| 摘要 |
A device for quantizing an analog input signal, for supply of a continuous-time output signal quantized using a plurality of bits, includes a sign analysis electronic circuit, configured to supply a first signal representative of a first sign bit of the output signal, and an envelope analysis electronic circuit, including a comparator/quantizer with two inputs one of which receives the analog input signal, configured to supply a second signal representative of at least a second bit of the output signal, as a quantized envelope signal, and a feedback loop with continuous-time digital-to-analog conversion of the quantized envelope signal, arranged between the output and the other of the two inputs of the comparator/quantizer. The quantized envelope signal is a signal of which a low pass filtering is representative of the amplitude of an envelope signal of the input signal and the feedback loop includes a low pass filter. |
