Datasheet > AD5259EVAL

AD5259EVAL

更新时间： 2024-12-01 03:14:27

品牌	Logo	应用领域
亚德诺 - ADI		电位器
页数	文件大小	规格书
14页	242K
描述
Nonvolatile, I2C-Compatible 256-Position, Digital Potentiometer

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AD5259EVAL 数据手册

Nonvolatile, I²C Compatible

256-Position, Digital Potentiometer

Preliminary Technical Data

AD5259

parts on one bus, address bits AD0 and AD1 allow up to nine

devices on the same bus.

FEATURES

Nonvolatile memoy maintains wiper settings

256-position

Compact MSOP-10 (3 mm × 4.9 mm) package

I²C® compatible interface

FUNCTIONAL BLOCK DIAGRAMS

V_LOGICpin provides increased interface flexibility.

End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

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°C

Wide operating temperature –40°C to +85°C

+3V to +5V single-supply

VDD

RDAC1

VLOGIC

DGND

RDAC EEPROM

DATA

SCL

SDA

I2C

SERIAL

INTERFACE

CONTROL

AD0

AD1

COMMAND DECODE LOGIC

ADDRESS DECODE LOGIC

CONTROL LOGIC

POWER

ON RESET

APPLICATIONS

LCD panel V_COMadjustment

LCD panel brightness and contrast control

Mechanical potentiometer replacement in new designs

Programmable power supplies

RF amplifier biasing

Figure 1.

Automotive electronics adjustment

Gain control and offset adjustment

Low resolution DAC replacement

Electronics level settings

10 A

AD0

AD1

SDA

SCL

AD5259

VDD

TOP VIEW

(Not to Scale)

GND

VLOGIC

GENERAL OVERVIEW

Figure 3. Pinout.

The AD5259 provides a compact nonvolatile 3 mm × 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 I²C compatible

digital interface, which can also be used to read back the wiper

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.

Note:

The terms digital potentiometer, VR, and RDAC are used interchangeably.

Purchase of licensed I²C components of Analog Devices or one of its sublicensed

Associated Companies conveys a license for the purchaser under the Philips I²C

Patent Rights to use these components in an I²C system, provided that the system

conforms to the I²C Standard Specification as defined by Philips.

In addition, a separate V_LOGICpin 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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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与AD5259EVAL相关器件

型号	品牌	获取价格	描述	数据表
AD5259EVAL2	ADI	获取价格	Nonvolatile, I2C-Compatible 256-Position, Digital Potentiometer
AD526	ADI	获取价格	10 MHz, 20 V/μs, G = 1, 10, 100, 1000 i CMOS®
AD5260	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometers
AD5260_10	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometer
AD5260BRU20	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometers
AD5260BRU200	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometers
AD5260BRU200-REEL7	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometers
AD5260BRU20-REEL7	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometers
AD5260BRU50	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometers
AD5260BRU50-REEL7	ADI	获取价格	1-/2-Channel 15 V Digital Potentiometers

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