MAX3675ECJ Maxim, MAX3675ECJ Datasheet
MAX3675ECJ
Manufacturer Part Number
MAX3675ECJ
Description
622Mbps / Low-Power / 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier
Manufacturer
Maxim
Datasheet
1.MAX3675ECJ.pdf
(16 pages)
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The MAX3675 is a complete clock-recovery and data-
retiming IC incorporating a limiting amplifier. It is
intended for 622Mbps SDH/SONET applications and
operates from a single +3.3V supply.
The MAX3675 has two differential input amplifiers: one
accepts PECL levels, while the other accepts small-sig-
nal analog levels. The analog inputs access the limiting
amplifier stage, which provides both a received-signal-
strength indicator (RSSI) and a programmable-threshold
loss-of-power (LOP) monitor. Selecting the PECL amplifier
disables the limiting amplifier, conserving power. A loss-
of-lock (LOL) monitor is also incorporated as part of the
fully integrated PLL.
________________________Applications
19-1258; Rev 2; 11/98
_____________________ General Description
Pin Configuration appears at end of data sheet.
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.
___________________________________________________ Typical Operating Circuit
and Data-Retiming IC with Limiting Amplifier
PHOTO-
DIODE
100pF
SDH/SONET Transmission Systems
SDH/SONET Access Nodes
Add/Drop Multiplexers
ATM Switches
Digital Cross-Connects
622Mbps, Low-Power, 3.3V Clock-Recovery
________________________________________________________________ Maxim Integrated Products
FILT
INREF
IN
GND
MAX3664
COMP
+3.3V
V
OUT+
CC
OUT-
220pF
0.01 F
Z
Z
O
O
= 50
= 50
+3.3V
100
0.01 F
0.01 F
47nF
C
C
C
IN
IN
F
0.1 F
CFILT OLC+ OLC-
DDI+
DDI-
ADI+
ADI-
V
CC
INSEL
+3.3V
LOL
C
33nF
OLC
____________________________Features
_________________Ordering Information
*Contact factory for availability. Dice are designed to operate
PHADJ+ PHADJ- FIL+
from -40°C to +85°C, but are tested and guaranteed only at
T j = +45°C.
MAX3675ECJ
MAX3675EHJ
MAX3675E/D
Single +3.3V or +5.0V Power Supply
Complies with ANSI, ITU, and Bellcore
SDH/SONET Specifications
Low Power: 215mW at +3.3V
Selectable Data Inputs, Differential PECL or
Analog
Received-Signal-Strength Indicator (RSSI)
Loss-of-Power and Loss-of-Lock Monitors
Differential PECL Clock and Data Outputs
No External Reference Clock Required
GND
MAX3675
C
0.01 F
PART
LOL
RSSI
INV
52.3
100k
R1
1%
R2
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
VTH LOP
2.2 F
SCLKO+
SCLKO-
SDO+
FIL-
SDO-
Z
Z
Z
Z
O
O
O
O
= 50
= 50
= 50
= 50
82
82
32 TQFP
5mm 32 TQFP
Dice*
130
130
PIN-PACKAGE
+3.3V
+3.3V
82
82
130
130
1
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