Question

A 4-bit binary Weighted Resistor type DAC uses 80 $k\Omega$ resistor for LSB. The resistor value used for MSB is ____$k\Omega$.

• A. 10

Answer 1

The correct option is A 10
For Weighted Resistor type DAC,

LSB resistor = $2^{n-1}$ MSB resistor

80 k = $2^{4-1}$ MSB resistor

$\therefore$ MSB resistor

$=\frac{80k}{2^3}=10k\Omega$