A 10-b 50 MS/s 500-mW A/D Converter Using a Differential-Voltage Subconverter (Special Section on the 1993 VLSI Circuits Symposium (Joint Issue with the IEEE Journal of Solid-State Circuits, Vol.29, No.4 April 1994))

概要

論文の詳細を見る
A BiCMOS A/D converter using a "differential voltage subconverter," which directly converts a voltage difference of complementary analog inputs to a digital code, is described. Fully differential architecture has advantages in immunity of common-mode error and in reduction of supply voltage. This differential-voltage subconverter realizes the fully differential A/D conversion without using interpolation technique. This subconverter is free from CR delay caused in the ladder resistors. Circuit techniques for high-accuracy conversion with single 5-V power supply, such as compensation technique for VBE modulation in emitter degeneration amplifier, are also described. A 10-b A/D converter is fabricated in a 0.8-μm BiCMOS process with f_T of 9 GHz. It successfully operates at 50 MS/s with 500-mW power consumption and with 5-V single supply.
社団法人電子情報通信学会の論文
1994-05-25