MAX3935

19-4803; Rev 1; 12/02 10.7Gbps EAM Driver General Description The MAX3935 is designed to drive an electro-absorption modulator (EAM) at data rates up to 10.7Gbps. It provides programmable output levels through externally adjustable bias and modulation currents. This EAM driver is fabricated with Maxim’s in-house second-generation SiGe process. The MAX3935 accepts differential ECL or ground-referenced CML clock and data-input signals. Inputs are terminated with on-chip 50Ω resistors. An input-data retiming latch can be used to reject input-patterndependent jitter if a clock signal is available. The driver can modulate EAM devices at amplitudes up to 3.0VP-P when the device impedance is 50Ω. Typical (20% to 80%) edge speeds are 34ps. The output has an on-chip 75 Ω resistor for back termination. The MAX3935 allows for an EAM bias voltage up to 1.2V. The MAX3935 also includes an adjustable pulse-width control circuit to precompensate for asymmetrical EAM characteristics. o Single -5.2V Power Supply o Low 110mA Supply Current o 34ps Typical Rise/Fall Time o o o o o o Up to 10.7Gbps (NRZ) Operation On-Chip Termination Resistors Programmable Modulation Voltage Up to 3.0VP-P Programmable EAM Bias Voltage Up to 1.2V Adjustable Pulse-Width Control Selectable Data Retiming Latch Features MAX3935† o Modulation Enable Control o ESD Protection Ordering Information PART MAX3935EGJ MAX3935E/D TEMP RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 32 QFN-EP* Dice** Applications SONET OC-1...