An 89dB low-power CMOS /spl Sigma//spl Delta/ modulator for Bluetooth application

This paper presents a low-power CMOS /spl Sigma//spl Delta/ modulator for a single-chip Bluetooth transceiver. It implements a low-power, fast-settling operational amplifier and can achieve 75 dB SNDR and 81 dB dynamic range over 1 MHz bandwidth. The design was fabricated using 0.18 /spl mu/m CMOS process. The chip size is 0.63mm/sup 2/ and the power dissipation is only 64 mW.