Analog-to-digital conversion device comprising two cascaded analog-to-digital conversion stages with successive approximation register and noise shaping, and associated electronic sensor

摘要

Analog-to-digital conversion device comprising two cascaded analog-to-digital conversion stages with successive approximation register and noise shaping, and associated electronic sensor This analog-to-digital conversion device (10) comprises: - an input terminal ( 12) to receive an analog input signal (Vin (z)); - an output terminal (14) for delivering a digital output signal (Dout (z)); - a first analog-to-digital conversion module (24) with successive approximation register, called the first SAR ADC module, connected to the input terminal (12); - a first feedback module (30) associated with the first SAR ADC module (24); a second analog-to-digital conversion module (38) with successive approximation register, called the second SAR ADC module, connected in cascade to the first SAR ADC module (24); - a second feedback module (44) associated with the second SAR ADC module (38); and - a multiplexing module (20) connected to the first and second SAR ADC modules (24, 38), to deliver the digital output signal (Dout (z)). Figure for the abstract: Figure 1