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

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

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

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Standard Pack Size
ADC0808CCN/NOPB ADC0808CCN RoHS Status	MDIP	Full production Lead Time: 16 weeks	Distributor Region Qty ARROW Worldwide 169 AVNET-EM Worldwide 105 DIGIKEY Worldwide 233 FARNELL Europe and Asia 243 FUTURE Worldwide 1100 NEWARK Americas 37 RS COMPONENTS Worldwide 51 TAYLOR Americas 47	$2.92 each at 1K+ pcs	rail of 13
ADC0808CCV/NOPB ADC0808CCV RoHS Status	PLCC	Full production Lead Time: 8 weeks	Distributor Region Qty ARROW Worldwide 115 AVNET-EM Worldwide 105 DIGIKEY Worldwide 71 FUTURE Worldwide 453 NEWARK Americas 89 TAYLOR Americas 2	$2.90 each at 1K+ pcs	rail of 35
ADC0808CCVX/NOPB ADC0808CCVX RoHS Status	PLCC	Full production Lead Time: 12 weeks	Distributor Region Qty DIGIKEY Worldwide 0	$2.90 each at 1K+ pcs	reel of 750

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Part Number(s) (NSID)	Top View	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
ADC0808CCN/NOPB ADC0808CCN		MDIP	28	1 1	NA NA	Detail	Download	N/A	NSUZXYYTTE# ADC0808CCN
ADC0808CCV/NOPB ADC0808CCV		PLCC	28	2A 2A	245 245	Detail	Download	N/A	NSUZXYYTTE# ADC0808 CCV
ADC0808CCVX/NOPB ADC0808CCVX		PLCC	28	2A 2A	245 245	Detail	Download	N/A	NSUZXYYTTE# ADC0808 CCV

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.

CAD Symbols and Models Download ADC0808 CAD Symbols

Models N/A

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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All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/packaging/leadfree.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/quality/green.

National's certificate of product compliance is located at RoHS Status.