MAX3882A 19-2718 Rev 2 4/09 2.488Gbps 1:4 Demultiplexer with Clock and Data Recovery and Limiting Amplifier General Description Features The MAX3882A is a deserializer combined with clock No Reference Clock Required for Data Acquisition and data recovery and limiting amplifier ideal for con- Serial Input Rate: 2.488Gbps verting 2.488Gbps serial data to 4-bit-wide, 622Mbps Fully Integrated Clock and Data Recovery with parallel data for SDH/SONET applications. The device Limiting Amplifier and 1:4 Demultiplexer accepts serial NRZ input data as low as 10mV of P-P 2.488Gbps and generates four parallel LVDS data out- Parallel Output Rate: 622Mbps puts at 622Mbps. Included is an additional high-speed Differential Input Range: 10mV to 1.6V P-P P-P serial data input for system loopback diagnostic test- without Threshold Adjust ing. For data acquisition, the MAX3882A does not Differential Input Range: 50mV to 600mV P-P P-P require an external reference clock. However, if need- with Threshold Adjust ed, the loopback input can be connected to an external reference clock of 155MHz or 622MHz to maintain a 0.65UI High-Frequency Jitter Tolerance valid clock output in the absence of input data transi- Loss-of-Lock (LOL) Indicator tions. Additionally, a TTL-compatible loss-of-lock output Wide Input Threshold Adjust Range: 170mV is provided. The device provides a vertical threshold adjustment to compensate for optical noise generated Maintain Valid Clock Output in Absence of Data by EDFAs in WDM transmission systems. The Transitions MAX3882A operates from a single +3.3V supply and System Loopback Input Available for System consumes 610mW. Diagnostic Testing The MAX3882As jitter performance exceeds all SDH/ Operating Temperature Range -40C to +85C SONET specifications. The device is available in a 6mm Low Power Dissipation: 610mW at +3.3V 6mm, 36-pin TQFN package. Applications Ordering Information SDH/SONET Receivers and Regenerators PART TEMP RANGE PIN-PACKAGE MAX3882AETX+ -40C to +85C 36 TQFN-EP* Add/Drop Multiplexers +Denotes a lead(Pb)-free/RoHS-compliant package. Digital Cross-Connects *EP = Exposed pad. SDH/SONET Test Equipment Pin Configuration DWDM Transmission Systems TOP VIEW 27 26 25 24 23 22 21 20 19 V OUT 28 18 PCLK+ CC GND 29 17 PCLK- FREFSET 30 16 GND V 31 15 V OUT CC CC Typical Application Circuits appear at end of data sheet. V 32 14 V VCO CC CC MAX3882A CAZ+ 33 13 FIL CAZ- 34 12 V VCO CC V 35 11 GND REF *EP V 10 LREF CTRL 36 + 12 34 56 7 8 9 TQFN *EXPOSED PAD. 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. PD3+ GND V PD3- CC SDI+ PD2+ SDI- PD2- V GND CC SLBI+ PD1+ SLBI- PD1- SIS PD0+ LOL PD0-2.488Gbps 1:4 Demultiplexer with Clock and Data Recovery and Limiting Amplifier ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ................................................-0.5 to +5.0V Continuous Power Dissipation (T = +70C) CC A Input Voltage Levels 36-Pin TQFN (derate 35.7mW/C above +70C) ......2856mW (SDI+, SDI-, SLBI+, SLBI-) ...........(V - 1.0V) to (V + 0.5V) Operating Temperature Range ...........................-40C to +85C CC CC Input Current Levels (SDI+, SDI-, SLBI+, SLBI-)..............20mA Storage Temperature Range .............................-55C to +150C LVDS Output Voltage Levels Lead Temperature (soldering, 10s) .................................+300C (PCLK, PD ).......................................-0.5V to (V + 0.5V) CC Voltage at LOL, SIS, LREF, V , FIL, CAZ+, REF CAZ-, V , FREFSET ..........................-0.5V to (V + 0.5V) CTRL 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 = +3.0 to +3.6V, T = -40C to +85C. Typical values are at +3.3V and at T = +25C, unless otherwise noted.) (Note 1) CC A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Current I 185 230 mA CC Single-Ended Input Voltage V - V + CC CC V Figure 1 V IS Range 0.8 0.4 Input Common-Mode Voltage V - CC Figure 1 V V CC Range 0.4 Input Termination to V R 42.5 50 57.5 CC IN Differential Input Voltage Range with Threshold Adjust Enabled Figure 2 100 600 mV P-P SDI+, SDI- Threshold Adjustment Range V Figure 2 -170 +170 mV TH Threshold-Control Voltage V (Note 2) 0.302 2.097 V CTRL Threshold-Control Linearity 5 % Threshold Setting Accuracy Figure 2 -18 +18 mV 15mV V 80mV -6 +6 TH Threshold Setting Stability mV 80mV < V 170mV -12 +12 TH V Voltage Output R = 50k 2.14 2.2 2.24 V REF L LVDS Output High Voltage V 1.475 V OH LVDS Output Low Voltage V 0.925 V OL LVDS Differential Output Voltage V 250 400 mV OD LVDS Change in Magnitude of Differential Output Voltage for V 25 mV OD Complementary States LVDS Offset Output Voltage 1.125 1.275 V LVDS Change in Magnitude of Output Offset Voltage for V 25 mV OS Complementary States 2 MAX3882A