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 ADC0808▲ Improved Conversion Accuracy

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

Datasheets

Title		Size	Date	Other Language
	ADC0809 8-bit Microprocessor Compatible A/D Converters With 8-Channel Multiplexer	370 Kbytes	8-Jul-09

Application Notes

Title		Size	Date	Other Language
	AN-247: Application Note 247 Using the ADC0808/ADC0809 8-Bit MicroP Compatible A/D Converters with 8-Channel Analog Multiplexer	547 Kbytes	3-Oct-02
	AN-258: Application Note 258 Data Acquisition Using the ADC0816 and ADC0817 8-Bit A/D Converter with On-Chip 16 Channel Multiplexer	683 Kbytes	4-Oct-04
	AN-280: Application Note 280 A/D Converters Easily Interface with 70 Series Microprocessors	134 Kbytes	4-Oct-04

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC0809CCN/NOPB ADC0809CCN RoHS Status	MDIP	Full production Lead Time: 12 weeks	Distributor Region Qty ARROW Worldwide 481 AVNET-EM Worldwide 369 BRITESTONE South Korea 62 DIGI-KEY Worldwide 260 FARNELL Europe and Asia 260 MOUSER Worldwide 323 NEWARK Americas 11 RS COMPONENTS Worldwide 116 RSL MICRO Asia Pacific 4030 TAYLOR Americas 481	$1.69 each at 1K+ pcs	rail of 13
ADC0809CCV/NOPB ADC0809CCV RoHS Status	PLCC	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 140 AVNET-EM Worldwide 140 CEAC Asia Pacific 280 DIGI-KEY Worldwide 252 MOUSER Worldwide 170 TAYLOR Americas 154	$2.63 each at 1K+ pcs	rail of 35
ADC0809CCVX/NOPB ADC0809CCVX RoHS Status	PLCC	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 750 AVNET-EM Worldwide 720 CEAC Asia Pacific 1500 DIGI-KEY Worldwide 0 TAYLOR Americas 750	$2.63 each at 1K+ pcs	reel of 750

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

Moisture Sensitivity Level Data for ADC0809.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for ADC0809 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
ADC0809CCN/NOPB ADC0809CCN	4132.449 4140	MDIP	28	1 1	NA NA	Detail	Download	N/A	NSUZXYYTTE# ADC0809CCN
ADC0809CCV/NOPB ADC0809CCV	1106.72 1110.001	PLCC	28	2A 2A	245 245	Detail	Download	N/A	NSUZXYYTTE# ADC0809 CCV
ADC0809CCVX/NOPB ADC0809CCVX	1106.72 1110.001	PLCC	28	2A 2A	245 245	Detail	Download	N/A	NSUZXYYTTE# ADC0809 CCV

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

Moisture Sensitivity Level Data for ADC0809.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for ADC0809 is located at RoHS Status.

CAD Symbols and Models Download ADC0809 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC0809CCN	CMOS	0	20300	0	0	2785000	2	790251354
ADC0809CCV	CMOS	0	20300	0	0	2785000	2	790251354
ADC0809CCVX	CMOS	0	20300	0	0	2785000	2	790251354

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.

For more information on Reliability Metrics, please click here.

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

Moisture Sensitivity Level Data for ADC0809.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for ADC0809 is located at RoHS Status.