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MAX3675EHJ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3675EHJ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 16 page ___________________________________________________ Typical Operating Circuit _____________________General Description 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 SDH/SONET Transmission Systems SDH/SONET Access Nodes Add/Drop Multiplexers ATM Switches Digital Cross-Connects ____________________________Features o Single +3.3V or +5.0V Power Supply o Complies with ANSI, ITU, and Bellcore SDH/SONET Specifications o Low Power: 215mW at +3.3V o Selectable Data Inputs, Differential PECL or Analog o Received-Signal-Strength Indicator (RSSI) o Loss-of-Power and Loss-of-Lock Monitors o Differential PECL Clock and Data Outputs o No External Reference Clock Required 622Mbps, Low-Power, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier ________________________________________________________________ Maxim Integrated Products 1 VCC ZO = 50Ω 100 Ω 100k 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 LOL INSEL PHADJ+ PHADJ- FIL+ 52.3 Ω 1% 2.2 µF FIL- OUT- GND COMP IN ZO = 50Ω +3.3V VCC SCLKO+ SCLKO- ZO = 50Ω ZO = 50Ω +3.3V +3.3V 82 Ω 82 Ω 130 Ω 130 Ω ZO = 50Ω ZO = 50Ω +3.3V 82 Ω 82 Ω 130 Ω 130 Ω MAX3675 MAX3664 19-1258; Rev 2; 11/98 PART MAX3675ECJ -40°C to +85°C TEMP. RANGE PIN-PACKAGE 32 TQFP _________________Ordering Information Pin Configuration appears at end of data sheet. *Contact factory for availability. Dice are designed to operate from -40°C to +85°C, but are tested and guaranteed only 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. EVALUATION KIT MANUAL AVAILABLE MAX3675EHJ -40°C to +85°C 5mm 32 TQFP MAX3675E/D -40°C to +85°C Dice* |
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