Sigma-delta analog-to-digital converter

• Main Authors: DE ESPOSITO FRANCESCO, CASSAGNE THIERRY DOMINIQUE YVES, TICO OLIVIER, SANDRE PASCAL, BRULE, SIMON
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

A sigma-delta ADC includes: a first input resistor connected in series between a first input terminal and a first feedback node; a second input resistor connected in series between a second input terminal and a second feedback node; a third input resistor connected in series between a third input terminal and a third feedback node; a first multiplexer switch connected in series between the first feedback node and the second input of the first amplifier; a second multiplexer switch connected in series between the second feedback node and the first amplifier first input; the third multiplexer switch is connected in series between a third feedback node and the second input end of the first amplifier; the first feedback current source is provided with a first end and a second end, and the second end is connected to the reference end; a second feedback current source; a first feedback selection switch; a second feedback selection switch; and a third feedback selection switch connected in series between the third f