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ADC0803/0804
General description
The ADC0803 family is a series of three CMOS 8-bit successive approximation A/D converters using a resistive ladder and capacitive array together with an auto-zero comparator. These converters are designed to operate with microprocessor-controlled buses using a minimum of external circuitry. The 3-State output data lines can be connected directly to the data bus.
The differential analog voltage input allows for increased common-mode rejection and provides a means to adjust the zero-scale offset. Additionally, the voltage reference input provides a means of encoding small analog voltages to the full 8 bits of resolution.
Features
- Compatible with most microprocessors
- Differential inputs
- 3-State outputs
- Logic levels TTL and MOS compatible
- Can be used with internal or external clock
- Analog input range 0 V to VCC
- Single 5 V supply
- Guaranteed specification with 1 MHz clock
Applications
- Transducer-to-microprocessor interface
- Digital thermometer
- Digitally-controlled thermostat
- Microprocessor-based monitoring and control systems
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