Your SlideShare is downloading. ×
Ad and da convertor
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.


Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

Ad and da convertor


Published on

Published in: Business, Technology

1 Like
  • Be the first to comment

No Downloads
Total Views
On Slideshare
From Embeds
Number of Embeds
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

No notes for slide


  • 1.  An electronic integrated circuit which transformsa signal from analog (continuous) to digital(discrete) form. Analog signals are directly measurablequantities. Digital signals only have two states. For digitalcomputer, we refer to binary states, 0 and 1.
  • 2.  Microprocessors can only perform complexprocessing on digitized signals. When signals are in digital form they are lesssusceptible to the deleterious effects of additivenoise. ADC Provides a link between the analog world oftransducers and the digital world of signalprocessing and data handling.
  • 3.  ADC are used virtually everywhere where ananalog signal has to be processed, stored, ortransported in digital form. Some examples of ADC usage are digital voltmeters, cell phone, thermocouples, and digitaloscilloscope. Microcontrollers commonly use 8, 10, 12, or 16bit ADCs, our micro controller uses an 8 or 10 bitADC.
  • 4.  Dual Slope A/D Converter Successive Approximation A/D Converter Flash A/D Converter Delta-Sigma A/D Converter OtherVoltage-to-frequency, staircase ramp or singleslope, charge balancing or redistribution, switchedcapacitor, tracking, and synchro or resolver
  • 5.  The general smart concept was narrowed downto a specific goal: to improve the performance ofa high-speed, high-resolution ADC in terms ofthe speed/power/accuracy trade-off. Two key-factors were investigated that have thepotential to enable high-performance ADconverters for high-speed/high-resolutionapplications, namely: Open-loop circuitry. Time-interleaving.
  • 6.  In electronics, a digital-to-analog converter (DACor D-to-A) is a device that converts a digital(usually binary) code to an analog signal(current, voltage, or electric charge). An analog-to-digital converter (ADC) performs the reverseoperation. Signals are easily stored andtransmitted in digital form, but a DAC is neededfor the signal to be recognized by human sensesor other non-digital systems. A common use of digital-to-analog converters isgeneration of audio signals from digitalinformation in music players.
  • 7.  A simplified functional diagram of an 8-bit DAC
  • 8.  The pulse-width modulator, the simplest DAC type. A stable current or voltage is switched into a low-pass analog filter with a duration determined by thedigital input code. This technique is often used for electric motor speedcontrol, but has many other applications as well.
  • 9.  Resolution: Maximum sampling rate Monotonicity: THD+N : Dynamic range:
  • 10.  The smart concept was applied to DA converterswith as aim to minimize the analog area as muchas possible, and to use digital processinginstead to solve the related accuracy problem.