Analog-to-Digital Converters Lecture L10.5 Lab 11

Analog-to-Digital Converters Converts analog signals to digital signals 8-bit: 0 – 255 10-bit: 0 – 1023 12-bit: 0 – 4095 Successive Approximation Flash

Method of Successive Approximation

Implementing Successive Approximation

ADC0831 8-Bit Serial I/O A/D Converter

ADC0831 Timing    

Voltmeter Logic Block Diagram

Flash A/D Converter Uses analog comparators to convert an analog signal to a digital signal in a single clock cycle n-bit converter requires 2n – 1 comparators 4-bit converter requires 15 comparators 8-bit converter requires 255 comparators Or two 4-bit converters plus a D/A converter

MAX118

Flash A/D Converter

MAX118