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ADC-DAC Interfacing power point presentation

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Peripheral Devices

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ADC 0809
ADC 0809 • The ADC0809 is an 8-bit successive approximation type ADC with inbuilt 8-channel multiplexer. • The ADC0809 is suitable for interface with 8086 microprocessor. • The ADC0809 is available as a 28 pin IC in DIP (Dual Inline Package). • The ADC0809 has a total unadjusted error of ±1 LSD (Least Significant Digit).
PIN DESCRIPTION OF ADC0809
ADC-DAC Interfacing power point presentation
SAR
Interfacing ADC with 8085 thro 8255
ADC interfacing with 8051
DAC • To convert the digital signal to analog signal a Digital-to-Analog Converter (DAC) has to be employed. ( binary weighted and R/2R ladder. ) • The DAC will accept a digital (binary) input and convert to analog voltage or current. • Every DAC will have "n" input lines and an analog output. • The DAC require a reference analog voltage (Vref) or current (Iref) source. • The smallest possible analog value that can be represented by the n-bit binary code is called resolution. • The resolution of DAC with n-bit binary input is 1/2nof reference analog value.
DAC 0800 • The DAC0800 is an 8-bit, high speed, current output DAC with a typical settling time (conversion time) of 100 ns. • It produces complementary current output, which can be converted to voltage by using simple resistor load. • The DAC0800 require a positive and a negative supply voltage in the range of ± 5V to ±18V. • It can be directly interfaced with TTL, CMOS, PMOS and other logic families. • For TTL input, the threshold pin should be tied to ground (VLC = 0V).
R-2R Ladder
pin configuration of DAC0800
DAC interfacing with 8085 thro 8255
DAC interfacing with 8051

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ADC-DAC Interfacing power point presentation

  • 2. ADC 0809 • The ADC0809 is an 8-bit successive approximation type ADC with inbuilt 8-channel multiplexer. • The ADC0809 is suitable for interface with 8086 microprocessor. • The ADC0809 is available as a 28 pin IC in DIP (Dual Inline Package). • The ADC0809 has a total unadjusted error of ±1 LSD (Least Significant Digit).
  • 5. SAR
  • 6. Interfacing ADC with 8085 thro 8255
  • 8. DAC • To convert the digital signal to analog signal a Digital-to-Analog Converter (DAC) has to be employed. ( binary weighted and R/2R ladder. ) • The DAC will accept a digital (binary) input and convert to analog voltage or current. • Every DAC will have "n" input lines and an analog output. • The DAC require a reference analog voltage (Vref) or current (Iref) source. • The smallest possible analog value that can be represented by the n-bit binary code is called resolution. • The resolution of DAC with n-bit binary input is 1/2nof reference analog value.
  • 9. DAC 0800 • The DAC0800 is an 8-bit, high speed, current output DAC with a typical settling time (conversion time) of 100 ns. • It produces complementary current output, which can be converted to voltage by using simple resistor load. • The DAC0800 require a positive and a negative supply voltage in the range of ± 5V to ±18V. • It can be directly interfaced with TTL, CMOS, PMOS and other logic families. • For TTL input, the threshold pin should be tied to ground (VLC = 0V).
  • 12. DAC interfacing with 8085 thro 8255