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SY87701AL

Part Number	SY87701AL
Manufacturer	Micrel Semiconductor
Description	AnyRate Clock and Data Recovery
Published	May 2, 2007
Detailed Description	Micrel, Inc. 3.3V 28Mbps to 1.3Gbps AnyRate® Clock and Data Recovery SY87701AL SY87701AL FEATURES DESCRIPTION s Ind...
Datasheet	SY87701AL PDF File

Overview

Micrel, Inc.
3.
3V 28Mbps to 1.
3Gbps AnyRate® Clock and Data Recovery SY87701AL SY87701AL FEATURES DESCRIPTION s Industrial temperature range (–40°C to +85°C) s 3.
3V power supply s Clock and data recovery from 28Mbps up to 1.
3Gbps NRZ data stream, clock generation from 28Mbps to 1.
3Gbps s Complies with Bellcore, ITU/CCITT and ANSI specifications for applications such as OC-1, OC-3, OC-12, ATM, FDDI, Fibre Channel and Gigabit Ethernet as well as proprietary applications s Two on-chip PLLs: one for clock generation and another for clock recovery s Selectable reference frequencies s Differential PECL high-speed serial I/O s Line receiver input: no external buffering needed s Link fault indication s 100k ECL compatible I/O s Lower power: fully compatible with Micrel's SY87701V, but with 30% less power s Available in 32-pin EPAD-TQFP and 28-pin SOIC packages (28-pin SOIC is available, but NOT recommended for new designs.
) The SY87701AL is a complete Clock Recovery and Data Retiming integrated circuit for data rates from 28Mbps up to 1.
3Gbps NRZ.
The device is ideally suited for SONET/SDH/ATM and Fibre Channel applications and other high-speed data transmission systems.
Clock recovery and data retiming is performed by synchronizing the on-chip VCO directly to the incoming data stream.
The VCO center frequency is controlled by the reference clock frequency and the selected divide ratio.
On-chip clock generation is performed through the use of a frequency multiplier PLL with a byte rate source as reference.
The SY87701AL also includes a link fault detection circuit.
All support documentation can be found on Micrel’s web site at: www.
micrel.
com.
APPLICATIONS s SONET/SDH/ATM OC-1, OC-3, OC-12, OC-24 s Fibre Channel, Escon, SMPTE 259 s Gigabit Ethernet/Fast Ethernet s Proprietary architecture up to 1.
3Gbps BLOCK DIAGRAM PLLR P/N RDINP (PECL) RDINN CD (PECL) REFCLK (TTL) PHASE DETECTOR PHASE/ FREQUENCY DETECTOR 0 1 CHARGE PUMP VCO PHASE/ FREQUENCY DETECTOR CHARGE...

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