Datasheet > EVAL-AD5258DBZ

EVAL-AD5258DBZ

更新时间： 2024-01-07 22:01:44

品牌	Logo	应用领域
亚德诺 - ADI		电位器
页数	文件大小	规格书
24页	534K
描述
Nonvolatile, I2C-Compatible 64-Position, Digital Potentiometer

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EVAL-AD5258DBZ 数据手册

Nonvolatile, I²C^®-Compatible

64-Position, Digital Potentiometer

Data Sheet

AD5258

FEATURES

FUNCTIONAL BLOCK DIAGRAMS

Nonvolatile memory maintains wiper settings

64-position digital potentiometer

Compact MSOP-10 (3 mm × 4.9 mm)

I²C-compatible interface

RDAC

LOGIC

GND

EEPROM

DATA

CONTROL

_LOGICpin provides increased interface flexibility

SCL

SDA

I C

End-to-end resistance 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

Resistance tolerance stored in EEPROM (0.1% accuracy)

Power-on EEPROM refresh time <1 ms

Software write protect command

Address Decode Pin AD0 and Address Decode Pin AD1 allow

four packages per bus

SERIAL

INTERFACE

AD0

AD1

COMMAND

DECODE LOGIC

AD5258

ADDRESS

DECODE LOGIC

POWER-

ON RESET

CONTROL LOGIC

100-year typical data retention at 55°C

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

3 V to 5 V single supply

Figure 1. Block Diagram

LOGIC

APPLICATIONS

EEPROM

SCL

SDA

AD0

AD1

LCD panel V_COMadjustment

RDAC

AND

SERIAL

INTERFACE

LCD panel brightness and contrast control

Mechanical potentiometer replacement in new designs

Programmable power supplies

RF amplifier biasing

LEVEL

SHIFTER

COMMAND

DECODE LOGIC

ADDRESS

DECODE LOGIC

Automotive electronics adjustment

Gain control and offset adjustment

Fiber to the home systems

CONTROL

LOGIC

GND

Figure 2. Block Diagram Showing Level Shifters

Electronics level settings

GENERAL DESCRIPTION

The AD5258 provides a compact, nonvolatile 3 mm × 4.9 mm

packaged solution for 64-position adjustment applications. These

devices perform the same electronic adjustment function as

mechanical potentiometers¹or variable resistors, but with

enhanced resolution and solid-state reliability.

The wiper settings are controllable through an I²C-compatible

digital interface that is also used to read back the wiper register

and EEPROM content in addition, resistor tolerance is stored

within EEPROM, providing an end-to-end tolerance accuracy

of 0.1%. There is also a software write protection function that

ensures data cannot be written to the EEPROM register.

A separate V_LOGICpin delivers increased interface flexibility. For

users who need multiple parts on one bus, Address Bit AD0 and

Address Bit AD1 allow up to four devices on the same bus.

¹The terms digital potentiometer, VR (variable resistor), and RDAC are used

interchangeably.

Rev. D

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

rightsof third parties that may result fromits 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 andregisteredtrademarks are the property of their respective owners.

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

Technical Support

www.analog.com

12 3 4 5 6 7...24

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与EVAL-AD5258DBZ相关器件

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EVAL-AD5270SDZ	ADI	获取价格	1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rh
EVAL-AD5272SDZ	ADI	获取价格	1024-/256-Position, 1% Resistor Tolerance Error, I2C Interface and 50-TP Memory Digital Rh
EVAL-AD5290EBZ	ADI	获取价格	Compact 30 V / 15,-15 V 256-Position Digital Potentiometer
EVAL-AD5292EBZ	ADI	获取价格	256-/1024-Position, Digital Potentiometers
EVAL-AD5360EBZ	ADI	获取价格	BOARD EVAL FOR AD5360
EVAL-AD5360EBZ1	ADI	获取价格	16-Channel, 16-/14-Bit, Serial Input, Voltage-Output DAC
EVAL-AD5361EBZ	ADI	获取价格	BOARD EVAL FOR AD5361
EVAL-AD5361EBZ1	ADI	获取价格	16-Channel, 16-/14-Bit, Serial Input, Voltage-Output DAC

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