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Part: MAX3676EHJEVKIT
Category:
Others
Description: Max3675/max3676 Evaluation Kits
Company: Maxim Integrated Products
Datasheet: Download MAX3676EHJEVKIT datasheet File size : 325 kB
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Datasheet text preview:
19-1537; Rev 2; 12/01
622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier
_____________________ General Description
The MAX3676 is a complete clock-recovery and dataretiming IC incorporating a limiting amplifier. It is intended 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 transm i s s i o n systems. Its jitter performance exceeds all SONET/SDH specifications. The MAX3676 has two differential input amplifiers: one a c c e p t s positive-referenced emitter-coupled logic (PECL) levels, while the other accepts small-signal analog levels. The analog inputs access the limiting amplifier stage, which provides both a received-signal-strength indicator (RSSI) and a programmable-threshold loss-ofpower (LOP) monitor. Selecting the PECL amplifier disa b l e s the limiting amplifier, conserving power. A loss-of-lock (LOL) monitor is also incorporated as part of the fully integrated phase-locked loop (PLL).
____________________________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
MAX3676
_________________Ordering Information
PART TEMP. RANGE PIN-PACKAGE MAX3676EHJ -40°C to +85°C 5mm 32 TQFP MAX3676E/D -40°C to +85°C Dice* * 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. Pin Configuration appears at end of data sheet.
________________________Applications
SDH/SONET Receivers and Regenerators SDH/SONET Access Nodes Add/Drop Multiplexers ATM Switches Digital Cross-Connects
___________________________________________________ Typical Operating Circuit
+3.3V +3.3V 0.1µF INSEL VCC CIN 0.01µF ZO = 50 100 IN OUTGND COMP 220pF CFILT OLC+ OLC- GND CF 47nF COLC 33nF R2 R1 20k RSSI INV VTH LOP ZO = 50 82 82 ZO = 50 C +3.3V IN 0.01µF VCC ADISCLKO+ 130 SCLKOZO = 50 130 ADI+ DDI+ DDISDO100pF PHOTODIODE 82 82 PHADJ+ PHADJFIL+ FILLOL SDO+ ZO = 50 ZO = 50 2.2µF CLOL 0.01µF 130 +3.3V
130
0.01µF
FILT
MAX3664
INREF OUT+
MAX3676
+3.3V
________________________________________________________________ Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier MAX3676
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC....-0.5V to +6.5V Input Voltage Levels, DDI+, DDI-, ADI+, ADI- ...-0.5V to (VCC + 0.5V) Input Differential Voltage (ADI+) - (ADI-).......±3V PECL Output Currents, SDO+, SDO-, SCLKO+, SCLKO-...100mA LOL, LOP, INSEL, PHADJ+, PHADJ- .........-0.5V to (VCC + 0.5V) FIL+, FIL-, OLC+, OLC-, RSSI, VTH ..-0.5V to (VCC + 0.5V) (OLC+) - (OLC-)............±3V (FIL+) - (FIL-) .........±700mV CFILT .....(VCC - 2.5V) to (VCC + 0.5V) INV .......-0.5V to +2.0V Continuous Power Dissipation (TA = +85°C) TQFP (derate 11.1mW/°C above +85°C) ............721mW Operating Junction Temperature Range ..-40°C to +150°C Storage Temperature Range .....-65°C to +150°C Processing Temperature (die) ........+400°C Lead Temperature (soldering, 10sec) .....+300°C
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
(VCC = +3.0V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2) PARAMETER Supply Current PECL Input Voltage High PECL Input Voltage Low PECL Input Current High PECL Input Current Low PECL Output Voltage High PECL Output Voltage Low LOP, LOL Voltage High LOP, LOL Voltage Low INV Input Bias Voltage SYMBOL ICC VIH VIL IIH IIL VOH VOL VOH VOL 4k between INV and VTH TA = 0°C to +85°C TA = -40°C TA = 0°C to +85°C TA = -40°C CONDITIONS MAX3676EHJ, PECL outputs unterminated INSEL = VCC INSEL = GND VCC - 1.16 VCC - 1.81 -10 -10 VCC - 1.025 VCC - 1.085 VCC - 1.81 VCC - 1.83 2.4 0.1 1.10 1.23 0.4 1.30 MIN TYP 72 51 MAX 111 mA 81 VCC - 0.88 VCC - 1.48 10 10 VCC - 0.88 VCC - 0.88 VCC - 1.620 VCC - 1.555 V V µA µA V V V V V UNITS
Note 1: Dice are tested at Tj = +45°C, VCC = +4.25V. Note 2: At TA = -40°C, DC characteristics are guaranteed by design and characterization.
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622Mbps, 3.3V Clock-Recovery and Data-Retiming IC with Limiting Amplifier
AC ELECTRICAL CHARACTERISTICS
(VCC = +3.0V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V and TA = +25°C.) (Notes 3, 4) PARAMETER Differential Input Voltage Range Input-Referred Noise Power-Detect Hysteresis Limiting Amplifier SmallSignal Bandwidth RSSI Output Voltage Threshold Voltage LOP Threshold Accuracy RSSI Linearity RSSI Slope Loop Bandwidth Jitter Generation (Note 10) Jitter-Transfer Peaking VTH BW SYMBOL VID VN CONDITIONS BER < 10-10, ADI inputs (Note 5) ADI inputs (Notes 6, 7) (Note 8) (ADI+) - (ADI-) = 2mVp-p (ADI+) - (ADI-) = 20mVp-p (Note 7) (Note 7) (ADI+) - (ADI-) = 2mVp-p to 50mVp-p (ADI+) - (ADI-) = 2mVp-p to 50mVp-p (Note 9) CF = 2.2µF CF = 2.2µF CF = 2.2µF f = 10kHz Jitter Tolerance (Note 11) CF = 2.2µF f = 25kHz f = 250kHz f = 1MHz Maximum Consecutive Input Run Length (1 or 0) Clock Transition Time Data Transition Time Serial Clock-to-Q Delay Serial Clock Frequency tr, tf tr, tf tCLK-Q fSCLK 20% to 80% 20% to 80% 140 (Note 12) 0.55 0.45 -2 ±0.7 26 250 2.0 0.03 8.9 3.64 0.77 0.69 1200 205 180 275 622.08 245 230 400 Bits ps ps ps MHz UI 500 2.6 0.08 3 650 1.40 1.93 1.41 +2 MIN 0.003 80 6 TYP MAX 1.2000 UNITS Vp-p µVRMS dB MHz V V dB % mV/dB kHz mUI dB
MAX3676
Note 3: AC parameters are guaranteed by design and characterization. Note 4: The MAX3676 is characterized with a PRBS of 223 - 1 maintaining a BER of 10-10 having a confidence level of 99.9%. Note 5: A lower minimum input voltage of 2mVp-p is achievable; however, the LOP hysteresis is not guaranteed below 3.6mVp-p. Note 6: Hysteresis = 20log(VRELEASE / VASSERT). Note 7: R1 = 20k, R2 = 3.0k, resulting in VRELEASE 3.6mVp-p. Note 8: Small-signal bandwidth cannot be measured directly. Note 9: RSSI slope = [VRSSI2 - VRSSI1] / [20log (VID2 / VID1)]. Note 10: 1UI = 1 unit interval = (622.08MHz)-1 = 1.608ns. Note 11: At jitter frequencies <10kHz, the jitter tolerance characteristics exceed the ITU/Bellcore specifications. The low-frequency jitter tolerance outperforms the instrument's measurement capability. Note 12: See Typical Operating Characteristics for worst-case distribution.
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