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AD5161BRM50 Datasheet

  • AD5161BRM50

  • 256-Position SPI/I2C Selectable Digital Potentiometer

  • 20頁

  • AD

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256-Position SPI/I
2
C Selectable
Digital Potentiometer
AD5161
FEATURES
256-position
End-to-end resistance 5 k鈩? 10 k鈩? 50 k鈩? 100 k鈩?/div>
Compact MSOP-10 (3 mm 脳 4.9 mm) package
Pin selectable SPI/I
2
C compatible interface
Extra package address decode pin AD0
Full read/write of wiper register
Power-on preset to midscale
Single supply 2.7 V to 5.5 V
Low temperature coefficient 45 ppm/擄C
Low power, I
DD
= 8 碌A(chǔ)
Wide operating temperature 鈥?0擄C to +125擄C
SDO output allows multiple device daisy-chaining
Evaluation board available
FUNCTIONAL BLOCK DIAGRAM
V
DD
SDI/SDA
CLK/SCL
DIS
CS/AD0
SPI OR
INTERFACE
W
I
2
C
SDO/NC
A
WIPER
REGISTER
B
GND
Figure 1.
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
PIN CONFIGURATION
A 1
B 2
CS/ADO 3
SDI/SDA 5
10 W
AD5161
TOP VIEW
SDO/NC 4 (Not to Scale) 7 GND
6 CLK/SCL
9 VDD
8 DIS
GENERAL OVERVIEW
The AD5161 provides a compact 3 mm 脳 4.9 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 a pin selectable SPI
or I
2
C compatible digital interface, which can also be used to
read back the wiper register content. When the SPI mode is
used, the device can be daisy-chained (SDO to SDI), allowing
several parts to share the same control lines. In the I
2
C mode,
address pin AD0 can be used to place up to two devices on the
same bus. In this same mode, command bits are available to
reset the wiper position to midscale or to shut down the device
into a state of zero power consumption.
Operating from a 2.7 V to 5.5 V power supply and consuming
less than 5 碌A(chǔ) allows for usage in portable battery-operated
applications.
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.
Figure 2.
Note:
The terms
digital potentiometer, VR,
and
RDAC
are used interchangeably.
Purchase of licensed I
2
C components of Analog Devices or one of its sublicensed
Associated Companies conveys a license for the purchaser under the Philips I
2
C
Patent Rights to use these components in an I
2
C system, provided that the system
conforms to the I
2
C Standard Specification as defined by Philips.
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
漏 2003 Analog Devices, Inc. All rights reserved.

AD5161BRM50 產(chǎn)品屬性

  • 50

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 數(shù)字電位器

  • -

  • 256

  • 50k

  • 1

  • 標(biāo)準(zhǔn)值 45 ppm/°C

  • 易失

  • I²C，SPI

  • 2.7 V ~ 5.5 V

  • -40°C ~ 125°C

  • 表面貼裝

  • 10-TFSOP，10-MSOP（0.118"，3.00mm 寬）

  • 10-MSOP

  • 管件

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