Dual slope ADC has R = 1 KΩ and C = 0.22 nanofarad has charging and discharge times for some voltage is 9 ns and 3 ns respectively. The reference Voltage is 2.2 V. What is the peak voltage reached by triangular wave during charging?

• A.  900 mV.
• B.  90 mV.
• C.  30 mV.
• D.  300 mV.

Answer: (C)