The ADC0801, ADC0802, ADC0803, ADC0804, and ADC0805 devices are CMOS 8-bit successive approximation converters (ADC) 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 ADCs 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
●as a Stand-Alone Deivce
● Differential Analog Voltage Inputs
● Logic Inputs and Outputs Meet Both MOS and
●TTL Voltage-Level Specifications
● Works With 2.5-V (LM336) Voltage Reference
● On-Chip Clock Generator
● 0-V to 5-V Analog Input Voltage Range With
●Single 5-V Supply
● No Zero Adjust Required
● 0.3-Inch 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
