8-bit Microprocessor Compatible A/D Converters With 8-Channel Multiplexer
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 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.
The design of the ADC0808 ADC0809 has been optimized by incorporating the most desirable aspects of several A/D conversion techniques. The ADC0808 ADC0809 offers high speed, high accuracy, minimal temperature dependence, excellent long-term accuracy and repeatability, and consumes minimal power. These features make this device ideally suited to applications from process and machine control to consumer and automotive applications. For 16-channel multiplexer with common output (sample/hold port) see ADC0816 data sheet. (See AN-247 for more information.)
By National Semiconductor Corporation
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