Multiple choice

In the following circuit, the comparators output is logic “1” if V1 > V2 and is logic “0” otherwise. The D / A conversion is done as per the relation VDAC = $\sum_{n=0}^3 2^{n-1}b_n$ Volts, where b3 (MSB), b1, b2 and b0 (LSB) are the counter outputs. The counter starts from the clear state.

The magnitude of the error between VDAC and Vin at steady state (in volts) is

  1. 0.2

  2. 0.3

  3. 0.5

  4. 1.0

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The $V_{ADC} - V_in$ at steady state is = 6.5 - 6.2 = 0.3V