MAX3676 19-1537 Rev 4 3/09 622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier General Description Features The MAX3676 is a complete clock-recovery and data- Single +3.3V or +5.0V Power Supply retiming IC incorporating a limiting amplifier. It is intend- Exceeds ITU/Bellcore SDH/SONET Regenerator ed for 622Mbps SDH/SONET applications and operates Specifications from a single +3.3V supply. Low Power: 237mW at +3.3V The MAX3676 is designed for both section-regenerator and terminal-receiver applications in OC12/STM-4 trans- Selectable Data Inputs, Differential PECL or mission systems. Its jitter performance exceeds all Analog SONET/SDH specifications. Received-Signal-Strength Indicator The MAX3676 has two differential input amplifiers: one Loss-of-Power and Loss-of-Lock Monitors accepts positive-referenced emitter-coupled logic Differential PECL Clock and Data Outputs (PECL) levels, while the other accepts small-signal ana- log levels. The analog inputs access the limiting amplifi- No External Reference Clock Required er stage, which provides both a received-signal-strength indicator (RSSI) and a programmable-threshold loss-of- Ordering Information power (LOP) monitor. Selecting the PECL amplifier dis- ables the limiting amplifier, conserving power. A PART TEMP RANGE PIN-PACKAGE loss-of-lock (LOL) monitor is also incorporated as part of MAX3676EHJ -40C to +85C 32 TQFP the fully integrated phase-locked loop (PLL). MAX3676EHJ+ -40C to +85C 32 TQFP Applications +Denotes a lead(Pb)-free/RoHS-compliant package. SDH/SONET Receivers and Regenerators SDH/SONET Access Nodes Pin Configuration appears at end of data sheet. Add/Drop Multiplexers ATM Switches Digital Cross-Connects Typical Operating Circuit +3.3V C LOL C +3.3V F 0.01F 2.2F +3.3V 130 130 0.1F 0.01F Z = 50 O INSEL PHADJ+ PHADJ- FIL+ FIL- LOL DDI+ SDO+ Z = 50 O V CC FILT DDI- SDO- 82 82 C IN 100pF MAX3664 0.01F INREF PHOTO- OUT+ Z = 50 O ADI+ MAX3676 DIODE +3.3V 100 IN SCLKO+ Z = 50 ADI- OUT- O 130 130 C IN +3.3V 0.01F SCLKO- GND COMP Z = 50 O V CC 220pF Z = 50 CFILT OLC+ OLC- GND RSSI INV VTH LOP O C FILT 47nF 82 82 C OLC R2 33nF R1 20k Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ..............................................-0.5V to +6.5V CFILT...............................................(V - 2.5V) to (V + 0.5V) CC CC CC Input Voltage Levels, INV.........................................................................-0.5V to +2.0V DDI+, DDI-, ADI+, ADI-...........................-0.5V to (V + 0.5V) Continuous Power Dissipation (T = +85C) CC A Input Differential Voltage (ADI+) - (ADI-)...............................3V TQFP (derate 18.7mW/C above +85C)................1214.8mW PECL Output Currents, SDO+, SDO-, SCLKO+, SCLKO-...100mA Operating Junction Temperature Range...........-40C to +150C LOL, LOP, INSEL, PHADJ+, PHADJ-.........-0.5V to (V + 0.5V) Storage Temperature Range .............................-65C to +150C CC FIL-, OLC+, OLC-, RSSI, VTH ....................-0.5V to (V + 0.5V) Processing Temperature (die) .........................................+400C CC (OLC+) - (OLC-).....................................................................3V Lead Temperature (soldering, 10sec) .............................+300C FIL+..................................................Internally connected to V CC Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (V = +3.0V to +5.5V, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) CC A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS MAX3676EHJ, INSEL = V 72 111 CC Supply Current I PECL outputs mA CC INSEL = GND 51 81 unterminated PECL Input-Voltage High V V - 1.16 V - 0.88 V IH CC CC PECL Input-Voltage Low V V - 1.81 V - 1.48 V IL CC CC PECL Input-Current High I -10 10 A IH PECL Input-Current Low I -10 10 A IL T = 0C to +85C V - 1.025 V - 0.88 A CC CC PECL Output-Voltage High V V OH T = -40C V - 1.085 V - 0.88 A CC CC T = 0C to +85C V - 1.81 V - 1.620 A CC CC PECL Output-Voltage Low V V OL T = -40C V - 1.83 V - 1.555 A CC CC LOP, LOL Voltage High V 2.4 V OH LOP, LOL Voltage Low V 0.4 V OL INV Input Bias Voltage 4k between INV and VTH 1.10 1.23 1.30 V Note 1: At T = -40C, DC characteristics are guaranteed by design and characterization. A 2 MAX3676