Arrange the following components of dual‐slot integrating A/D converter in order of their appearance while moving from input to output stage.

A. Comparator

B. Control

C. Integrator

D. Counter

Choose the correct answer from the options given below 

Concept:

Dual slope ADC

In dual slope type ADC, the integrator generates two different ramps, one with the known analog input voltage VIN and another with a known reference voltage –Vref. Hence it is called a s dual slope A to D converter.

The logic diagram for the same is shown below.

When discharging the counter will be ON.

The input signal is applied to an integrator; at the same time, a counter is started, counting clock pulses.

NOTE:

1. V0 ≤ 0 → counter stops

2. Let V = input voltage of the integrator then the output voltage is

\({V_0} = - \frac{1}{{RC}}\smallint V.dt = - \frac{V}{{RC}}t\)

3. The functions of the control circuit are:

a. For a fixed time T: S→ Vin ⋯ charging

b. After T: S→ VR ⋯ discharging