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器件3D模型￥ 7.457
AD5162BRMZ100-RL7 其他数据使用手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
数字电位器
封装:
MSOP-10
描述:
双通道， 256位， SPI数字电位计 Dual, 256-Position, SPI Digital Potentiometer
Pictures:
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技术参数、封装参数在P4
型号编号列表在P4
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AD5162BRMZ100-RL7数据手册
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AN-1291
APPLICATION NOTE
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Digital Potentiometers: Frequently Asked Questions
Rev. A | Page 1 of 18
INTRODUCTION
This application note answers a series of frequently asked
questions (FAQs) about digital potentiometer products from
Analog Devices, Inc. It includes general and specific questions,
including product specific questions. In addition, it provides
digital potentiometer configuration information.
Q: What is a digital potentiometer?
A: A digital potentiometer is a digitally controlled resistor that
changes the impedance between the terminals and the wiper
depending on the code loaded in the RDAC register. Digital
potentiometers avoid the problems that mechanical potentiometers
face, such as physical size and wear and tear, as well as sensitivity to
vibration, temperature, and humidity. A digital potentiometer
can be configured in two different modes: potentiometer mode
and rheostat mode.
Potentiometer mode (see Figure 1) has three terminals:
Terminal A, Terminal B, and Terminal W (wiper).
A
W
B
12052-001
Figure 1. Potentiometer Mode
Rheostat mode has Terminal W hardwired to either Terminal A
or Terminal B (see Figure 2). Some devices offer only two
terminals: Terminal A and Terminal W.
A
W
B
A
W
B
12052-002
Figure 2. Rheostat Mode
Q: Where do I find the evaluation tools and software pertaining
to the evaluation board?
A: The Windows®-compatible evaluation software and the driver
software are included on a CD that comes with the evaluation
board kit. For newer products, the evaluation software and the
driver software information is available on the product page of
the Analog Devices website.
Q: How can I obtain digital potentiometer technical support?
A: EngineerZone is an Analog Devices online support community
with support for the digital potentiometer available in the
Precision DACs community. Customers from all over the world
can post questions, view existing questions and answers, and
review and contribute to ongoing discussions in this community.
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