AD7249
PRODUCTIONLC2MOS Dual 12-Bit Serial DACPORT
- Part Models
- 7
- 1ku List Price
- Starting From $23.33
Part Details
- Two 12-Bit CMOS DAC Channels with On-Chip Voltage Reference
- Three Selectable Output Ranges per Channel -5 V to + 5 V, 0 V to +5 V, 0 V to +10 V
Output Amplifiers
- Serial Interface
- 125 kHz DAC Update Rate
- Small Size: 16-Lead DIP or SOIC
- Low Power Dissipation
The AD7249 DACPORT® contains a pair of 12-bit, voltage-output, digital-to-analog converters with output amplifiers and Zener voltage reference on a monolithic CMOS chip. No external trims are required to achieve full specified performance.
The output amplifiers are capable of developing +10 V across a 2 k Ω load. The output voltage ranges with single supply operation are 0 V to +5 V or 0 V to +10 V, while an additional bipolar ±5V output range is available with dual supplies. The ranges are selected using the internal gain resistor.
Interfacing to the AD7249 is serial, minimizing pin count and allowing a small package size. Standard control signals allow interfacing to most DSP processors and microcontrollers. The data stream consists of 16 bits, DB15 to DB13 are don't care bits, the 13th bit (DB12) is used as the channel select bit and the remaining 12 bits (DB11 to DB0) contain the data to update the DAC. The 16-bit data word is clocked into the input register on each falling SCLK edge.
The data format is natural binary in both unipolar ranges, while either offset binary or twos complement format may be selected in the bipolar range. A CLR function is provided which sets the output to 0 V in both unipolar ranges and in the twos complement bipolar range, while with offset binary data format, the output is set to -REFIN. This function is useful as a power-on reset as it allows the outputs to be set to a known voltage level.
The AD7249 features a serial interface which allows easy connection to both microcomputers and 16-bit digital signal processors with serial ports. The serial data may be applied at rates up to 2 MHz allowing a DAC update rate of 125 kHz.
The AD7249 is fabricated on linear compatible CMOS (LC2MOS), an advanced, mixed technology process. It is packaged in 16-pin DIP and 16-pin SOIC packages.
DACPORT is a registered trademark of Analog Devices, Inc.
Documentation
Data Sheet 1
Application Note 3
Solutions Bulletin & Brochure 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD7249ANZ | 16-Lead PDIP | ||
| AD7249ARZ | 16-Lead SOIC Wide | ||
| AD7249ARZ-REEL | 16-Lead SOIC Wide | ||
| AD7249BNZ | 16-Lead PDIP | ||
| AD7249BRZ | 16-Lead SOIC Wide | ||
| AD7249BRZ-REEL | 16-Lead SOIC Wide | ||
| AD7249SQ | 16-Lead CerDIP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 29, 2021 - 21_0033 Assembly Site Transfer for 14/16L 300_MIL PDIP to Cirtek |
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| AD7249ANZ | PRODUCTION | |
| AD7249BNZ | PRODUCTION | |
|
Feb 8, 2010 - 04_0080 Qualification of the 8" C6 and Q Wafer Fab Processes at Analog Devices, Limerick, Ireland. |
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| AD7249ANZ | PRODUCTION | |
| AD7249ARZ | PRODUCTION | |
| AD7249BNZ | PRODUCTION | |
| AD7249BRZ | PRODUCTION | |
| AD7249BRZ-REEL | PRODUCTION | |
| AD7249SQ | ||
|
Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad |
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| AD7249ANZ | PRODUCTION | |
| AD7249BNZ | PRODUCTION | |
|
Jul 21, 2014 - 13_0297 Qualification of ASE Chungli, as an Alternate Assembly Site for Select 16L, 20L, 24L and 28L SOICW Packages |
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| AD7249ARZ | PRODUCTION | |
| AD7249ARZ-REEL | PRODUCTION | |
| AD7249BRZ | PRODUCTION | |
| AD7249BRZ-REEL | PRODUCTION | |
|
Aug 4, 2010 - 10_0117 Halogen Free Material Change for SOIC_W Products at Carsem |
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| AD7249ARZ | PRODUCTION | |
| AD7249ARZ-REEL | PRODUCTION | |
| AD7249BRZ | PRODUCTION | |
| AD7249BRZ-REEL | PRODUCTION | |
|
Nov 7, 2012 - 12_0199 Qualification of New Conductive Silver-Filled Glass Die Attach Adhesive for Cerdip and Ceramic Flatpack (Cerpack) Packages. |
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| AD7249SQ | ||
|
Nov 9, 2011 - 11_0050 Transfer of ADI Hermetics Assembly location from Paranaque, Manila to General Trias, Cavite Philippines |
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| AD7249SQ | ||
|
Nov 9, 2011 - 11_0182 Test Site Transfer from Analog Devices Philippines Inc in Paranaque to Analog Devices General Trias in Cavite, Philippines |
||
| AD7249SQ | ||
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| AD5722R | PRODUCTION | Complete, Dual, 12-Bit, Serial Input, Unipolar/Bipolar, Voltage Output DAC |
Tools & Simulations
Precision DAC Error Budget Tool
The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.
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