Features Serial I/O (MICROWIRE, SPI and QSPI Compatible) Power down mode Programmable acquisition time Variable digital output word length and format No zero or full scale adjustment required 0V to 5V analog input range with single 5V power supply Description NOTE: Some device/package combinations are obsolete and are described and shown here for reference only. See our web site for product availability. The ADC12130, ADC12132 and ADC12138 are 12-bit plus sign successive approximation Analog-to-Digital converters with serial I/O and configurable input multiplexer. The ADC12132 and ADC12138 have a 2 and an 8 channel multiplexer, respectively. The differential multiplexer outputs and ADC inputs are available on the MUXOUT1, MUXOUT2, A/DIN1 and A/DIN2 pins. The ADC12130 has a two channel multiplexer with the multiplexer outputs and ADC inputs internally connected. The ADC12130 family is tested and specified with a 5 MHz clock. On request, these ADCs go through a self calibration process that adjusts linearity, zero and full-scale errors to typically less than ±1 LSB each. The analog inputs can be configured to operate in various combinations of single-ended, differential, or pseudo-differential modes. A fully differential unipolar analog input range (0V to +5V) can be accommodated with a single +5V supply. In the differential modes, valid outputs are obtained even when the negative inputs are greater than the positive because of the 12-bit plus sign output data format. The serial I/O is configured to comply with NSC MICROWIRE ™. For voltage references, see the LM4040, LM4050 or LM4041. Key Specification Resolution 12-bit plus sign ■ 12-Bit plus sign conversion time 8.8 µs (max) ■ 12-Bit plus sign throughput time 14 µs (max) ■ Integral Linearity Error ±2 LSB (max) ■ Single Supply 3.3V or 5V ±10% ■ Power Consumption     +3.3V 15 mW (max)   +3.3V power down 40 μW (typ)   +5V 33 mW (max)   +5V power down 100 μW (typ) Applications Pen-based computers Digitizers Global positioning systems

Also Recommended ADC12038▲ Better Linearity (+/- 1 LSB)

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

Datasheets

Title		Size	Date	Other Language
	ADC12138 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converter with MUX and Sample/Hold	974 Kbytes	8-Sep-08	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
ADC12138CIMSA/NOPB ADC12138CIMSA RoHS Status	SSOP-EIAJ	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1515 DIGI-KEY Worldwide 0 MOUSER Worldwide 138 ROCELEC Americas 17 TAYLOR Americas 1515	$3.70 each at 1K+ pcs	rail of 47
ADC12138CIWM/NOPB ADC12138CIWM RoHS Status	SOIC WIDE	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1304 AVNET-EM Worldwide 17 DIGI-KEY Worldwide 212 FARNELL Europe and Asia 81 MOUSER Worldwide 83 RS COMPONENTS Worldwide 1 TAYLOR Americas 1304	$3.92 each at 1K+ pcs	rail of 26

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
ADC12138CIN	ADC12038CIWM	NATIONAL SEMICONDUCTOR	16 Nov 2008

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 ADC12138.

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 ADC12138 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
ADC12138CIMSA/NOPB ADC12138CIMSA	256.104 250.002	SSOP-EIAJ	28	3 4	260 235	Detail	Download	N/A	NSUZXYTTE# ADC12138 CIMSA
ADC12138CIWM/NOPB ADC12138CIWM	708.559 709.999	SOIC WIDE	28	3 3	260 260	Detail	Download	N/A	NSUZXYTTE# ADC12138 CIWM

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 ADC12138.

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 ADC12138 is located at RoHS Status.

CAD Symbols and Models Download ADC12138 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
ADC12138CIMSA	CS150	1	16290	62	0	1157500	4	328443785
ADC12138CIWM	CS150	1	16290	62	0	1157500	4	328443785

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 ADC12138.

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 ADC12138 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
ADC12138CIN	ADC12038CIWM	NATIONAL SEMICONDUCTOR	16 Nov 2008