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AD5392BSTZ-3 用户编程技术手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
DA转换器
封装:
LQFP-52
描述:
40通道， 3 V / 5 V单电源，12位， denseDAC 40-Channel, 3 V/5 V, Single-Supply 12-Bit, denseDAC
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AD5392BSTZ-3数据手册
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AN-1230 Application Note
Rev. B | Page 2 of 2
This design uses two separate 5.0 V power supplies―one to
power the voltage reference and the analog portion of the
AD5390/AD5391/AD5392 (AVDD) and the other to power the
digital portion of the AD5390/AD5391/AD5392 (DVDD). For
best performance, a linear regulator should always be used to
power the analog portion of the circuit. If a switching regulator
is used to power the digital portion, care should be taken to
minimize switching noise at the DVDD supply pins. Additional
decoupling using a series connected ferrite bead may be required.
The AD5390/AD5391/AD5392 digital (DVDD) power supply
can operate off a 3 V or 5 V supply, which provides for maximum
flexibility when interfacing to digital components. Both supplies
can be tied together to a common 5 V supply provided that
supply is derived from a linear regular. Refer to the ADIsimPower™
tool for guidance on the power supply designs.
It is recommended to decouple each power pin close to the
device with a 0.1 μF ceramic and 10 μF tantalum capacitor. In
this application, the reference for the AD5390/AD5391/AD5392
is provided externally from either an ADR421 or ADR431 2.5 V
reference. The ADR431 provides a lower output voltage noise
specification for applications where this specification is important.
The reference should be decoupled at the REFOUT/REFIN pin
of the device with a 0.1 μF capacitor.
COMMON VARIATIONS
A variation of this circuit is the AD5390/AD5391/AD5392 with
the ADR280 1.2 V reference where all other connections and
components are the same as those outlined previously.
LEARN MORE
ADIsimPower Design Tool.
Kester, Walt. 2005. The Data Conversion Handbook. Analog
Devices. See chapters 3 and 7.
MT-015 Tutorial, Basic DAC Architectures II: Binary DACs.
Analog Devices.
MT-031 Tutorial, Grounding Data Converters and Solving the
Mystery of AGND and DGND. Analog Devices.
MT-101 Tutorial, Decoupling Techniques. Analog Devices.
Voltage Reference Wizard Design Tool
Data Sheets and Evaluation Boards
AD5390 Data Sheet.
AD5391 Data Sheet.
AD5392 Data Sheet.
ADR421 Data Sheet.
ADR431 Data Sheet.
AD5390/AD5391/AD5392 Evaluation Board.
REVISION HISTORY
6/13—Rev. A. to Rev. B
Changed Document Title from CN0029 to
AN-1230 .............................................................................. Universal
6/09—Rev. 0 to Rev. A
Updated Format .................................................................. Universal
10/08—Revision 0: Initial Version
©2008–2013 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
AN08251-0-6/13(B)
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