A single-chip 3.5 Gb/s CMOS/SIMOX transceiver with automatic-gain-control and automatic-power-control circuits

Abstract

This chip enables an optical transceiver module that has only three main components: the CMOS chip, a CAN package housing a laser diode (LD) and a monitor photo-detector (PD), and a CAN package housing a photo-detector and a pre-amplifier. Noise-sensitive circuits, an automatic-gain-control (AGC) amplifier and automatic-power control (APC) circuit of a laser diode, are on the same die with digital logic. The chip also accommodates a phase-locked loop (PLL)/clock recovery circuit with a PLL (CRC), a laser driver (DRV), a multiplexer (MUX)/demultiplexer (DEMUX), a word aligner (WAN), a 16B/20B encoder (ENC)/decoder (DEC) and function selectors (SEL). This total integration reduces module area and power consumption and simplifies high-speed module design.