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AD5160 Función - 256-Position SPI-Compatible Digital Potentiometer - Analog Devices

Número de pieza AD5160
Descripción 256-Position SPI-Compatible Digital Potentiometer
Fabricantes Analog Devices 
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AD5160 Hoja de datos, Descripción, Manual
Data Sheet
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
Gain control and offset adjustment
GENERAL DESCRIPTION
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 potentiometers1 or variable resistors but with
enhanced resolution, solid-state reliability, and superior low
temperature coefficient performance.
256-Position SPI-Compatible
Digital Potentiometer
AD5160
FUNCTIONAL BLOCK DIAGRAM
VDD
CS
SDI
CLK
SPI INTERFACE
A
W
WIPER
REGISTER
B
GND
Figure 1.
PIN CONFIGURATION
W1
8A
VDD 2
GND 3
CLK 4
AD5160
TOP VIEW
(Not to Scale)
7B
6 CS
5 SDI
Figure 2.
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.
1 The terms digital potentiometer, VR, and RDAC are used interchangeably.
Rev. C
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2003–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com





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