Single Slope Adc Block Diagram. Single slope a d example the main components of the single slope system are the comparator the constant current source for the external capacitor and the free. The single slope adc suffers all the disadvantages of the digital ramp adc with the added drawback of calibration drift.
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The block diagram of a single slope adc is shown in figure 2. A capacitor is charged from the input source until its voltage reaches v ref at which point the comparator trips. Figure2a shows the single slope adcs in a cis system consisting of a global ramp generator comparators and up down counters.
While charging a digital counter fed by a clock was also counting.
While charging a digital counter fed by a clock was also counting. As an example to obtain 10 bit resolution. Given the high speed operation of this multi segment single slope adc there is a need for real time calibration. The accurate correspondence of this adc s output with its input is dependent on the voltage slope of the integrator being matched to the counting rate of the counter the clock frequency.
