EEWORLDEEWORLDEEWORLD

Part Number

Search

AD5255BRU25-RL7

Description
3-Channel Digital Potentiometer with Nonvolatile Memory
File Size408KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Compare View All

AD5255BRU25-RL7 Overview

3-Channel Digital Potentiometer with Nonvolatile Memory

3-Channel Digital Potentiometer with
Nonvolatile Memory
AD5255
FEATURES
3 channels:
Dual 512-position
Single 128-position
25 kΩ or 250 kΩ full-scale resistance
Low temperature coefficient:
Potentiometer divider 15 ppm/°C
Rheostat mode 35 ppm/°C
Nonvolatile memory retains wiper settings
Permanent memory write protection
Linear increment/decrement
±6 dB increment/decrement
I
2
C-compatible serial interface
2.7 V to 5.5 V single-supply operation
±2.25 V to ±2.75 V dual-supply operation
Power-on reset time
256 bytes general-purpose user EEPROM
11 bytes RDAC user EEPROM
GBIC and SFP compliant EEPROM
100-year typical data retention at T
A
= 55°C
V
DD
V
SS
GND
SCL
SDA
A0_RDAC
A1_RDAC
A0_E
A1_E
COMMAND
DECODE
LOGIC
POWER-ON
RESET
ADDRESS
DECODE
LOGIC
DECODE
LOGIC
I
2
C
SERIAL
INTERFACE
FUNCTIONAL BLOCK DIAGRAM
RDAC0
REGISTER
256 BYTES
USER
EEPROM
32 BYTES
RDAC
EEPROM
DATA
CONTROL
RDAC0
A0
W0
9 BIT
RDAC1
B0
RDAC1
REGISTER
A1
W1
9 BIT
RDAC2
B1
RDAC2
REGISTER
A2
W2
RS
7 BIT
B2
04555-0-001
WP
Figure 1.
APPLICATIONS
Mechanical potentiometer replacement
RGB LED backlight control
White LED brightness adjustment
Programmable gain and offset control
Programmable filters
GENERAL DESCRIPTION
The AD5255 provides dual 512-position and a single
128-position digitally controlled variable resistors
1
(VR) in a
TSSOP package. This device performs the same electronic
adjustment function as a potentiometer, trimmer, or variable
resistor. Each VR offers a completely programmable value of
resistance between the A terminal and the wiper or the B
terminal and the wiper. The fixed A-to-B terminal resistance of
25 kΩ or 250 kΩ has a 1% channel-to-channel matching
tolerance and a nominal temperature coefficient of 35 ppm/°C.
Wiper position programming, EEPROM
2
reading, and EEPROM
writing is conducted via the standard 2-wire I
2
C interface. Pre-
vious/default wiper position settings can be stored in memory,
and refreshed upon system power-up.
Additional features of the AD5255 include preprogrammed
linear and logarithmic increment/decrement wiper changing.
The actual resistor tolerances are stored in EEPROM so that the
actual end-to-end resistance is known, which is valuable for
calibration in precision applications.
The AD5255 is available in a 24-lead TSSOP package. All parts
are guaranteed to operate over the extended industrial tempera-
ture range of −40°C to +85°C.
1
The terms programmable resistor, variable resistor, RDAC, and digital
potentiometer are used interchangeably.
2
The terms nonvolatile memory, EEMEM, and EEPROM are used
interchangeably.
Rev. 0
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
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.

AD5255BRU25-RL7 Related Products

AD5255BRU25-RL7 AD5255 AD5255BRU25 AD5255BRU250 AD5255BRU250-RL7
Description 3-Channel Digital Potentiometer with Nonvolatile Memory 3-Channel Digital Potentiometer with Nonvolatile Memory 3-Channel Digital Potentiometer with Nonvolatile Memory 3-Channel Digital Potentiometer with Nonvolatile Memory 3-Channel Digital Potentiometer with Nonvolatile Memory
Motorcycle two-way alarm system
The LCD two-way alarm system for motorcycles is a cutting-edge product with the latest anti-theft technology. It uses a cordless intelligent cyclic code-hopping system for remote control. The code is ...
rain MCU
How does FPGA sample digital signals?
For example, a simple monochrome video signal has three signals: VSYNC, HSYNC, and Z. Since it is monochrome, Z is actually 0 and 1, not an analog quantity. In addition, the Z signal does not have a s...
albertjin FPGA/CPLD
Wavecom Q24Plus, wip version v301, failed to send large pictures via tcp
I am not using the operating system to establish a dial-up network connection. I am using the built-in TCP function. I can send MMS with small GIF images, about 200 bytes, but not large ones. The comm...
baidu123 Embedded System
Reprint: AT89S51 PROTEUS simulation example
Very good information for learning AT89S51. [[i] This post was last edited by LIUZZ on 2009-3-24 17:06 [/i]]...
LIUZZ MCU
gprs send multimedia message
I use 6410 + wave q2403a GPRS to send MMS. PPP protocol has been transplanted, and gprs can access the Internet. I have read a lot about MMS protocol on the Internet, which is very confusing. I have a...
anzai Embedded System
[MPS Award-winning Review] Let’s talk about the past of model selection
Welcome to the second phase of the MPS "Serious Technology" Exploration Camp. Let's work with the ultimate creative award-winning netizens to realize their ideas, witness the entire creation process, ...
EEWORLD社区 Power technology

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 993  395  713  662  997  20  8  15  14  21 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号