Datasheet > AD5253BRUZ50-RL7

AD5253BRUZ50-RL7

更新时间： 2024-11-30 12:27:15

品牌	Logo	应用领域
亚德诺 - ADI		电位器存储
页数	文件大小	规格书
32页	576K
描述
Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers

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AD5253BRUZ50-RL7 数据手册

Quad 64-/256-Position I²C Nonvolatile

Memory Digital Potentiometers

Data Sheet

AD5253/AD5254

FEATURES

FUNCTIONAL BLOCK DIAGRAM

AD5253: quad 64-position resolution

AD5254: quad 256-position resolution

1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

Nonvolatile memory¹stores wiper settings w/write protection

Power-on refreshed to EEMEM settings in 300 µs typ

EEMEM rewrite time = 540 µs typ

Resistance tolerance stored in nonvolatile memory

12 extra bytes in EEMEM for user-defined information

I²C-compatible serial interface

Direct read/write access of RDAC²and EEMEM registers

Predefined linear increment/decrement commands

Predefined 6 dB step change commands

Synchronous or asynchronous quad-channel update

Wiper setting readback

RDAC EEMEM

EEMEM

RDAC0

REGIS-

TER

TOL

POWER-ON

REFRESH

DGND

DATA

RDAC1

RDAC2

SCL

SDA

RDAC1

REGIS-

TER

I C

SERIAL

INTERFACE

CONTROL

AD0

AD1

COMMAND

DECODE LOGIC

RDAC2

REGIS-

TER

ADDRESS

DECODE LOGIC

CONTROL LOGIC

RDAC3

REGIS-

TER

AD5253/AD5254

4 MHz bandwidth—1 kΩ version

Single supply 2.7 V to 5.5 V

Figure 1.

Dual supply 2.25 V to 2.75 V

2 slave address-decoding bits allow operation of 4 devices

100-year typical data retention, T_A= 55°C

Operating temperature: –40°C to +105°C

The AD5253/AD5254 allow the host I²C controllers to write

any of the 64-/256-step wiper settings in the RDAC registers

and store them in the EEMEM. Once the settings are stored,

they are restored automatically to the RDAC registers at system

power-on; the settings can also be restored dynamically.

APPLICATIONS

Mechanical potentiometer replacement

Low resolution DAC replacement

RGB LED backlight control

The AD5253/AD5254 provide additional increment,

decrement, +6 dB step change, and –6 dB step change in

synchronous or asynchronous channel update mode. The

increment and decrement functions allow stepwise linear

adjustments, with a 6 dB step change equivalent to doubling

or halving the RDAC wiper setting. These functions are useful

for steep-slope, nonlinear adjustments, such as white LED

brightness and audio volume control.

White LED brightness adjustment

RF base station power amp bias control

Programmable gain and offset control

Programmable attenuators

Programmable voltage-to-current conversion

Programmable power supply

Programmable filters

Sensor calibrations

The AD5253/AD5254 have a patented resistance-tolerance

storing function that allows the user to access the EEMEM and

obtain the absolute end-to-end resistance values of the RDACs

for precision applications.

GENERAL DESCRIPTION

The AD5253/AD5254 are quad-channel, I²C®, nonvolatile

mem-ory, digitally controlled potentiometers with 64/256

positions, respectively. These devices perform the same

electronic adjust-ment functions as mechanical potentiometers,

trimmers, and variable resistors.

The AD5253/AD5254 are available in TSSOP-20 packages in

1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ options. All parts are

guaranteed to operate over the –40°C to +105°C extended

industrial temperature range.

The parts’ versatile programmability allows multiple modes of

operation, including read/write access in the RDAC and EEMEM

registers, increment/decrement of resistance, resistance changes

in 6 dB scales, wiper setting readback, and extra EEMEM for

storing user-defined information, such as memory data for other

components, look-up table, or system identification information.

¹The terms nonvolatile memory and EEMEM are used interchangeably.

²The terms digital potentiometer 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

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

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AD5253BRUZ50-RL7 替代型号

型号	品牌	替代类型	描述	数据表
AD5253BRU50-RL7	ADI	完全替代	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5253BRUZ50	ADI	类似代替	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5253BRU50	ADI	类似代替	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers

与AD5253BRUZ50-RL7相关器件

型号	品牌	获取价格	描述	数据表
AD5253EVAL	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254	ADI	获取价格	Quad 64-/256-Position IC Nonvolatile Memory Digital Potentiometers
AD5254_15	ADI	获取价格	Quad 64-/256-Position IC Nonvolatile Memory Digital Potentiometers
AD5254BRU1	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254BRU10	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254BRU100	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254BRU100-RL7	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254BRU10-RL7	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254BRU1-RL7	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
AD5254BRU50	ADI	获取价格	Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers

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