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AD5160BRJ50-R2 Scheda tecnica(PDF) 1 Page - Analog Devices

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Spiegazioni elettronici  256-Position SPI Compatible Digital Potentiometer
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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256-Position SPI Compatible
Digital Potentiometer
AD5160
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2003 Analog Devices, Inc. All rights reserved.
FEATURES
256-position
End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Compact SOT-23-8 (2.9 mm × 3 mm) package
SPI compatible interface
Power-on preset to midscale
Single supply 2.7 V to 5.5 V
Low temperature coefficient 45 ppm/°C
Low power, IDD = 8 µA
Wide operating temperature –40°C to +125°C
Evaluation board available
APPLICATIONS
Mechanical potentiometer replacement in new designs
Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
GENERAL OVERVIEW
The AD5160 provides a compact 2.9 mm × 3 mm packaged
solution for 256-position adjustment applications. These devices
perform the same electronic adjustment function as mechanical
potentiometers or variable resistors, with enhanced resolution,
solid-state reliability, and superior low temperature coefficient
performance.
The wiper settings are controllable through an SPI compatible
digital interface. The resistance between the wiper and either
end point of the fixed resistor varies linearly with respect to the
digital code transferred into the RDAC latch.
Operating from a 2.7 V to 5.5 V power supply and consuming
less than 5 µA allows for usage in portable battery-operated
applications.
FUNCTIONAL BLOCK DIAGRAM
SPI INTERFACE
WIPER
REGISTER
CS
SDI
CLK
GND
VDD
A
W
B
Figure 1.
PIN CONFIGURATION
A
B
CS
SDI
1
2
3
4
5
8
7
6
W
VDD
GND
CLK
TOP VIEW
(Not to Scale)
AD5160
Figure 2.
Note:
The terms digital potentiometer, VR, and RDAC are used interchangeably.


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