ADC0809 Datasheet | National Semiconductor

Description The ADC0808, ADC0809 data acquisition ponent is a monolithic CMOS device with an 8-bit analog-to-digital converter, 8-channel multiplexer and microprocessor patible control logic. The 8-bit A/D converter uses successive approximation as the conversion technique. The converter features a high impedance chopper stabilized parator, 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 mon output (sample/hold port) see ADC0816 data sheet. (See AN-247 for more information.) 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 Key Specifications - Resolution - Total Unadjusted Error - Single Supply - Low Power - Conversion Time 8 Bits ±½ LSB and ±1 LSB 5 VDC 15 m W 100 μs Block Diagram See Ordering Information © 2009 National Semiconductor Corporation 5672 .national. ADC0808/ADC0809 Connection Diagrams Dual-In-Line Package Molded Chip Carrier Package Order...