An OTA controlled voltage boost to bias the photodiode in OEICs

In this paper, an OTA controlled voltage boost without clock is proposed to enhance the frequency response for the photodiodes. The voltage boost produces a voltage of 8V with 8mV low output voltage ripple in 10uA load condition for a single 5V supply. A simple logic control is proposed to replace clock control. The proposed voltage boost circuit is designed in standard 0.18μm BCD technology.