Datasheet > AD5171EVAL

AD5171EVAL

更新时间： 2024-09-16 22:09:43

品牌	Logo	应用领域
亚德诺 - ADI		数字电位计
页数	文件大小	规格书
20页	1652K
描述
64-Position OTP Digital Potentiometer

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AD5171EVAL 数据手册

64-Position OTP Digital Potentiometer

AD5171

Preliminary Technical Data

a mechanical trimmer). When this permanent setting is

achieved, the value will not change regardless of supply

variations or environmental stresses under normal operating

conditions. To verify the success of permanent programming,

Analog Devices patterned the OTP validation such that the fuse

status can be discerned from two validation bits in read mode.

FEATURES

64 positions

OTP (one-time programmable)¹set-and-forget resistance

setting—low cost alternative over EEMEM

Unlimited adjustments prior to OTP activation

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

Low tempco 5 ppm/^oC in potentiometer mode

Low tempco 35 ppm/°C in rheostat mode

Compact standard SOT-23-8 package

Low power, I_DD= 8 µA max

Fast settling time, t_s= 5 µs typ in power-up

I²C compatible digital interface

Computer software replaces µc in factory programming

applications

For applications that program AD5171 in the factories, Analog

Devices offers a device programming software, which operates

across Windows® 95 to XP® platforms including Windows NT®.

This software application effectively replaces the need for

external I²C controllers or host processors and therefore

significantly reduces users’ development time.

An AD5171 evaluation kit is available, which includes the

software, connector, and cable that can be converted for the

factory programming applications.

Full read/write of wiper register

Extra I²C device address pin

Power-on preset to midscale

The AD5171 is available in a compact SOT-23-8 package. All

parts are guaranteed to operate over the automotive

temperature range of −40°C to +125°C. Besides its unique OTP

feature, the AD5171 lends itself well to other general-purpose

digital potentiometer applications due to its temperature

performance, small form factor, and low cost.

6 V one-time programming voltage

Low operating voltage, 2.7 V to 5.5 V

OTP validation check function

Automotive temperature range −40°C to +125°C

APPLICATIONS

SCL

Systems calibrations

Electronics level settings

I C INTERFACE

SDA

AND

Mechanical potentiometers and trimmers® replacements

Automotive electronics adjustments

Gain control and offset adjustments

Transducer circuits adjustments

Programmable filters up to 1.5 MHz BW

CONTROL LOGIC

AD0

WIPER

GENERAL DESCRIPTION

GND

FUSE

LINK

The AD5171 is a 64-position, one-time programmable (OTP)

digital potentiometer², which employs fuse link technology to

achieve the memory retention of resistance setting function.

OTP is a cost-effective alternative over the EEMEM approach

for users who do not need to reprogram new memory setting in

the digital potentiometer. This device performs the same

electronic adjustment function like most mechanical trimmers

and variable resistors do. The AD5171 is programmed using a

2-wire I²C compatible digital control. It allows unlimited

adjustments before permanently setting the resistance value.

During the OTP activation, a permanent fuse blown command

is sent after the final value is determined; therefore freezing the

wiper position at a given setting (analogous to placing epoxy on

AD5171

Figure 1. Functional Block Diagram

AD5171

TOP VIEW

AD0

SDA

GND

SCL

(Not to Scale)

Figure 2. Pin Configuration

¹One-time programmable (OTP) - Unlimited adjustments before permanent

setting.

²The terms digital potentiometer and RDAC are used interchangeably.

Rev. PrC

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 owners.

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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AD5172	ADI	获取价格	256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers
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AD5172BRM100	ADI	获取价格	256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers
AD5172BRM100-R2	ADI	获取价格	IC DUAL 100K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10
AD5172BRM100-RL7	ADI	获取价格	256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers
AD5172BRM10-R2	ADI	获取价格	IC DUAL 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10,
AD5172BRM10-RL7	ADI	获取价格	256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers
AD5172BRM2.5	ADI	获取价格	256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers
AD5172BRM2.5-RL7	ADI	获取价格	256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers
AD5172BRM50	ADI	获取价格	256-Position One-Time Programmable Dual-Channel I2C Digital Potentiometers

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