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19-2730; Rev 0; 1/03
10Gbps EAM Driver with Integrated Bias Network
General Description
The MAX3940 is designed to drive an electro-absorption modulator (EAM) at data rates up to 10.
7Gbps.
It incorporates the functions of a biasing circuit and a modulation circuit, with integrated control op amps externally programmed by DC
voltages.
The integrated bias circuit provides a programmable biasing current up to 50mA.
This bias current reflects a bias
voltage of up to 1.
25V on an external 50Ω load.
The bias and modulation circuits are internally connected on chip, eliminating the need for an external bias inductor.
A high-bandwidth, fully differential signal path is internally...