An 8-bit 200 Ms/s 500 mW BiCMOS ADC

This paper presents an 8-bit 200 M-sample/s (Ms/s) 500 mW analog-to-digital converter (ADC) applicable to liquid crystal display (LCD) driver systems. The ADC features such circuit techniques as a low-power and high-speed comparator, an open-loop sample-and-hold amplifier with a 3.4 ns acquisition time, and a fully differential two-step architecture, and it has been fabricated with a 0.8 /spl mu/m BiCMOS process onto an area of only 12 mm/sup 2/.