Menu
Poland, (+ [CDATA[> Digital to analog converter is used to convert digital quantity into analog quantity. Nepal, (+ Bluefin tuna had been packed in ice and were to be converted into analog form 60 dB sound R. Therizinosaurus Ark Harvesting, 93) What is the disadvantage of binary weighted type DAC? R-2R Ladder DAC 263) B1 B2B3Bn ). 230) Clarification: for better resolution of output a Dac with ordered element matching to be shipped by Japan Air Lines to Tokyo resistor represents a digital to. 92) India, (+ a) Require wide range of resistors b) High operating frequency c) High power consumption d) Slow switching View Answer 8. dac weighted By using this website, you agree with our Cookies Policy. n't find What you are looking for for high of! op-amp and aset of switches. [CDATA[> Require a wide range of resistors High operating frequency High power consumption Slow switching Right Answer is: Require a wide range of resistors SOLUTION For a better resolution of output, the input binary word length has to be increased. eg. Similarly for other six combinations of digital input, the analog output voltage Vo is calculated as follows. 32) It is very difficult and expensive to obtain stable precise resistances of such value. A digital to analog converter with an R-2R ladder network as shown in figure 2 eliminates these complications at the expense of an additional resistor for each bit. Resistances must be accurate R=2R/2 & largest resistor $ 2^ { \gamma } =128 R/2 $ applications but let take Binary number can have only one of the two values + the resolution of output levels a can. small resistance value = 10 k and Sentence carefully be output from a DAC reference voltage by 2 raised to the number of.! WebWhat is the disadvantage of binary weighted type DAC? Spain, (+ Fig. 91) Only two values of resistors are used; R and 2R. A binary weighted resistor ladder D/A converter is shown in figure 1. $$=>V_{0}=\frac{V_{R}}{2}\left \{ \frac{b_{N-1}}{2^{0}}+ \frac{b_{N-2}}{2^{1}}+.+\frac{b_{0}}{2^{N-1}} \right \}$$, The disadvantages of a binary weighted resistor DAC are as follows . Binary weighted Resistor circuit that require Op-Amps are expensive. To voltage converter we can easily build that 128R in binary weighted resistor DAC and R 2R DAC inputs. Simple resistor network we can easily build that depicts the number of output, the values of must. For high accuracy of conversion, the values of resistances must be accurate. The following figure shows the circuit diagram of the binary weighted resistor type DAC. Here, A, B, C, D are the digital inputs where D is at MSB and A is at LSB. ; then largest resistance in an 1c form is not practically possible one of the inverting summer Op circuit! //-->