AD7549: LC2MOS Dual 12-Bit µP-Compatible DAC Scanned Data Sheet (Rev. A)6/25/2015495 kB
AD7549: Military Data Sheet1/1/2000
Dual 12-Bit, High Bandwidth, Multiplying DAC with 4 Quadrant Resistors and Parallel Interface
Features and Benefits
- Two Double Bufered 12-bit DACs
- 4-Quadrant Multiplication
- Low Gain Error (3 LSBs max)
- DAC Ladder Resistance Matching: 1%
- Space Saving Skinny DIP and Surface Mount Packages
- Latch-Up Proof
- Extended Temperature Range Operation
The AD7549 is a monolithic dual, 12-bit, current output D/A converter. It is packaged in both 0.3" wide 20-pin DIPs and in 20-terminal surface mount packages. Both DACs provide four quadrant multiplication capabilities with a separate reference input and feedback resistor for each DAC. The monolithic construction ensures excellent thermal tracking and gain error tracking between the two DACs.
The DACs in the AD7549 are each loaded in three 4-bit nibbles. The control logic is designed for easy processor interfacing. Input and DAC register loading is accomplished using address lines A0, A1, A2, and CS, WR lines. A logic high level on the CLR input clears all registers. Both DACs may be simultaneously update using the UPD input.
- Programmable Filters
- Automatic test equipment
- Microcomputer based process control
- Audio systems
- Programmable power supplies
- Synchro Applications
Product Lifecycle Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Documentation & Resources
AN-912: Driving a Center-Tapped Transformer with a Balanced Current-Output DAC (Rev. 0)5/21/2007246 kB
AN-320A: CMOS Multiplying DACs and Op Amps Combine to Build Programmable Gain Amplifier, Part 110/15/20041295 kB
AN-326: Interfacing the AD7549 to the MCS-48 and MCS-51 Microcomputer Families9/30/2002334 kB
AN-325: 12-Bit Analog I/O Port Uses AD7549 Dual 12-Bit DAC and 8051 Microcomputer9/30/2002318 kB
AN-137: A Digitally Programmable Gain and Attenuation Amplifier Design9/26/200252 kB
AN-206: CMOS Multiplying DAC Based Panning Circuit Provides Almost Constant Output Power1/1/2000142 kB
AN-225: 12-Bit Voltage-Output DACs for Single-Supply 5V and 12V Systems1/1/2000237 kB
AN-209: 8th Order Programmable Low-Pass Analog Filter Using Dual 12-Bit CMOS Multiplying DACs1/1/2000401 kB
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.
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 Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|5962-8876502RX||Material Declaration||Reliability Data||20-Lead CerDIP|
|AD7549BQ||Material Declaration||Reliability Data||20-Lead CerDIP|
|AD7549JNZ||Material Declaration||Reliability Data||20-Lead PDIP|
|AD7549JPZ||Material Declaration||Reliability Data||20-Lead Flatpack|
|AD7549JPZ-REEL||Material Declaration||Reliability Data||20-Lead Flatpack|
|AD7549KNZ||Material Declaration||Reliability Data||20-Lead PDIP|
|AD7549KPZ||Material Declaration||Reliability Data||20-Lead Flatpack|
|Wafer Fabrication Data|
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