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 Description 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.) Key Specification Resolution 8 Bits Total Unadjusted Error ±½ LSB and ±1 LSB Single Supply 5 VDC Low Power 15 mW Conversion Time 100 μs

Also Recommended ADC088S102▲ Sample Rate Up To 1 MSPS MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	ADC0808/ADC0809 8-Bit μP Compatible A/D Converters with 8-Channel Multiplexer	370 Kbytes	8-Jul-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-247: Application Note 247 Using the ADC0808/ADC0809 8-Bit µP Compatible A/D Converters with 8-Channel Analog Multiplexer	547 Kbytes	3-Oct-02
	AN-280: AN-280 A/D Converters Easily Interface with 70 Series Microprocessors	134 Kbytes	4-Oct-04

More Application Notes

Title		Size	Date	Other Language
	AN-276: Application Note 276 A New, Low-Cost, Sampled-Data, 10-Bit CMOS A/D Converter	108 Kbytes	2-May-04
	AN-1525: Application Note 1525 Single Supply Operation of the DAC0800 and DAC0802	465 Kbytes	15-Sep-06	中文
	AN-281: AN-281 Data Acquisition Using INS8048	129 Kbytes	4-Oct-04
	AN-233: Application Note 233 The A/D Easily Allows Many Unusual Applications	60 Kbytes	3-Oct-02	日本語
	AN-294: Application Note 294 Special Sample and Hold Techniques	233 Kbytes	4-Oct-04
	AN-271: Application Note 271 Applying the New CMOS MICRO-DAC	230 Kbytes	4-Oct-04	日本語
	AN-301: Application Note 301 Signal Conditioning for Sophisticated Transducers	579 Kbytes	2-Oct-02

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC0808CCN	CMOS	0	19715	0	0	2605000	2	739175862
ADC0808CCV	CMOS	0	19715	0	0	2605000	2	739175862
ADC0808CCVX	CMOS	0	19715	0	0	2605000	2	739175862

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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