• Kumari Snehal Vataliya
• Shruti Panchal
• Dr. P.D.Lele

Different ADC techniques are briefly introduced here. The simultaneous converter has least conversion time but becomes unwieldy for more than a few bits of digital conversion. The simple counter method has a very long conversion time (2n clock pulses for n-bit conversion). The continuous converter is very fast once it is locked with the signal but cannot be multiplexed. Here, we present 16-bit ADC using sectional counter technique. This technique is used for reducing the total conversion time of a simple counter by dividing into sections. Here we use programmable gain amplifier (op-amp IC741) whose gain is selected by digitally controlled analog switching multiplexer IC CD4052. Using the sectional counter our aim is to reduce conversion time. In simple counter method; pulses required for one conversion are given by 2n (for 8 bit conversion, 28 = 256 and for 16 bit conversion 216 = 65,536 pulses). In sectional counter technique, number of pulses required for one conversion is given by Number of sections * 2n (for 8 bit conversion of 2 sections of 4 bits each 2*24 = 32 clock pulses and for 16 bit ADC of 4 sections of 4 bits each 4*24 = 64 clock pulses).

ADC, Conversion time, Sectional Counter, Bit.

"16-BIT ADC USING SECTIONAL COUNTER TECHNIQUE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.160-163, July-2018, Available :http://www.jetir.org/papers/JETIRC006336.pdf

"16-BIT ADC USING SECTIONAL COUNTER TECHNIQUE", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp160-163, July-2018, Available at : http://www.jetir.org/papers/JETIRC006336.pdf