Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Successive approximation ADC
One method of addressing digital ramp ADC's shortcomings is so-called successive approximation ADC. Only change in this design is a very special counter circuit called a successive-approximation register. Rather than counting up in binary sequence, this register counts by trying all values of bits starting with most significant bit and finishing at least-significant bit. During the count process, register monitors the comparator's output to see if binary count is greater than or less than analog signal input, adjusting bit values accordingly. The way the register counts is identical to 'trial-and-fit' method of decimal-to-binary conversion whereby different values of bits are tried from Most Significant Bit to Least Significant Bit to get a binary number which equals original decimal number. The benefit to this counting strategy is much faster results: DAC output converges on analog signal input in much larger steps than with 0-to-full count sequence of a regular counter.
Without demonstrating inner workings of successive-approximation register (SAR), circuit looks like this:
Fig: Successive Approximation ADC Circuit
It must be noted that SAR is normally capable of outputting the binary number in serial (one bit at a time) format hence eliminating the need for a shift register. Plotted over time, operation of a successive-approximation ADC looks like this:
Fig: Successive Approximation ADC Circuit Input and output Waveforms
Why is the signal first attenuated and then amplified?
What is Capacitor - A capacitor is an electrical device that is used to kept electrical energy. - The unit of capacitance is Farad. The symbol of capacitance is C.
duality of x+y''
time period measurement
The torque produced by each conductor in the field will be: where A is the area of the armature winding in the magnetic field, Ia is the current in armature winding, and B
Memory map of tpa in a personal computer and explain such of the areas in brief
Q. Basic working of Star Topology? In Star topology, all user nodes are connected to central node point that interconnects all individual users links and nodes. Data flows from
Q. Draw the differentiator circuit. Explain its principle of operation with necessary waveforms ? A circuit in which the output voltage is directly proportional to the derivati
12. A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safety
Q. Prove mathematically that the operating point does not depend on beta, in a potential divider bias circuit ? To determine the operating point, consider the input section of
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd