# Recent questions and answers in Integrated Circuits

1
If the maximum output voltage of a DAC is $V$ volts and if the resolution is $R$ bits then the weight of the most significant bit is ________ $V/(2^R -1)$ $(2^{R-1}).V/(2^R-1)$ $(2^{R-1}).V$ $V/(2^{R-1})$
2
Assuming ideal diodes, the voltage at $V_0$ for circuit in the below figure is _______ (Express the voltage in terms of x, y and z)
3
Fig. below shows the circuit diagram of a wien bridge oscillator using an op-amp. The frequency of oscillation is given by $f= 1/2 \pi CR$. To have the system oscillate the ratio $R_{2}/R_{1}$ should be $0.5$ $29$ $2$ Any value
4
The most satisfactory LED driver circuit using a TTL gate is:
5
Which of the following logic families is well suited for high-speed operations? TTL ECL MOS CMOS