A 1.8V continuous-time delta-sigma modulator with 2.5MHz bandwidth

摘要

This paper describes the implementation of a low-voltage, wide bandwidth, continuous-time low-passΔ∑ modulator. The presented modulator operates at a supply voltage of 1.8V and can achieve a maximum SNDR of 74dB (more than 12 bits) for an oversampling ratio of 32 and in a bandwidth of 2.5 MHz.