Describe the operation of voltage to frequency ADC, Computer Engineering

Assignment Help:

Describe the operation of voltage to frequency ADC.

Ans:

A voltage-to-frequency converter i.e. VFC is an oscillator that frequency is linearly proportional to a control voltage. The voltage-to-frequency converter A to D Convertor is monotonic and free of missing codes, integrates noise and can consume extremely little power.

The current-steering multivibrator voltage-to-frequency converter is in fact a current to-frequency converter quite than a VFC, but, as demonstrated in Figure below, practical circuits invariably have a voltage to-current converter at the input.

The principle of operation is evident: the current discharges the capacitor till a threshold is reached, and while the capacitor terminals are reversed, the half cycle repeats by itself. The waveform across the capacitor is a linear triangular wave, although the waveform on either terminal regarding ground is the more complicated waveform shown.

1923_voltage to frequency ADC.png

Truth Table

A3

A2

A1

A0

d6

d5

d4

d3

d2

d1

d0

|

x

-

-

-

-

-

-

-

-

-

-

-

---

-

0

0

0

-

-

-

-

-

-

-

0

|

0

0

0

0

-

-

-

-

-

-

-

1

|

1

0

0

1

-

-

-

-

-

-

0

-

|

0

0

0

1

-

-

-

-

-

-

1

-

|

1

0

1

0

-

-

-

-

-

0

-

-

|

0

0

1

0

-

-

-

-

-

1

-

-

|

1

0

1

1

-

-

-

-

0

-

-

-

|

0

0

1

1

-

-

-

-

1

-

-

-

|

1

1

0

0

-

-

-

0

-

-

-

-

|

0

1

0

0

-

-

-

1

-

-

-

-

|

1

1

0

1

-

-

0

-

-

-

-

-

|

0

1

0

1

-

-

1

-

-

-

-

-

|

1

1

1

0

-

0

-

-

-

-

-

-

|

0

1

1

0

-

1

-

-

-

-

-

-

|

1

 


Related Discussions:- Describe the operation of voltage to frequency ADC

Two independent mechanisms for controlling interrupt request, What are the ...

What are the two independent mechanisms for controlling interrupt request? At the device end, an interrupt enable bit in a control register verifies whether the device is permi

Should we use cgi or an api, APIs are proprietary programming interfaces su...

APIs are proprietary programming interfaces supported by certain platforms. By using an API, you lose all portability. If you know your application will only ever run on single pla

What is a multiple line field, What is a multiple line field? A multipl...

What is a multiple line field? A multiple line field is a special part of field which allows the user to enter multiple lines of data into it.

What is class and class diagram, What is class, class diagram? An objec...

What is class, class diagram? An object is an instance of a class. Class explains a group of objects with similar properties (attributes), behaviour (operations), kinds of rela

In which network configuration all data/information pass, A distributed net...

A distributed network configuration in which all data/information pass through a central computer is (A)  Bus network                            (B) Star network (C)  Rin

Convert the binary number to gray code, Convert the binary number 10110 to ...

Convert the binary number 10110 to Gray code ? Ans. For changing binary number 10110 in its equivalent Gray code the rules are as, the left most bit that is MSB in Gray code is 1

Construct the finite automata, Give the regular expression of the set of al...

Give the regular expression of the set of all even strings over the alphabet {a, b} along with at least one of the two substrings aa or bb. As well construct the finite automata wh

Dhcp, how to set up dhcp

how to set up dhcp

Compute minimum value of the horizontal force, Compute minimum value of the...

Compute minimum value of the horizontal force: Block A of weight 520N rest on horizontal top of block B having weight of 700N as shown in the figure given below. Block A

Which way do twin twist props on a boat rotate, Q. Which way do twin twist ...

Q. Which way do twin twist props on a boat rotate when propelling the boat forward? Answer:- In opposite direction however they are designed to propel the boat forward eve

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd