10.7 Gb/s Electro-Absorption Modulator Driver

The ADN2859 is a low power 10.7 Gbps drivers for Mach-Zehnder modulator applications. The device is the smallest (4 mm x 4 mm Package), and lowest power (900 mW) device in its class. Integrated on-chip bias offset and modulation set buffer amplifiers further reduce board space requirements. The ADN2859 provides a 6 V peak-to-peak differential output to drive a differential Mach-Zehnder modulator. Greater overall device functionality is provided with improved modulation voltage rise and fall times of 27 ps and power dissipation of 900 mW.

The modulation voltage is programmable via an external voltage up to a maximum swing of 3 V when driving 50 Ω. The bias offset voltage and output eye cross point are also programmable. On-chip 50 Ω resistors are provided for back termination of the outputs. The ADN2859 operate from a single power supply at -5.2 V or -5.0 V. It is available in the 4 mm x 4 mm 24-Lead LFCSP Lead Frame Chip Scale package.