Successive Approximation Adc Circuit Diagram. The successive approximation register adc is a must know. Depending upon the binary input the r 2r resistor network simplifies to an equivalent.
Successive approximation type analog to digital converter the main part of the circuit is the 8 bit sar whose output is given to an 8 bit d a converter. The image below shows exactly that. The cover image shows the basic successive approximation adc circuit.
The equivalent analog output voltage of dac vd is applied to the non inverting input of the comparator.
Block diagram successive approximation adc block diagram key dac digital to analog converter eoc end of conversion sar successive approximation register s h sample and hold circuit v in input voltage v ref reference voltage algorithm the successive approximation analog to digital converter circuit typically consists of four chief subcircuits. The circuit diagram is shown below. One method of addressing the digital ramp adc s shortcomings is the so called successive approximation adc. One of the most common analog to digital converters used in applications requiring a sampling rate under 10 msps is the successive approximation register adc.
