EE-Quiz Question 12

Data Acquisition

Figure 1.

In Figure 1:

1. The signal voltage source ranges from 0 to +100mV, and +100mV corresponds to the ADC full scale.
2. The amplifier is set for a closed loop gain of 50.
3. The A-to-D converter has an input range of 0 to +5V.
4. The A-to-D converter has a resolution of 10 bits.

Questions:

1. What input offset voltage of the operational amplifier will cause a 1 LSB DC error at the A-to-D converter output?
2. How many calculation steps does it need to arrive at the answer to question 1?
3. Of the four pieces of information, a, b, c, and d, above, which one(s) do you NOT need to calculate the answer to question 1?