Datasheet > AD5270

AD5270

更新时间： 2024-11-04 12:27:27

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
24页	725K
描述
1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rheostat

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AD5270 数据手册

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

SPI Interface and 50-TP Memory Digital Rheostat

Data Sheet

AD5270/AD5271

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

SPI-compatible interface

Wiper setting readback

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

POWER-ON

RESET

AD5270/AD5271

RDAC

SCLK

SYNC

DIN

10/8

SERIAL

INTERFACE

50-TP

MEMORY

BLOCK

SDO

APPLICATIONS

EXT_CAP

GND

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

The AD5270/AD5271 device wiper settings are controllable

through the SPI digital interface. Unlimited adjustments are

allowed before programming the resistance value into the

50-TP memory. The AD5270/AD5271 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 resistance

position (analogous to placing epoxy on a mechanical trimmer).

GENERAL DESCRIPTION

The AD5270/AD5271¹are single-channel, 1024-/256-position

digital rheostats that combine industry leading variable resistor

performance with nonvolatile memory (NVM) in a compact

package.

The AD5270/AD5271 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 AD5270/AD5271 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. F

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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与AD5270相关器件

型号	品牌	获取价格	描述	数据表
AD5270BCPZ100-R2	ADI	获取价格	IC,DIGITAL POTENTIOMETER,LLCC,10PIN,PLASTIC
AD5270BCPZ-100-RL7	ADI	获取价格	1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rh
AD5270BCPZ20-R2	ADI	获取价格	IC,DIGITAL POTENTIOMETER,LLCC,10PIN,PLASTIC
AD5270BCPZ-20-RL7	ROCHESTER	获取价格	20K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 1024 POSITIONS, PDSO10, 3 X 3
AD5270BCPZ-20-RL7	ADI	获取价格	1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rh
AD5270BCPZ20-U1	ADI	获取价格	IC,DIGITAL POTENTIOMETER,LLCC,10PIN,PLASTIC
AD5270BRMZ-100	ADI	获取价格	1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rh
AD5270BRMZ-100-RL7	ADI	获取价格	1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rh
AD5270BRMZ100-U1	ADI	获取价格	IC,DIGITAL POTENTIOMETER,TSSOP,10PIN,PLASTIC
AD5270BRMZ-20	ADI	获取价格	1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rh

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