EVALUATION KIT AVAILABLE MAX3747A/MAX3747B 155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifiers General Description Features The MAX3747A/MAX3747B multirate limiting amplifiers Pin Compatible with Micrel SY88993V function as data quantizers for OC-3 through OC-48 syn- 155Mbps to 3.2Gbps Operation chronous optical network (SONET), Fibre-Channel, and Gigabit Ethernet optical receivers. They are pin-for-pin > 57dB of Gain compatible with the SY88993V from Micrel - 12 < 10 BER with 2mV Input Amplitude P-P Semiconductor, Inc. The amplifiers accept a wide range of input voltages and provide constant-level, current- 18mA Supply Current mode logic (CML) output voltages with controlled edge Chatter-Free LOS with Programmable Threshold speeds. The MAX3747A/MAX3747B output voltages are 800mV . The MAX3747B has enhanced LOS operation P-P Output DISABLE Function under overload conditions. PECL-Compatible Inputs The MAX3747A/MAX3747B limiting amplifiers feature a programmable loss-of-signal detect (LOS) and an optional disable function (DISABLE) that can be com- Ordering Information bined to implement squelch. The MAX3747A/MAX3747B are available in a 3mm, 10- PART TEMP RANGE PIN-PACKAGE pin MAX package ideal for small form- MAX3747AEUB+ -40C to +85C 10 MAX factor receivers. MAX3747BEUB+ -40C to +85C 10 MAX Applications +Denotes a lead(Pb)-free/RoHS-compliant package. Gigabit Ethernet SFP/SFF Optical Transceiver Modules 1G/2G Fibre-Channel SFP/SFF Optical Transceiver MAX is a registered trademark of Maxim Integrated Products, Inc. Modules Multirate OC-3 to OC-48 FEC SFP/SFF Optical Transceiver Modules Pin Configuration appears at end of data sheet. 10G LX4 Transceiver Modules Typical Application Circuit SFP OPTICAL RECEIVER HOST BOARD 3-INPUT SUPPLY FILTER HOST FILTER DIAGNOSTIC V CC MONITOR V RX CC DS1859 MAX4004 VCC MAX3747A MAX3747B 0.1F 0.1F IN+ OUT+ 50 SERDES MAX3745 0.1F 0.1F IN- OUT- 50 5-PIN TO-HEADER V TH GND LOS DISABLE REF 50 50 4.7k TO 10k V HOST CC LOS R TH1 0.1F 0.1F R TH2 RTH1 + RTH2 5k V CC For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-0281 Rev 2 8/12MAX3747A/MAX3747B 155Mbps to 3.2Gbps, Low-Power SFP Limiting Amplifiers ABSOLUTE MAXIMUM RATINGS Power-Supply Voltage (V ).................................-0.5V to +4.5V Continuous Power Dissipation (T = +70C) CC A Voltage at IN+, IN- ..........................(V - 2.4V) to (V + 0.5V) 10-Pin MAX (derate 6.9mW/C above +70C) ...........552mW CC CC Voltage at DISABLE, LOS, TH, V ..........-0.5V to (V + 0.5V) Operating Junction Temperature Range (T ) .......-55C to +150C REF CC J Current into LOS ...................................................-1mA to +9mA Storage Ambient Temperature Range (T )...........-55C to +150C S Current into V ..................................................................2mA Lead Temperature (soldering, 10s)......................................+300C REF Differential Input Voltage (IN+ - IN-) .....................................2.5V Soldering Temperature (reflow)............................................+260C Continuous Current at CML Outputs (OUT+, OUT-) ..............................................-25mA to +25mA 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. ELECTRICAL CHARACTERISTICS (V = +2.97V to +3.63V, CML output load is 50 to V , T = -40C to +85C. Typical values are at V = +3.3V and T = +25C, CC CC A CC A unless otherwise specified.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY M AX3 747A i nclud i ng the CM L output cu rr ent 36 41 M AX3 747B i nclud i ng the CM L output cu rr ent 38 43 MAX3747A excluding the CML output Supply Current (Note 2) I mA CC 18 24 current MAX3747B excluding the CML output 20 26 current Power-Supply Noise Rejection PSNR f < 2MHz 30 dB INPUT SPECIFICATION Input Sensitivity V (Note 3) 4 mV IN-MIN P-P Input Overload V (Note 3) 1200 mV IN-MAX P-P OUTPUT SPECIFICATION Output Resistance R (Note 4) 42 50 58 OUT Differential Output Return Loss DUT is powered on, f < 3GHz 15 dB MAX3747A/MAX3747B CML Differential Output Voltage 600 800 1000 mV P-P 4mV V 1200mV P-P IN P-P Differential Output Signal When AC-coupled outputs, V applied to the IN-MAX 15 mV P-P Disabled input (Note 4) Data-Output Transition Time 20% to 80% (Note 4) 70 120 ps TRANSFER CHARACTERISTIC K28.5 pattern at 3.2Gbps 13.2 19 23 PRBS 2 - 1 equivalent pattern at 2.7Gbps 14 25 (Note 6) Deterministic Jitter (Notes 4, 5) DJ ps P-P K28.5 pattern at 2.1Gbps 12 17 2 3 P RBS 2 - 1 eq uiva l ent p atter n at 155M b p s 85 150 (Note 6) Random Jitter V = 4mV (Notes 4, 7) 3.5 5 ps IN P-P RMS Maxim Integrated 2