Datasheet > AD5235

AD5235

更新时间： 2024-11-20 22:47:31

品牌	Logo	应用领域
亚德诺 - ADI		电位器
页数	文件大小	规格书
10页	104K
描述
Nonvolatile Memory, Dual 1024 Position Digital Potentiometers

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AD5235 数据手册

PRELIMINARY TECHNICAL DATA

Nonvolatile Memory, Dual 1024

Position Digital Potentiometers

AD5235

FUNCTIONAL BLOCK DIAGRAMS

FEATURES

Dual, 1024 Position Resolution

25K, 250K Ohm Terminal Resistance with 50ppm/°C Tempco

Nonvolatile Memory Preset

SPI Compatible Serial Data Input with Readback Function

Increment/Decrement Commands, Push Button Command

+3 to +5V Single Supply Operation

RDAC1

ADDRESS

DECODE

RDAC1

CLK

S E R IA L

IN P U T

R E G IS TE R

SDI

EEMEM1

SDO

±2.5V Dual Supply Operation

30 bytes of general purpose nonvolatile memory

RDAC2

APPLICATIONS

PWR ON

PRESET

Mechanical Potentiometer Replacement

Instrumentation: Gain, Offset Adjustment

Programmable Voltage to Current Conversion

Programmable Filters, Delays, Time Constants

Line Impedance Matching

EEMEM

CONTROL

EEMEM2

RDY

GND

Power Supply Adjustment

DIP Switch Setting

SPARE

EEMEM

GND

GENERAL DESCRIPTION

The AD5235 provides a dual channel, digitally controlled variable

resistor (VR) with resolutions of 1024 positions. These devices

perform the same electronic adjustment function as a potentiometer or

variable resistor. The AD5235’s versatile programming via a Micro

Controller allows multiple modes of operation and adjustment.

In the direct program mode a predetermined setting of the RDAC

mode of operation allows the RDAC register to be refreshed with the

setting previously stored in the EEMEM register. When changes are

made to the RDAC register to establish a new wiper position, the

value of the setting can be saved into the EEMEM by executing an

EEMEM save operation. Once the settings are saved in the EEMEM

is enabled by the internal preset strobe and the preset can also be

accessed externally.

An internal scratch pad RDAC register can be programmed by the

micro controller to set the resistance between terminals W-and-B.

Once the target value is achieved, the RDAC content register can be

placed in the non-volatile memory for automatic recall during Power

Up.

The AD5235 is available in the thin TSSOP-16 package. All parts are

guaranteed to operate over the extended industrial temperature range

of -40°C to +85°C.

REV PrD 6 Nov 2000

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 which may result from its use. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700 Fax:781/326-8703

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与AD5235相关器件

型号	品牌	获取价格	描述	数据表
AD5235BRU25	ADI	获取价格	Nonvolatile Memory, Dual 1024 Position Digital Potentiometers
AD5235BRU25	ROCHESTER	获取价格	DUAL 25K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO16, M
AD5235BRU250	ADI	获取价格	Nonvolatile Memory, Dual 1024 Position Digital Potentiometers
AD5235BRU250-RL7	ROCHESTER	获取价格	DUAL 250K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO16,
AD5235BRU250-RL7	ADI	获取价格	IC DUAL 250K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO1
AD5235BRU25-EP-RL7	ADI	获取价格	Nonvolatile Memory, Dual 1024-Position Digital Potentiometer
AD5235BRU25-RL7	ROCHESTER	获取价格	DUAL 25K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO16, M
AD5235BRUZ25	ADI	获取价格	Nonvolatile Memory, Dual 1024-Position Digital Potentiometer
AD5235BRUZ25	ROCHESTER	获取价格	DUAL 25K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO16, R
AD5235BRUZ250	ADI	获取价格	Nonvolatile Memory, Dual 1024-Position Digital Potentiometer

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