Successive-approximation analog to digital converter, Electrical Engineering

Assignment Help:

Successive-approximation analog to digital converter

This converter, shown in Figure, also contains a D/A converter, but the binary counter is replaced by a successive-approximation register (SAR), which makes the analog-to-digital conversion much faster. The SAR sets the MSB to 1 and all other bits to 0, after a start-of- conversion pulse. If the comparator indicates the D/A converter output to be larger than the signal

773_Successive-approximation analog to digital converter.png

to be converted, then the MSB is reset to 0 and the next bit is tried as the MSB. On the other hand, if the signal to be converted is larger than the D/A computer output, then the MSB remains 1. This procedure is repeated for each bit until the binary equivalent of the input analog signal is obtained at the end. This method requires only n clock periods, compared to the 2n clock periods needed by the counter-controlled A/D converter, where n is the number of bits required to encode the analog signal. The National ADC 0844 is a popular 8-bit A/D converter based on the SAR.


Related Discussions:- Successive-approximation analog to digital converter

Working principle of ultrasonic machining, Explain the basic working princi...

Explain the basic working principle of ultrasonic machining with the help of diagram. What are the different kinds of tool materials explain, tool holders are used in ultrasonic

Hold input - externally initiated signals , HOLD Input This  signal (W...

HOLD Input This  signal (When  goes high ) indicates that  other device ( such as DMA Controller) is requesting the  use of  address and data buses. DMA controller is  explaine

Derive the transfer function, A data hold is to be constructed that reconst...

A data hold is to be constructed that reconstructs the sampled signal by the straight-line approximation shown in Figure. Note that this device is a polygonal data hold with a dela

Find out control voltage, Consider the network shown in Figure containing a...

Consider the network shown in Figure containing a voltage-controlled source producing the controlled current i c = gv, where g is a constant with units of conductance, and the con

Calculate the value of current flow, 15 cells with emf for every cell are 1...

15 cells with emf for every cell are 1.5V and internal resistance 0.3Ω is linked in parallel. Calculate the value of current flow if the external resistance, 5Ω is linked to them.

Explain global positioning systems, Q. Explain Global Positioning Systems? ...

Q. Explain Global Positioning Systems? Modern communication systems abound in practice: cellular phones, computer networks, television satellites, and optical links for telepho

LED, PRINCIPLE OF LED

PRINCIPLE OF LED

Machine-tool process to drill or punch holes, Q. Explain Machine-tool proce...

Q. Explain Machine-tool process to drill or punch holes? Figure depicts an elementary system, including the input, digital processor, drill-positioning mechanism, and sampled-d

Diode characteristic, Q. For the circuit shown in Figure(a), determine the ...

Q. For the circuit shown in Figure(a), determine the diode current and voltage and the power delivered by the voltage source. The diode characteristic is given in Figure.

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