Datasheet > EVAL-AD5272SDZ

EVAL-AD5272SDZ

更新时间： 2024-02-26 04:36:08

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
28页	713K
描述
1024-/256-Position, 1% Resistor Tolerance Error, I2C Interface and 50-TP Memory Digital Rheostat

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EVAL-AD5272SDZ 数据手册

1024-/256-Position, 1% Resistor Tolerance Error,

I²C Interface and 50-TP Memory Digital Rheostat

Data Sheet

AD5272/AD5274

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Single-channel, 1024-/256-position resolution

20 kΩ, 50 kΩ, 100 kΩ nominal resistance

Maximum 1ꢀ nominal resistor tolerance error

50-times programmable (50-TP) wiper memory

Rheostat mode temperature coefficient: 5 ppm/°C

2.7 V to 5.5 V single-supply operation

2.5 V to 2.75 V dual-supply operation for ac or bipolar

operations

POWER-ON

RESET

AD5272/AD5274

RDAC

SCL

SDA

10/8

I C

SERIAL

INTERFACE

I²C-compatible interface

Wiper setting readback

50-TP

MEMORY

BLOCK

ADDR

RESET

Power on refreshed from 50-TP memory

Thin LFCSP 10-lead, 3 mm × 3 mm × 0.8 mm package

Compact MSOP, 10-lead 3 mm × 4.9 mm × 1.1 mm package

EXT_CAP

GND

APPLICATIONS

Figure 1.

Mechanical rheostat replacements

Op-amp: variable gain control

Instrumentation: gain, offset adjustment

Programmable voltage to current conversions

Programmable filters, delays, time constants

Programmable power supply

Sensor calibration

GENERAL DESCRIPTION

The AD5272/AD5274¹are single-channel, 1024-/256-position

digital rheostats that combine industry leading variable resistor

performance with nonvolatile memory (NVM) in a compact

package.

The AD5272/AD5274 device wiper settings are controllable

through the I²C-compatible digital interface. Unlimited

adjustments are allowed before programming the resistance

value into the 50-TP memory. The AD5272/AD5274 do not

require any external voltage supply to facilitate fuse blow and

there are 50 opportunities for permanent programming. During

50-TP activation, a permanent blow fuse command freezes the

wiper position (analogous to placing epoxy on a mechanical

trimmer).

The AD5272/AD5274 ensure less than 1% end-to-end resistor

tolerance error and offer 50-times programmable (50-TP) memory.

The guaranteed industry leading low resistor tolerance error

feature simplifies open-loop applications as well as precision

calibration and tolerance matching applications.

The AD5272/AD5274 are available in a 3 mm × 3 mm 10-lead

LFCSP package and in a 10-lead MSOP package. The parts are

guaranteed to operate over the extended industrial temperature

range of −40°C to +125°C.

¹Protected by U.S. Patent Number 7688240.

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

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 registeredtrademarks arethe 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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