3V supply.
The MAX3676 is designed for both section-regenerator
and terminal-receiver applications in OC12/STM-4 trans-
mission systems. Its jitter performance exceeds all
SONET/SDH specifications.
The MAX3676 has two differential input amplifiers: one
accepts positive-referenced emitter-coupled logic
(PECL) levels, while the other accepts small-signal ana-
log levels. The analog inputs access the limiting amplifi-
er stage, which provides both a received-signal-strength
indicator (RSSI) and a programmable-threshold loss-of-
power (LOP) monitor. Selecting the PECL amplifier dis-
ables the limiting amplifier, conserving power. A
loss-of-lock (LOL) monitor is also incorporated as part of
the fully integrated phase-locked loop (PLL).
________________________Applications
SDH/SONET Receivers and Regenerators
SDH/SONET Access Nodes
Add/Drop Multiplexers
ATM Switches
Digital Cross-Connects
____________________________Features
o Single +3.3V or +5.0V Power Supply
o Exceeds ITU/Bellcore SDH/SONET Regenerator
Specifications
o Low Power: 237mW at +3.3V
o Selectable Data Inputs, Differential PECL or
Analog
o Received-Signal-Strength Indicator
o Loss-of-Power and Loss-of-Lock Monitors
o Differential PECL Clock and Data Outputs
o No External Reference Clock Required
622Mbps, 3.3V Clock-Recovery and
Data-Retiming IC with Limiting Amplifier
________________________________________________________________
Maxim Integrated Products
1
VCC
ZO = 50Ω
100
20k
INREF
FILT
OUT+
CIN
0.01
µF
CIN
0.01
µF
COLC
33nF
CF
47nF
+3.3V
220pF
100pF
PHOTO-
DIODE
ADI+
DDI-
DDI+
SDO+
SDO-
0.1
µF
CLOL
0.01
µF
0.01
µF
ADI-
CFILT OLC+ OLC-
R1
R2
GND
RSSI
INV
VTH LOP
INSEL
PHADJ+
PHADJ-
FIL+
2.2
µF
FIL-
OUT-
GND
COMP
IN
ZO = 50Ω
+3.3V
VCC
SCLKO+
SCLKO-
ZO = 50Ω
ZO = 50Ω
+3.3V
+3.3V
82
82
130
130
ZO = 50Ω
ZO = 50Ω
+3.3V
82
82
130
130
LOL
MAX3676
MAX3664
19-1537; Rev 0; 7/99
PART
TEMP. RANGE
PIN-PACKAGE
_________________Ordering Information
Pin Configuration appears at end of data sheet.
*Contact factory for availability. Dice are designed to operate
over a -40°C to +140°C junction temperature (Tj) range, but are
tested and guaranteed at Tj = +45°C.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX3676EHJ
-40°C to +85°C
5mm 32 TQFP
MAX3676E/D
-40°C to +85°C
Dice*


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