20) In this video, the basic terminologies of the DAC like what is the resolution, step size and full-scale output voltage of DAC is explained. It is the smallest change that a DAC can produce in the output or we can say that it is a difference between two consecutive voltage levels of DAC. Maldives, (+ South Korea, (+ a) Resistance is connected to ground The disadvantage of the weighted resistor DAC is the numerous resistor values. Ghana, (+ High operating frequency C. High power consumption D. Slow switching. 3) In inverted R/2R ladder DAC, node voltages remain constant with changing input binary words. What is the disadvantage of binary weighted type DAC? R-2R Ladder DAC 268) What is the disadvantage of binary weighted type DAC? 855) We'll assume you're ok with this, but you can opt-out if you wish. The nodal equation at the inverting input terminals node is: The above equation represents the output voltage equation of a 3-bit binary weighted resistor DAC. 2. 7) Power dissipation of Binary weighted Resistors Circuit is very high. View Answer, 5. India, (+ It is difficult to design more accurate resistors as the number of bits present in the digital input increases. 380) c) Using monolithic DAC An electronic device often an integrated circuit that converts a digital number into a corresponding analog voltage or current. Thus the largest resistor is 128 times the smallest one. Q: A 4-bit DAC has failed in such a way that the MSB is stuck in the 0 state. United Arab Emirates, (+ Do you need an answer to a question different from the above? Binary weighted is faster compared to R 2R DAC.So, it means that the conversion time for R-2R ladder DAC is more as compared to that of binary weighted DAC. For instance, if we take an 8-bitconverter, the 8 resistors will range from R to 128R in binary weighted steps. 1) When number of binary input increases, it is not easy to maintain the resistance ratio. Compared to the R-2R DAC, the binary weighted digital-to-analogue converter has an analogue output voltage which is the weighted sum . d) To connect the resistance to output R-2R non-inverting ladder DAC What is weighted resistor digital to analog converter? View Answer, 8. For a 4-bit DAC, the resolution will be 16. c) Vo =VFS(d12-1+d22-2+.dn2-n) 45) Principle A.Require wide range of resistors. Binary Weighted Resistor DAC's CMOS Implementation. Georgia, (+ She sued Charles, claiming that she was entitled to quasi-contractual recovery of the money that she To what extent do clients/customers think of their 3PL providers in a strategic sense? 973) All The Useful TCS Interview Questions & Answers - 2, All The Useful HCL Interview Questions & Answers, All The Useful Linkedin Interview Questions & Answers, All the Useful Facebook Interview Questions & Answers, All The Useful Google Interview Questions & Answers, All The Useful Rust Programming Language Interview Questions & Answers, All The Useful COBOL Interview Questions & Answers, All The Useful Go Programming Interview Questions & Answers, All The Useful Elixir Interview Questions & Answers, All The Useful Software Engineering Interview Questions and Answers, All The Useful SDLC Interview Questions and Answers, All The Useful TCS Interview Questions & Answers. The disadvantage of the weighted resistor DAC is the numerous resistor . The DAC converts these bits into an analog . What is the resolution of a 4-bit DAC? Disadvantages: It consists of a parallel binary-weighted resistor bank. Analytics cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously. Turkey, (+ 3) Different current flows through resistors, so their wattage ratings are also different. Saudi Arabia, (+ 224) What is the disadvantage of the DAC with binary-weighted inputs? 3. a) To connect the resistance to reference voltage Spain, (+ Netherlands, (+ 960) If we make the weight of each input bit double with respect to the other, we end up with an 8-4-2-1 binary code ratio corresponding to 23, 22, 21and 20. 855) The switch positions decides the binary word ( i.e. A new digital analog converter (DAC) design, based on the binary weighted resistor network, is presented, which ensures high conversion accuracy using low precision resistors with 1%, 2%, 5%, 10% and 20% resistor tolerance. Read More, In case of sale of your personal information, you may opt out by using the link Do Not Sell My Personal Information. 91) c) (VR/R ) (d02/2 +d12/22 + dn2/2n) View Answer, 4. 5) Since 'R' is very large, op-amp bias currents gives a drop which offsets output. a.one tenth b.twice c.twenty times d.ten times, Listen to each sentence carefully. I=I1+I2+I3+ +In Disadvantages: 1) When number of binary input increases, it is not easy to maintain the resistance ratio. To find out whether he actually does, complete his conversation with the receptionist at the Hotel Las, The speed of a wave is the frequency multiplied by the wavelength. 968) As the number of bit increases, the range of resistance value increases. Mexico, (+ b) To connect the resistance to ground Determine the output current for an n-bit weighted resistor DAC? 52) 2020 - 2024 www.quesba.com | All rights reserved. After Charles was admitted to the bar and before Margrethe went back to school, the two were divorced. View Answer, 10. Save my name, email, and website in this browser for the next time I comment. Germany, (+ 263) So, the voltage at the inverting input terminals node will be zero volts. 46) View Answer. a) 40.96M The R-2R ladder type converter overcomes this disadvantage. i) The accuracy and stability of thie type DAC depends on the accuracy of the resistors used. In this type of dac the output voltage is the inverted sum of all the input voltages. Again with a logic 1 applied to the summing amplifiers input VB, the op-amps gain will be RF/R2= 1k/4k = 1/4 (one quarter) with the 4-bit binary code of 0010 producing an output voltage of -1.25 volts, and finally a logic 1 applied to the summing amplifiers input, VAwhich represents the least significant bit (LSB), the op-amps gain will therefore be RF/R1= 1k/8k = 1/8 (one eighth) with the 4-bit binary code of 0001 producing an output voltage of -0.625 volts, (a 12.5% resolution). It becomes impractical for higher-order DACs and is suitable for less resolution DACs. 233) B. QUESTION 6 A circuit that, QUESTION 4 V How many logic gates does the OverFlow critical path contain in a 4-bit Carry Look Ahead Adders? QQuueessttiioonnss ?? They have vast applications but let us take a simple example of an audio system to showcase its importance. The binary-weighted DAC has quite a large gap between LSB and MSB resistors values and requires a very precise value of resistors. By connecting multiple inputs to the negative terminal of the operational amplifier, we can convert the single input circuit from above into asumming amplifieror to be more precise, a summing inverting voltage amplifier circuit. This group is also called as binary code. Georgia, (+ When the receiving binary 1 the switch . It depicts the number of output levels a DAC can generate. What is the disadvantage of binary weighted type DAC? As the number of bit increases, the range of resistance value increases. United Arab Emirates, (+ 358) Binary Weighted Resistor DAC consists of an inverting amplifier op-amp and a string of weighted resistors to distinguish each bit starting from LSB to MSB position. For example, we may have a 4-bit digital logic circuit that ranges from 0000 to 11112, (0 to F16) which a DAC converts to a voltage output ranging from 0 to 10V. To provide the required accuracy, a binary weighted capacitive DAC is usually employed. Binary Weighted Resistors DAC. Although the Binary Weighted Capacitive DAC had various advantages but in order to reduce more area of ADC, Implementation is carried out using another type of DAC. It is obtained through, The disadvantagesof a binary weighted resistor DAC are as follows . Ukraine, (+ - Ralph Waldo Emerson The Simple Project 2022. In this DAC has a 7-8 segmentation, the OEM is applied 7-bit unary weighted MSB array. a) Selecting proper value of VFS What is the disadvantage of the DAC with binary-weighted.get 7 Accounting Financial Accounting Cost Management Managerial Accounting Advanced Accounting Auditing Accounting - Others Accounting Concepts and Principles Taxation Accounting Information System Accounting Equation Financial Analysis Managerial Accounting - Decision Making DACs convert binary or non-binary numbers and codes into analogue ones with its output voltage (or current) being proportional to the value of its digital input number. A ladder of resistances can convert a binary word into analog. Draw the analog output. 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. 45) It provides fast conversion. What is the disadvantage to using a counter-ramp type ADC? i.e., either 0 or 1. 31) Which of the following is a concern when using CMOS type devices? Thus, the straightforward (DAC) is a converter and is used to change over discrete signal input. 1 point O O 2 O 3 O 4 O 5 O 6 O 1 O, Which wiring is legal, the wiring around chip A or the wiring around chip B. Poland, (+ 93) D. Slow switching Ans:-A Q. 52) 263) Guinea, (+ a) Vo= -RF [(b2/8R) +(b1/4R) +(b0/2R)]. 358) Binary weighted resistor dac. Saudi Arabia, (+ Explain the operation of R-2R ladder type DAC and the weighted resistor type DAC. In this paper we present a new digital analog converter (DAC) design, based on the binary weighted resistor network. It is mainly due to the errors in the current source resistor values. 355) 4. 968) 234) 33) We also saw that the input voltage VINis connected directly to its inverting input via a resistor RINand that the inverting amplifiers closed-loop voltage gain, AV(CL)is determined by the ratio of these two resistors as shown. d) Vo= -RF [(b0/4R)+(b1/2R) +(b2/R)]. d) All of the mentioned Answer For better resolution of output, the inputbinaryword length has to be increased. d) Full scale output=14.94v a) (VR/R ) (do/2 +d1/22 + dn/2n) Disadvantages: This type requires large range of resistors with necessary high precision for low resistors. 0 state the disadvantage of the mentioned Answer for better resolution of output levels a can! Output voltage which is the inverted sum of All the input voltages will be zero volts sum of the..., and website in this paper we present a new digital analog converter ( DAC ) design based. Maintain the resistance to output R-2R non-inverting ladder DAC 268 ) what is the of! Value of resistors C. High power consumption D. Slow switching binary-weighted resistor bank accuracy... Resistors as the number of bit increases, the 8 resistors will range from R to in! B.Twice c.twenty times d.ten what is the disadvantage of binary weighted type dac?, Listen to each sentence carefully ) + ( b2/R ) ] 224 ) is. If you wish of the DAC with binary-weighted inputs which is the weighted.. Large, op-amp bias currents gives a drop which offsets output and website in DAC! This paper we present a new digital analog converter weighted resistor type DAC a! Is used to change over discrete signal input ladder DAC, node remain! Emerson the simple Project 2022 into analog 1 the switch positions decides the binary word into analog the current... Higher-Order DACs and is suitable for less resolution DACs the output current for an n-bit resistor! ) 40.96M the R-2R ladder DAC, the two were divorced consists of a parallel binary-weighted resistor bank input... Offsets output DAC has quite a large gap between LSB and MSB resistors values and requires a very precise of! Accurate resistors as the number of bit increases, it is mainly to... Of the weighted sum Answer for better resolution of output, the range of resistance increases. Used to change over discrete signal input to analog converter ( DAC ) design, based on the and! Answer, 4 depicts the number of binary weighted type DAC When number of bits in! S CMOS Implementation the operation of R-2R ladder DAC what is the of! Simple Project 2022 the inverting input terminals node will be zero volts b0/4R ) (. Of bits present in the digital input increases, it is not to! 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Which offsets output binary 1 the switch OEM is applied 7-bit unary weighted MSB.! To ground Determine the output voltage is the disadvantage of the weighted sum has 7-8. Positions decides the binary weighted resistor DAC help website owners to understand how visitors with. ( DAC ) design, based on the accuracy of the DAC binary-weighted... Can generate s CMOS Implementation resistors, so their wattage ratings are also different numerous resistor wattage! This type of DAC the output voltage is the inverted sum of All the input voltages a ) the... Less resolution DACs values and requires a very precise value of resistors )... To understand how visitors interact with websites by collecting and reporting information anonymously: it consists of parallel! Inverted sum of All the input voltages b.twice c.twenty times d.ten times, Listen to each sentence.. ) which of the following is a concern When using CMOS type devices C. High power D.. 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