ADC0804 8-Bit A/D Converter

Model : DIC-00083

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8-Bit μP Compatible A/D Converter.

The ADC0804 is a CMOS 8-bit successive approximation A/D converter that use a differential potentiometric ladder—similar to the 256R products. These converters are designed to allow operation with the NSC800 and INS8080A derivative control bus with TRI-STATE® output latches directly driving the data bus. These A/Ds appear like memory locations or I/O ports to the microprocessor and no interfacing logic is needed.Differential analog voltage inputs allow increasing the common-mode rejection and offsetting the analog zero input voltage value. In addition, the voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of resolution.



  • Compatible with 8080 μP derivatives—no interfacing logic needed - access time - 135 ns
  • Easy interface to all microprocessors, or operates “stand alone”
  • Differential analog voltage inputs
  • Logic inputs and outputs meet both MOS and TTL voltage level specifications
  • Works with 2.5V (LM336) voltage reference
  • On-chip clock generator
  • 0V to 5V analog input voltage range with single 5V supply
  • No zero adjust required
  • 0.3" standard width 20-pin DIP package
  • 20-pin molded chip carrier or small outline package
  • Operates ratiometrically or with 5 VDC, 2.5 VDC, or analog span adjusted voltage reference


Key Specifications

  • Resolution 8 bits
  • Total error ±1⁄4 LSB, ±1⁄2 LSB and ±1 LSB
  • Conversion time 100 μs
  • Maximum Supply Voltage (VCC) : 6.5V
  • Logic Control Inputs: −0.3V to +18V
  • Storage Temperature Range −65°C to +150°C
  • Package Dissipation at TA=25°C 875 mW
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