Features Total Ionizing Dose 100 krad(Si) Single Event Latch-up 120 MeV-cm 2/mg Guaranteed Monotonicity Low Power Operation Rail-to-Rail Voltage Output Power-on Reset to Zero Volts Output SYNC Interrupt Facility Wide power supply range (+2.7 V to +5.5 V) Small Packages Power Down Feature Description The DAC121S101 is a full-featured, general purpose 12-bit voltage-output digital-to-analog converter (DAC) that can operate from a single +2.7 V to 5.5 V supply and consumes just 177 µA of current at 3.6 V. The on-chip output amplifier allows rail-to-rail output swing and the three wire serial interface operates at clock rates up to 20 MHz over the specified supply voltage range and is compatible with standard SPI, QSPI, MICROWIRE and DSP interfaces. The supply voltage for the DAC121S101 serves as its voltage reference, providing the widest possible output dynamic range. A power-on reset circuit ensures that the DAC output powers up to zero volts and remains there until there is a valid write to the device. A power-down feature reduces power consumption to less than a microWatt. The low power consumption and small packages of the DAC121S101 make it an excellent choice for use in battery operated equipment. The DAC121S101 operates over the extended temperature range of -55°C to +125°C. Key Specification Resolution 12 bits DNL +0.21, -0.10 LSB (typ) Output Settling Time 12.5 µs (typ) Zero Code Error 2.1 mV (typ) Full-Scale Error −0.04 %FS (typ) Power Dissipation Normal Mode 0.52 mW (3.6 V) / 1.19 mW (5.5 V) typ Pwr Down Mode 0.014 µW (3.6 V) / 0.033 µW (5.5 V) typ Applications Battery-Powered Instruments Digital Gain and Offset Adjustment Programmable Voltage & Current Sources Programmable Attenuators

Also Recommended ADC088S102 For 8 Bits ADC108S102 For 10 Bits ADC128S022 For Speeds From 50Ksps To 200Ksps ADC128S052 For Speeds From 200Ksps To 500Ksps ADC128S102QML Space Qualified Version

Design Tools Title Size Date DAC121S101WGRQV SEE IEEE TNS Paper 795 Kbytes 11-Aug-2010 DAC121S101WGRQV SEE Report 1135 Kbytes 11-Aug-2010

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

Parameters Values Resolution 12 bits Pin and Function Compatible Family None Channels 1 Channels Interface Type Serial Settling Time 12500 ns INL (LSB) +/- 2.6 DNL (LSB) -0.1 Power Down, typ. at 3.6V 0.14 uW Oper Pwr typ, 3.6V, 30/0.4MHz SPI/I2C 0.64 mW PowerWise Rating 1 6.5 pJ/conv Reference Source Internal Max Supply Voltage 5.5 Volt Min Supply Voltage 2.7 Volt Temperature Min -55 deg C Temperature Max 125 deg C OtherSupply Voltage 4.5V to 5.5V Data Converter Type DAC Automotive No PowerWise Yes Radiation Performance - SEL (MeV) 120 Radiation Performance - Total Dose (TID) 100 Krad

Datasheets

Title		Size	Date	Other Language
	DAC121S101QML 12-Bit Micro Power Digital-to-Analog Converter with Rail-to-Rail Output	502 Kbytes	6-May-10

Application Notes

Title		Size	Date	Other Language
	AN-2001: Application Note 2001 Daisy Chaining Precision DACs	141 Kbytes	25-Sep-09

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DAC121S101WGMPR RoHS Status	CERPACK	Custom / Full Production Lead Time: N/A	Contact your distributor	CALL	tray of N/A
DAC121S101WGRQV RoHS Status	CERPACK	Full production Lead Time: N/A	Contact your distributor	CALL	tray of 54
DAC121S101WGMLS RoHS Status	CERPACK	Full production Lead Time: N/A	Contact your distributor	CALL	tray of N/A

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 DAC121S101QML.

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 DAC121S101QML is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
DAC121S101CVAL	12-Bit Micro Power Digital-to-Analog Converter	Full production	Contact your distributor	CALL	1
Click here to Order Description: The DAC121S101CVAL Design Kit populated with a ceramic sample is designed to ease evaluation and design-in of the National Semiconductor DAC121S101WGRQV 12-bit Micro-Power Digital-to-Analog Converters with Rail-to-Rail Output. Replace with: The evaluation board can be used in Stand-Alone mode, suitable test equipment, such as a pattern generator and signal analyzer, can be used with the board to evaluate the DAC121S101 performance.

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
DAC121S101WGMPR	241.092	CERPACK	10	1	NA	Detail	N/A	N/A	NS ZSSXXYYA DAC121S101 WGMPR ES
DAC121S101WGRQV	241.092	CERPACK	10	1	NA	Detail	N/A	N/A	NSZSSXXYYA DAC121S101 WGRQV Q 5962R07226 01VZA
DAC121S101WGMLS	241.092	CERPACK	10	1	NA	Detail	N/A	N/A	NSZSSXXYYA DAC121S101 WGMLS

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 DAC121S101QML.

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 DAC121S101QML is located at RoHS Status.

Design Tools

Title	Size	Date
Space Level Evaluation Board User Guide
DAC121S101WGRQV SEE IEEE TNS Paper
DAC121S101WGRQV SEE Report

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
DAC121S101WGMPR	CMOS7	0	21301	0	0	1584000	3	449464325

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 DAC121S101QML.

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 DAC121S101QML is located at RoHS Status.