question no:2
Resolution: This is the number of possible output levels the DAC is designed to reproduce. This is usually stated as the number of bits it uses, which is the base two logarithm of the number of levels. For instance a 1 bit DAC is designed to reproduce 2 (21) levels while an 8 bit DAC is designed for 256 (28) levels. Resolution is related to the Effective Number of Bits (ENOB) which is a measurement of the actual resolution attained by the DAC.
The Binary Weighted DAC,
which contains one resistor or current source for each bit of the DAC connected to a summing point. This is one of the fastest conversion methods but suffers from poor accuracy because of the high precision required for each individual voltage or current.
The R-2R Ladder DAC,
which is a binary weighted DAC that uses a repeating cascaded structure of resistor values R and 2R. This improves the precision due to the relative ease of producing equal valued matched resistors (or current sources).
DAC Question no:2
Resolution is the minimum value that can be increased at the output side.often it is also called as ‘STEPSIZE’.
i’ve used 10mV resolution DAC (DAC 0808).
5 Comments on DAC interview questions and answers
question no:2
Resolution: This is the number of possible output levels the DAC is designed to reproduce. This is usually stated as the number of bits it uses, which is the base two logarithm of the number of levels. For instance a 1 bit DAC is designed to reproduce 2 (21) levels while an 8 bit DAC is designed for 256 (28) levels. Resolution is related to the Effective Number of Bits (ENOB) which is a measurement of the actual resolution attained by the DAC.
I used a 8-bit resolution DAC chip in my lab
Question no:4
1.PWM DAc
2.Oversampling comonly known as Delta sigma DAC
3.Binary Weighted DAC
4.R-2R Ladder DAC
5.Thermometer Coded DAC
6.Segmented DAC
7.Hybrid DAC
Question no:8
The Binary Weighted DAC,
which contains one resistor or current source for each bit of the DAC connected to a summing point. This is one of the fastest conversion methods but suffers from poor accuracy because of the high precision required for each individual voltage or current.
The R-2R Ladder DAC,
which is a binary weighted DAC that uses a repeating cascaded structure of resistor values R and 2R. This improves the precision due to the relative ease of producing equal valued matched resistors (or current sources).
Question no:9
DAC have a wide application on Audio and Video devices were the out is converted to digital to analog signal.
DAC Question no:2
Resolution is the minimum value that can be increased at the output side.often it is also called as ‘STEPSIZE’.
i’ve used 10mV resolution DAC (DAC 0808).