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AD5259EVAL Datasheet

  • AD5259EVAL

  • IRU3039 EVALUATION BOARD USER GUIDE

  • AD

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Nonvolatile, I
2
C Compatible
256-Position, Digital Potentiometer
Preliminary Technical Data
FEATURES
Nonvolatile memoy maintains wiper settings
256-position
Compact MSOP-10 (3 mm 脳 4.9 mm) package
I
2
C廬 compatible interface
V
LOGIC
pin provides increased interface flexibility.
End-to-end resistance 5 k鈩? 10 k鈩? 50 k鈩? 100 k鈩?/div>
Resistance tolerance stored in EEMEM(0.1% accuracy)
Power On EEMEM Refresh Time < 1ms
Software write protect command
Tri-state address decode pins AD0 and AD1
100-year typical data retention at 55擄C
Wide operating temperature 鈥?0擄C to +85擄C
+3V to +5V single-supply
AD5259
parts on one bus, address bits AD0 and AD1 allow up to nine
devices on the same bus.
FUNCTIONAL BLOCK DIAGRAMS
VDD
VLOGIC
DGND
8
DATA
SCL
SDA
I2C
SERIAL
INTERFACE
RDAC1
A1
W1
B1
RDAC EEPROM
RDAC1
REGISTER
8
CONTROL
COMMAND DECODE LOGIC
AD0
AD1
ADDRESS DECODE LOGIC
APPLICATIONS
LCD panel V
COM
adjustment
LCD panel brightness and contrast control
Mechanical potentiometer replacement in new designs
Programmable power supplies
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
Low resolution DAC replacement
Electronics level settings
POWER
ON RESET
CONTROL LOGIC
Figure 1.
W
1
10 A
AD0 2
AD1 3
AD5259
9 B
8 VDD
TOP VIEW
4 (Not to Scale) 7 GND
SDA
6 VLOGIC
SCL 5
GENERAL OVERVIEW
Figure 3. Pinout.
The AD5259 provides a compact nonvolatile 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 and solid-state reliability.
The wiper settings are controllable through an I
2
C compatible
digital interface, which can also be used to read back the wiper
register and EEMEM content. Resistor tolerance is also stored
within EEMEM and can be used to provide an end-to-end
tolerance accuracy of 0.1%. In order to provide added security,
command bits are available to place the part into a write protect
mode in which data can not be written to the EEMEM register.
In addition, a separate V
LOGIC
pin provides the user with
increased interface flexibility. For users who need multiple
Rev. PrJ 7/22/04 | Page 1 of 14
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.
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 2004 Analog Devices, Inc. All rights reserved.

AD5259EVAL 產(chǎn)品屬性

  • 1

  • 編程器，開發(fā)系統(tǒng)

  • 評(píng)估演示板和套件

  • -

  • 數(shù)字電位器

  • -

  • AD5259

  • -

  • -

  • 板

  • AD5259BCPZ5-R7TR-ND - IC POT DGTL 5K 256POS 10LFCSPAD5259BCPZ50-R7TR-ND - IC POT DGTL 50K 256POS 10LFCSPAD5259BCPZ10-R7TR-ND - IC POT DGTL 10K 256POS 10LFCSPAD5259BCPZ100-R7TR-ND - IC POT DGTL 100K 256POS 10LFCSPAD5259BRMZ5-ND - IC POT DGTL 5K 256POS 10-MSOPAD5259BRMZ50-ND - IC POT DGTL 50K 256POS 10-MSOPAD5259BRMZ5-R7-ND - IC POT DGTL 5K 256POS 10MSOPAD5259BRMZ100-R7-ND - IC POT DGTL 100K 256POS 10MSOPAD5259BRMZ10-R7-ND - IC POT DGTL 10K 256POS 10MSOPAD5259BRMZ50-R7-ND - IC POT DGTL 50K 256POS 10MSOP更多...

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