CLOCKLESS ANALOG BANDPASS DELTA SIGMA MODULATOR

摘要

The invention relates to an analogue band-pass delta-sigma modulator comprising a quantize (410) with a quantizer input (41) and a quantizer output, (42) a first resonator (422) providing a first resonator output signal (41) connected to the quantizer input, and at least one feedback loop (450), wherein the asynchronous quantizer is triggered by the output signal of the resonator. The asynchronous quantizer is a clock-less quantizer that is triggered by the signal to be quantized. In the delta-sigma modulator of the invention, no external clock-signal is applied to the asynchronous quantizer.