Features Easy interface to all microprocessors Operates ratiometrically or with 5 VDC voltage reference No zero or full-scale adjust required 4-channel or 8-channel multiplexer with address logic Internal clock 0V to 5V input range with single 5V power supply 0.3″ standard width 20-pin or 24-pin DIP 28 Pin Molded Chip Carrier Package Description The ADC0844 and ADC0848 are CMOS 8-bit successive approximation A/D converters with versatile analog input multiplexers. The 4-channel or 8-channel multiplexers can be software configured for single-ended, differential or pseudo-differential modes of operation. The differential mode provides low frequency input common mode rejection and allows offsetting the analog range of the converter. In addition, the A/D's reference can be adjusted enabling the conversion of reduced analog ranges with 8-bit resolution. The A/Ds are designed to operate from the control bus of a wide variety of microprocessors. TRI-STATE output latches that directly drive the data bus permit the A/Ds to be configured as memory locations or I/O devices to the microprocessor with no interface logic necessary. Key Specification Resolution 8 Bits Total Unadjusted Error ±½ LSB and ± 1 LSB Single Supply 5 VDC Low Power 15 mW Conversion Time 40 μs

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

Datasheets

Title		Size	Date	Other Language
	ADC0844 8-Bit Microprocessor Compatible A/D Converter with Multiplexer Option	567 Kbytes	2-Dec-08

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC0844CCN/NOPB ADC0844CCN RoHS Status	MDIP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 252 BRITESTONE South Korea 8678 DIGI-KEY Worldwide 95 FARNELL Europe and Asia 205 NEWARK Americas 54 RS COMPONENTS Worldwide 35 TAYLOR Americas 252	$2.46 each at 1K+ pcs	rail of 18

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
ADC0844BCJ	ADC0844CCN	NATIONAL SEMICONDUCTOR	03 Mar 2006
ADC0844BCN	NONE	NONE	08 Dec 1998
ADC0844CCJ	ADC0844CCN	NATIONAL SEMICONDUCTOR	03 Mar 2006

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 ADC0844.

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 ADC0844 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
ADC0844CCN/NOPB ADC0844CCN	1424.649 1429.999	MDIP	20	1 1	NA NA	Detail	Download	N/A	NSUZXYYTTE# ADC0844CCN

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 ADC0844.

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 ADC0844 is located at RoHS Status.

CAD Symbols and Models Download ADC0844 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC0844CCN	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 ADC0844.

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 ADC0844 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
ADC0844BCJ	ADC0844CCN	NATIONAL SEMICONDUCTOR	03 Mar 2006
ADC0844BCN	NONE	NONE	08 Dec 1998
ADC0844CCJ	ADC0844CCN	NATIONAL SEMICONDUCTOR	03 Mar 2006