A 12 bit 200 MHz low glitch CMOS D/A converter

Abstract

A 12-bit 200 MHz CMOS current steering D/A converter is presented. The measured glitch energy is 0.8 pVs. To obtain this very low glitch energy specification, a new driver circuit using a dynamic latch is proposed. The measured INL is better than +/-0.5 LSB. The D/A converter operates at a 2.7 V power supply, it has a 20 mA full swing output current and a 200 MHz conversion rate. The worst case power consumption is 140 mW at the maximum conversion rate. The chip has been processed in a standard 0.5 /spl mu/m CMOS technology.