Digital to Analog Converter (DAC)

1 Answer

Digital to Analog Converter (DAC)


•Digital means binary (1 0) and 1 and 0 may be true and false or on and off or high and low.

•Analog means continuous signal or information represented by variable quantity.

•Converter is a device.

•DAC stands for Analog to Digital Converter.

•DAC is a device use for converting digital data to analog form.

•Application of DAC are in electronic audio devices, oscilloscope, printers, electronic speed controllers, Computer, telephone, mobile, etc.

•DAC is like a modulator.

•Converting signal from digital to analog degrade the signal therefore details are chosen to neglect errors.

•Common types of DAC are pulse width modulator, oversampling DAC, binary weighted DAC, R-2R ladder DAC, Hybrid DAC etc.

•Now DAC conversion is of three types one is Amplitude Shift Keying (ASK) second is Frequency Shift Keying (FSK) third is Phase Shift Keying (PSK).

•Amplitude Shift Keying (ASK) is represent digital data as a variation in the amplitude of a carrier wave.

•Frequency Shift Keying (FSK) is digital data is transmitted through discrete frequency changes of carrier wave.

•Phase Shift Keying (PSK) is transmit digital data by changing the phase of carrier wave.

Like 1 like


Description : What is Analog to Digital Converter (ADC) ?

Answer : Analog to Digital Converter (ADC)  Analog quantity may be voltage, temperature, sound, speed, audio etc. it is information or signal. ... digital form), digital speedometer (converts analog speed into digital form) etc.

Description : Can you convert analog signal to digital?

Description : Compare analog and digital instruments .

Answer : Parameter Analog Instrument Digital Instrument  1 Principle The instrument that displays analog signals is called as on analog instrument.  The instrument that displays ... , etc. Logical analyzer, signature analyzer, computers, microprocessor based instruments, etc. 

Description : Compare analog CRO with digital storage oscilloscope (DSO).

Answer : Analog CRO DSO 1 High bandwidth Less bandwidth due to aliasing effect 2 High  writing speed about 15 GHz Limited speed 3 No memory Has memory ... Less storage time. The digital oscilloscope is  capable of an infinite storage time, using its digital memory.

Description : State two advantages of digital system over analog system.

Answer : 1. They are less susceptible to noise. 2. The effect of fluctuation in the characteristic of the components, ageing of components etc. is very small in digital circuits. 3. Digital circuits have capability of memory which makes them suitable for computers. 4. More accurate.

Ask a Question ← Prev Page Next Page →