A Monolithic 8-Bit Video A/D Converter

A monolithic 8-bit two-step flash type A/D converter has been designed. To obtain full resolution and good linearity at high frequencies, a double folding analog signal processing system is used. Delay time errors between the coarse and the fine quantizes used can be corrected for in this system. An on-chip input amplifier allows adjustment of the input sensitivity with a high input impedance and a low input capacitance. the 3 x 4.2 mm/sup 2/ chip made in a standard bipolar technology consumes 100 mA from a 5.2 V supply.