Features and Benefits
- 2.5 V to 5.5 V supply operation
- Fast parallel interface (17 ns write cycle)
- Update rate of 20.4 MSPS
- INL of ±1 LSB for 12-bit DAC
- ±10 V reference input
- 10 MHz multiplying bandwidth
- Extended temperature range:
–40°C to +125°C
- See data sheet for additional features
The AD5424 / AD5433 / AD5445 are CMOS 8-, 10-, and 12-bit current output digital-to-analog converters (DACs), respectively. These devices operate from a 2.5 V to 5.5 V power supply, making them suitable for battery-powered applications and many other applications. These DACs utilize data readback, allowing the user to read the contents of the DAC register via the DB pins. On power-up, the internal register and latches are filled with 0s and the DAC outputs are at zero scale.
As a result of manufacturing with a CMOS submicron process, they offer excellent 4-quadrant multiplication characteristics, with large signal multiplying bandwidths of up to 10 MHz.
The applied external reference input voltage (VREF) determines the full-scale output current. An integrated feedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier.
While these devices are upgrades of the AD5424 / AD5433 / AD5445 in multiplying bandwidth performance, they have a latched interface and cannot be used in transparent mode.
The AD5424 is available in a small, 20-lead LFCSP and a small, 16-lead TSSOP, while the AD5433 and AD5445 DACs are available in a small, 20-lead LFCSP and a small, 20-lead TSSOP.
The EVAL-AD5445SDZ evaluation board is available for evaluating DAC performance. For more information, see the UG-333 evaluation board user guide.
- Portable battery-powered applications
- Waveform generators
- Analog processing
- Instrumentation applications
- Programmable amplifiers and attenuators
- Digitally controlled calibration
- Programmable filters and oscillators
- Composite video
- Gain, offset, and voltage trimming
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The Evaluation board for the AD5445 contains a SDP-B connection and software allowing the AD5445 to be controlled from a SDP-B board.
This evaluation kit can also be used for the AD5424 and AD5433 generics.
The SDP Controller board is a separate list item in the ordering guide below (EVAL-SDP-CB1Z). If you have not previously purchased an SDP Controller board, please do so to ensure a full evaluation setup.
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-137: A Digitally Programmable Gain and Attenuation Amplifier Design9/26/200252 kB
UG-333: Evaluating the AD5445 Parallel Input, Current Output DAC8/6/2012315 kB
Multiplying DACs Flexible Building Blocks11/30/20152 M
Digital to Analog Converters ICs Solutions Bulletin, Volume 11, Issue 511/9/2011
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|
|AD5445YCPZ||Material Declaration||Reliability Data||20-Lead LFCSP (4mm x 4mm w/ EP)|
|AD5445YRUZ||Material Declaration||Reliability Data||20-Lead TSSOP|
|AD5445YRUZ-REEL||Material Declaration||Reliability Data||20-Lead TSSOP|
|AD5445YRUZ-REEL7||Material Declaration||Reliability Data||20-Lead TSSOP|
|Wafer Fabrication Data|
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Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.