SNAS449F February 2008 – May 2017 DAC081C081 , DAC081C085
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (continued)
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
訂購信息
12 Device and Documentation Support
12.1 Device Support
12.1.1 Development Support
For development support, see the following:
- 12-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface, DAC121C081
- 12-Bit Micro Pwr DAC w/ I2C-Compatible Interface & External Reference, DAC121C085
- 10-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface, DAC101C081
- 10-Bit Micro Pwr DAC w/ I2C-Compatible Interface & External Reference, DAC101C085
12.1.2 Device Nomenclature
12.1.2.1 Specification Definitions
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DIFFERENTIAL NON-LINEARITY (DNL) is the measure of the maximum deviation from the ideal step size of 1 LSB, which is VREF / 256 = VA / 256.
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DIGITAL FEEDTHROUGH is a measure of the energy injected into the analog output of the DAC from the digital inputs when the DAC output is not updated. It is measured with a full-scale code change on the data bus.
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FULL-SCALE ERROR is the difference between the actual output voltage with a full scale code (FFFh) loaded into the DAC and the value of VA x 255 / 256.
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GAIN ERROR is the deviation from the ideal slope of the transfer function. It can be calculated from Zero and Full-Scale Errors as GE = FSE - ZE, where GE is Gain error, FSE is Full-Scale Error and ZE is Zero Error.
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GLITCH IMPULSEis the energy injected into the analog output when the input code to the DAC register changes. It is specified as the area of the glitch in nanovolt-seconds.
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INTEGRAL NON-LINEARITY (INL)is a measure of the deviation of each individual code from a straight line through the input to output transfer function. The deviation of any given code from this straight line is measured from the center of that code value. The end point method is used. INL for this product is specified over a limited range, per the Electrical Tables.
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LEAST SIGNIFICANT BIT (LSB) is the bit that has the smallest value or weight of all bits in a word. This value is LSB = VREF / 2n where VREF is the supply voltage for this product, and "n" is the DAC resolution in bits, which is 8 for the DAC081C081.
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MAXIMUM LOAD CAPACITANCEis the maximum capacitance that can be driven by the DAC with output stability maintained.
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MONOTONICITYis the condition of being monotonic, where the DAC has an output that never decreases when the input code increases.
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MOST SIGNIFICANT BIT (MSB) is the bit that has the largest value or weight of all bits in a word. Its value is 1/2 of VA.
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MULTIPLYING BANDWIDTH is the frequency at which the output amplitude falls 3dB below the input sine wave on VREFIN with a full-scale code loaded into the DAC.
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POWER EFFICIENCY is the ratio of the output current to the total supply current. The output current comes from the power supply. The difference between the supply and output currents is the power consumed by the device without a load.
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SETTLING TIME is the time for the output to settle to within 1/2 LSB of the final value after the input code is updated.
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TOTAL HARMONIC DISTORTION (THD)is the measure of the harmonics present at the output of the DACs with an ideal sine wave applied to VREFIN. THD is measured in dB.
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WAKE-UP TIME is the time for the output to exit power-down mode. This time is measured from the rising edge of SCL during the ACK bit of the lower data byte to the time the output voltage deviates from the power-down voltage of 0V.
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ZERO CODE ERROR is the output error, or voltage, present at the DAC output after a code of 000h has been entered.
12.2 Related Links
The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy.
Table 5. Related Links
| PARTS | PRODUCT FOLDER | SAMPLE & BUY | TECHNICAL DOCUMENTS | TOOLS & SOFTWARE | SUPPORT & COMMUNITY |
|---|---|---|---|---|---|
| DAC081C081 | Click here | Click here | Click here | Click here | Click here |
| DAC081C085 | Click here | Click here | Click here | Click here | Click here |
12.3 Community Resources
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use.
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TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers.
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Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support.
12.4 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
12.5 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
12.6 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.