Datasheet > AD5170BRM100

AD5170BRM100

更新时间： 2024-09-16 22:34:47

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
24页	1077K
描述
256-Position Two-Time Programmable I2C Digital Potentiometer

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AD5170BRM100 数据手册

256-Position Two-Time Programmable

I²C Digital Potentiometer

AD5170

FUNCTIONAL BLOCK DIAGRAM

FEATURES

256-position

TTP (two-time programmable) set-and-forget resistance

setting allows second-chance permanent programming

Unlimited adjustments prior to OTP (one-time

programming) activation

FUSE

LINKS

OTP overwrite allows dynamic adjustments with user

defined preset

End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

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

Fast settling time: t_S= 5 µs typ in power-up

Full read/write of wiper register

RDAC

GND

AD0

AD1

ADDRESS

DECODE

Power-on preset to midscale

Extra package address decode pins AD0 and AD1

Single-supply 2.7 V to 5.5 V

SDA

SCL

SERIAL INPUT

Low temperature coefficient: 35 ppm/°C

Low power, I_DD= 6 µA maximum

Figure 1.

Wide operating temperature: –40°C to +125°C

Evaluation board and software are available

Software replaces µC in factory programming applications

APPLICATIONS

Systems calibration

The AD5170 is programmed using a 2-wire, I²C® compatible

digital interface. Unlimited adjustments are allowed before

permanently (there are actually two opportunities) setting the

resistance value. During OTP activation, a permanent blow fuse

command freezes the wiper position (analogous to placing

epoxy on a mechanical trimmer).

Electronics level setting

Mechanical Trimmers® replacement in new designs

Permanent factory PCB setting

Transducer adjustment of pressure, temperature, position,

chemical, and optical sensors

RF amplifier biasing

Automotive electronics adjustment

Gain control and offset adjustment

Unlike traditional OTP digital potentiometers, the AD5170 has

a unique temporary OTP overwrite feature that allows for new

adjustments even after the fuse has been blown. However, the

OTP setting is restored during subsequent power-up

conditions. This feature allows users to treat these digital

potentiometers as volatile potentiometers with a programmable

preset.

GENERAL OVERVIEW

The AD5170 is a 256-position, two-time programmable (TTP)

digital potentiometer¹that employs fuse link technology to

enable two opportunities at permanently programming the

resistance setting. OTP is a cost-effective alternative to EEMEM

for users who do not need to program the digital potentiometer

setting in memory more than once. This device performs the

same electronic adjustment function as mechanical

potentiometers or variable resistors with enhanced resolution,

solid-state reliability, and superior low temperature coefficient

performance.

For applications that program the AD5170 at the factory,

Analog Devices offers device programming software running

on Windows NT®, 2000, and XP® operating systems. This

software effectively replaces any external I²C controllers, thus

enhancing the time-to-market of the user’s systems.

¹The terms digital potentiometer, VR, and RDAC are used interchangeably.

Rev. A

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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AD5170BRM100 替代型号

型号	品牌	替代类型	描述	数据表
AD5170BRMZ100	ADI	类似代替	256-Position, Two-Time Programmable, I<sup>2</sup>C Compatible Digital Potenti

与AD5170BRM100相关器件

型号	品牌	获取价格	描述	数据表
AD5170BRM100-RL7	ADI	获取价格	256-Position Two-Time Programmable I2C Digital Potentiometer
AD5170BRM10-R2	ADI	获取价格	IC 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10, 3 X
AD5170BRM10-RL7	ADI	获取价格	256-Position Two-Time Programmable I2C Digital Potentiometer
AD5170BRM2.5	ADI	获取价格	256-Position Two-Time Programmable I2C Digital Potentiometer
AD5170BRM2.5-R2	ADI	获取价格	IC 2.5K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10, 3 X
AD5170BRM2.5-RL7	ADI	获取价格	256-Position Two-Time Programmable I2C Digital Potentiometer
AD5170BRM50	ADI	获取价格	256-Position Two-Time Programmable I2C Digital Potentiometer
AD5170BRM50-R2	ADI	获取价格	IC 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDSO10, 3 X
AD5170BRM50-RL7	ADI	获取价格	256-Position Two-Time Programmable I2C Digital Potentiometer
AD5170BRMZ100	ADI	获取价格	256-Position, Two-Time Programmable, I<sup>2</sup>C Compatible Digital Potenti

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