EVAL-AD5243SDZ Analog Devices, EVAL-AD5243SDZ Datasheet

EVAL-AD5243SDZ

Manufacturer Part Number

EVAL-AD5243SDZ

Description

Digital Potentiometer Development Tools EVALUATION BOARD

Manufacturer

Analog Devices

Series

AD5243r

Datasheet

1.EVAL-AD5243SDZ.pdf (20 pages)

Specifications of EVAL-AD5243SDZ

Rohs

yes

Product

Evaluation Boards

Tool Is For Evaluation Of

AD5243

Resistance

2.5 kOhms/10 kOhms/50 kOhms/100 kOhms

Operating Supply Voltage

5.5 V

Interface Type

I2C

Maximum Operating Temperature

+ 125 C

Factory Pack Quantity

For Use With

Sim DAC Web Tool

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Data Sheet

FEATURES

2-channel, 256-position potentiometers

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

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

Fast settling time: t

Full read/write of wiper register

Power-on preset to midscale

Extra package address decode pins: AD0 and AD1 (AD5248 only)

Computer software replaces microcontroller in factory

Single supply: 2.7 V to 5.5 V

Low temperature coefficient: 35 ppm/°C

Low power: I

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

Evaluation board available

APPLICATIONS

Systems calibrations

Electronics level settings

Mechanical trimmers replacement in new designs

Permanent factory PCB setting

Transducer adjustment of pressure, temperature, position,

RF amplifier biasing

Automotive electronics adjustment

Gain control and offset adjustment

GENERAL DESCRIPTION

The AD5243 and AD5248 provide a compact 3 mm × 4.9 mm

packaged solution for dual, 256-position adjustment applications.

The AD5243 performs the same electronic adjustment function as

a 3-terminal mechanical potentiometer, and the AD5248 performs

the same adjustment function as a 2-terminal variable resistor.

Available in four end-to-end resistance values (2.5 kΩ, 10 kΩ,

50 kΩ, and 100 kΩ), these low temperature coefficient devices

are ideal for high accuracy and stability-variable resistance

adjustments. The wiper settings are controllable through the

address decode pins, AD0 and AD1, allowing multiple parts to

share the same I

Rev. B

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.

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

C-compatible digital interface. The AD5248 has extra package

programming applications

chemical, and optical sensors

= 6 µA maximum

C, 2-wire bus on a PCB. The resistance between

= 5 µs typical on power-up

Dual, 256-Position, I

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

Tel: 781.329.4700

Fax: 781.461.3113

the wiper and either endpoint of the fixed resistor varies linearly

with respect to the digital code transferred into the RDAC latch.

Operating from a 2.7 V to 5.5 V power supply and consuming

less than 6 µA allows the AD5243/AD5248 to be used in portable

battery-operated applications.

For applications that program the AD5243/AD5258 at the factory,

Analog Devices, Inc., offers device programming software running

on Windows® NT/2000/XP operating systems. This software

effectively replaces the need for external I

in turn enhances the time to market of systems. An AD5243/

AD5248 evaluation kit and software are available. The kit includes

a cable and instruction manual.

GND

SDA

GND

FUNCTIONAL BLOCK DIAGRAMS

SCL

SDA

AD0

AD1

SCL

Digital Potentiometers

ADDRESS

DECODE

WIPER

RDAC

Figure 1. AD5243

Figure 2. AD5248

PC INTERFACE

SERIAL INPUT

AD5243/AD5248

C-Compatible

WIPER

RDAC

AD5243

AD5248

C controllers, which

www.analog.com

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