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ADC0808 Converter 8-Bit Analog to Digital


ADC0808 Converter 8-Bit Analog to Digital Features

  • Easy Interface to All Microprocessors
  • Operates Ratiometrically or with 5 VDC or Analog Span Adjusted Voltage Reference
  • No Zero or Full-Scale Adjust Required
  • 8-Channel Multiplexer with Address Logic
  • 0V to VCC Input Range
  • Outputs meet TTL Voltage Level Specifications
  • ADC0808 Equivalent to MM74C949
  • ADC0809 Equivalent to MM74C949-1

Specifications

  • Resolution: 8 Bits
  • Total Unadjusted Error: ±½ LSB and ±1 LSB
  • Single Supply: 5 VDC
  • Low Power: 15 mW
  • Conversion Time: 100 μs

300

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The ADC0808, ADC0809 data acquisition component is a monolithic CMOS device with an 8-bit analog-to-digital converter, 8-channel multiplexer and microprocessor-compatible control logic. The 8-bit A/D converter uses successive approximation as the conversion technique. The converter features a high-impedance chopper stabilized comparator, a 256R voltage divider with analog switch tree and a successive approximation register. The 8-channel multiplexer can directly access any of the 8-single-ended analog signals.

The device eliminates the need for external zero and full-scale adjustments. Easy interfacing to microprocessors is provided by the latched and decoded multiplexer address inputs and latched TTL TRI-STATE outputs.

 

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