Digital Electronics: Principles, Devices and Applications

Data Conversion Circuits – D/A and A/D Converters 515-12V Clock+5V15 10 18 8 11Output7Enable-5V V inADC 0800 69SCEOC5 12(a)8-BitWord+10V-7VV in15 10 8 127ADC 0800 695 18OutputEnableSCEOC8-BitWord(b)Figure 12.42 Basic application circuits using AD 0800.stand-alone operation or easy interface to all microprocessors, a 0–5 V analogue input range witha single 5 V supply and latched tristate outputs. Figure 12.43 shows the internal architecture of thedevice.12.12.3 ADC-80/AD ADC-80ADC-80/AD ADC-80 is a 12-bit A/D converter of the successive approximation type. It has an on-chipclock generator, reference and comparator. AD ADC80 is pin-to-pin compatible with industry-standardADC-80. Figure 12.44 shows the internal block schematic/pin connections of AD-ADC-80. The salientfeatures of the device include low cost, ± 0.012 % linearity, a conversion time of 25 s (max.),