Explain the working of a weighted register d/a converter, Computer Engineering

With the help of a neat diagram, explain the working of a weighted-resistor D/A converter.

Ans

Weighted Register D/A Converter:

 

2123_Weighted Register.png

Digital input that has 4 bits is applied to a register network throughout electronic switch. Such electronic switch generates current I at MSB (consequent to Logic 1), I/2 at the subsequent lower significant position. The whole current produced will be proportional to digital input. Such current can be converted to consequent voltage by using an op-ampere. Circuit of this convertor is referred to as weighted register converter because the resistance values are weighted in accordance along with the binary weights.

The current Ii is specified by

Ii = IN-1 + I N-2 + ........+ I0 where  IN-1 = VN-1/ R, IN-2 = VN-2/ 2R, IN-3 = VN-3/4 R and also V(O) if bn = 0 and VN = V(1) if bn = 1

For straight binary inputs V(0) = 0 and V(1) = - VR and the output voltage is specified by:

V0 = -[-VR] [(RF/R) bn-1 +(RF/2n ) bn-1 +(RF/22R) bn-1 +_______________(RF/2n-1R) b0]

Posted Date: 5/4/2013 7:45:50 AM | Location : United States







Related Discussions:- Explain the working of a weighted register d/a converter, Assignment Help, Ask Question on Explain the working of a weighted register d/a converter, Get Answer, Expert's Help, Explain the working of a weighted register d/a converter Discussions

Write discussion on Explain the working of a weighted register d/a converter
Your posts are moderated
Related Questions
1. How can you divide the screen into quadrants? Is the process called as ‘viewing transformations’?

Execution: Now instruction is ready for execution. A different opcode will need different sequence of steps for execution. Hence let's discuss a few illustrations of execution of s

Tree (recursive definition) A tree is a finite set of one or more than one nodes such that. (1) There is a specially designated node known as the root. (2) The left over

Tightly Coupled System- Shared Memory System Shared memory multiprocessorshas has following description: Every processor commune through a shared global memory. For

What is NEG instruction Arithmetic sign inversion or two's complement (NEG). NEG instruction two's complements a number which means that arithmetic sign of a signed number cha

Problem : (a) Show whether or not a standard format for representing data, such as XML, is needed. (b) Using an appropriate example, describe how data is organized in a dat

CMOS circuits are extensively used for ON-chip computers mainly because of their extremely ? Ans. Since CMOS circuits have large packing density, so these are extensively use

How can we access the correction and transport system? Each time you make a new object or change an existing object in the ABAP/4 Dictionary, you branch automatically to the W

Documentation is done to give others with information and ease maintenance. The best documentation is done in the headers (function and scripts) and directly in the code. Any usefu

Q. Explain about truth table and logic diagram? A Boolean function can be realized in a logic circuit employing the basic gates: - AND, OR & NOT. Concern here for illustration