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DEFINITIONAn analog-to-digital converter, or ADC as it is more commonlycalled, is a device that converts analog signals into digitalsignals.ORAn analog-to-digital converter (ADC, A/D, or A to D) is a devicethat converts a continuous physical quantity (usually voltage) toa digital number that represents the quantity's amplitude 4. CONTENTS Definition Need of ADC in EMBEDDEDRegisters of ADCTypes of ADCApplications 3. Analog to Digital ConverterSUBMITTED BY:-Madhusudhan AgarwalĢ. Furthermore, any queries regarding this concept or to implement electrical and electronic projects, please give your valuable suggestions by commenting in the comment section below. We hope that you have got a better understanding of this concept. Thus, this article discusses digital to analog converter and its applications.
#Simple analog to digital converter schematic software
Software RadioĪ DAC is used with a Digital Signal Processor (DSP) to convert a signal into analog for transmission in the mixer circuit, and then to the radio’s power amplifier and transmitter. With some reorganization of the resistor/switch array, and the addition of an I2C compatible interface, a fully digital potentiometer can be implemented. Digital PotentiometerĪlmost all digital potentiometers are based on the string DAC architecture. The use of a DAC allows the dynamic change of voltages during operation of a system. Many industrial and factory lines require multiple programmable voltage sources, and this can be generated by a bank of DACs that are multiplexed. Motor Control Application Data Distribution System Many motor controls require voltage control signals, and a DAC is ideal for this application which may be driven by a processor or controller. The DAC provides dynamic calibration for gain and voltage offset for accuracy in test and measurement systems. The data acquisition will also include a process control end, in which the processor sends feedback data to a DAC for converting to analog signals. Data Acquisition Systemsĭata to be measured is digitized by an Analog-to-Digital Converter (ADC) and then sent to a processor. The graphic controller will typically use a lookup table to generate data signals sent to a video DAC for analog outputs such as Red, Green, Blue (RGB) signals to drive a display. As with audio codecs, these ICs may have integrated DACs. The video encoder system will process a video signal and send digital signals to a variety of DACs to produce analog video signals of various formats, along with optimizing of output levels. Often, the DAC will be incorporated into an entire audio codec which includes signal processing features. Audio AmplifierĭACs are used to produce DC voltage gain with Microcontroller commands. Some of the important applications are discussed below. In this way, we can find that when the input data is b3b2b1b0 (where individual bits are either 0 or 1), then the output voltage isĪpplications of Digital to Analog ConverterĭACs are used in many digital signal processing applications and many more applications. The output voltage is V0=3R(i0/16) = Vref/16 The output voltage is V0=3R(i1/8)= Vref/8įinally, the circuit is shown in below corresponding to the case where b0=1 and b2=b3=b1=0. If b1=1 and b2=b3=b0=0, then the circuit shown in the figure below it is a simplified form of the above DAC circuit.