1-An ADC with word length of 24 bits. If the input analogue signal range is 3.7 V, what is the resolution of this ADC? 2-A thermocouple giving an output of 0.5 mV/oC. What will be the word length required when its output passes through an ADC if temperatures from 0oC to 1200C are to be measured with resolution of 1.5oC?. Assume 12V as system voltage.

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An RTD is to be used as a temperature sensor and has a resistance at 0°C of 198 ohms. It forms one arm of a wheatstone bridge being balanced at this temperature and each of the other arms also being 198 ohms. If the temperature coefficient of the RTD material is 0.0075/K, what will be the output voltage in millivolts from the bridge per degree change in temperature if the supply voltage is 11.01V? No label, no unit, number only. Differential amplifier ... Offset ουtput Power supply Compensation lines RTD Add your answer

The figure below shows the input waveforms for a NOR latch. Draw the corresponding output waveforms. S A Q

An analog signal voltage in the range of 0 to 8V is divided into 16 equal intervals by a quantizer. What will be the maximum quantization error?

2. Suppose first that we want to measure the temperature of a room with the following components. Direct connection Vcc = 3.3 V LM35 ADC The sensor is the LM35 chip, which gives a voltage proportional to temperature in degrees of Celsius so that 0°C gives zero voltage. The scaling factor is 10 mV/°C, indicating that the LM35 gives 200mV at 20°C and so on. The sensor is a silicon IC, not a thermistor. Its output is a linear function of temperature, which is convenient, but the voltage is small. a) Suppose the ADC is a 10-bit SAR, common in small microcontrollers, which takes its reference from the supply at 3.3V. We wish to resolve changes of 0.1°C or better over a range of 5°C to 30°C. Suppose first that we connect the output of the LM35 directly to the input of the ADC. What voltages must we measure? Is it possible to meet this specification without further components? Why? b) If the specifications in a) cannot be met. You can use an external ADC with a better resolution. Assume that…

b) Draw a fully labelled block diagram of a demodulator suitable for DSB-AM, DSB-SC, and SSB signals. Explain briefly it's operation, and why a simple diode detector would not have been suitable.