Question

1. How many bits are required to represent a waveform in 4000 discrete levels?

2. An audio CD can contain 80 minutes of stereo (two independent) audio tracks. Each

track is sampled with 16-bit samples at 44.1 kHz. How much audio information, in

bytes, is stored on an audio CD?

3. Assume a 4-bit successive approximation A/D with VREF+ = 4V and VREF– = 0V.

Calculate the 4-bit output code (in hex) if the input voltage is 1.8V.

4. A 10-bit ADC has VREF– = 0.0V and VREF+ = 3.3V. What is the output code (in hex) if the

input signal is 0.449 volts?

5. A 12-bit ADC has VREF– = 0.0V and VREF+ = 3.3V. What is the output code (in hex) if the

input signal is 2.91 volts?

Answer 1