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参数资料
型号： AD5258BRMZ100-R71
厂商： Analog Devices, Inc.
元件分类： 数字电位计
英文描述： Nonvolatile, I2C-Compatible 64-Position, Digital Potentiometer
中文描述： 非易失，I2C兼容的64工位，数字电位器
文件页数： 1/24页
文件大小： 1299K
代理商： AD5258BRMZ100-R71
Nonvolatile, I
2
C-Compatible
64-Position, Digital Potentiometer
AD5258
FEATURES
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
Fax: 781.326.8703
2005 Analog Devices, Inc. All rights reserved.
www.analog.com
Nonvolatile memory maintains wiper settings
64-position
Compact MSOP-10 (3 mm × 4.9 mm) package
I
2
C-compatible interface
V
LOGIC
pin provides increased interface flexibility
End-to-end resistance 1 k
, 10 k, 50 k, 100 k
Resistance tolerance stored in EEPROM (0.1% accuracy)
Power-on EEPROM refresh time <1 ms
Software write protect command
Three-state Address Decode Pins AD0 and AD1 allow
9 packages per bus
100-year typical data retention at 55°C
Wide operating temperature
40°C
to +85°C
3 V to 5 V single supply
APPLICATIONS
LCD panel V
COM
adjustment
LCD panel brightness and contrast control
Mechanical potentiometer replacement in new designs
Programmable power supplies
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
Fiber to the home systems
Electronics level settings
GENERAL DESCRIPTION
The AD5258 provides a compact, nonvolatile 3 mm × 4.9 mm
packaged solution for 64-position adjustment applications.
1
or variable resistors, but with
The wiper settings are controllable through an I
2
C-compatible
digital interface that is also used to read back the wiper register
and EEPROM content. Resistor tolerance is also stored within
EEPROM providing an end-to-end tolerance accuracy of 0.1%.
There is also a software write protection function that ensures
data cannot be written to the EEPROM register.
A separate V
LOGIC
pin delivers increased interface flexibility. For
users who need multiple parts on one bus, Address Bit AD0 and
Address Bit AD1 allow up to nine devices on the same bus.
FUNCTIONAL BLOCK DIAGRAMS
0
RRDAC
RDAC
DATA
CONTROL
DCOMMAND
DEADDRESS
CONTROL LOGIC
AD5258
2
C
INSI
POWER-
A
W
B
SCL
SDA
AD0
AD1
V
DD
V
LOGIC
GND
ERDAC
6
6
Figure 1. Block Diagram
0
DCOMMAND
DEADDRESS
CLOGIC
SCL
SDA
AD0
AD1
GND
EEPROM
2
C
INSI
RAND
LEVEL
A
W
B
V
LOGIC
V
DD
Figure 2. Block Diagram Showing Level Shifters
CONNECTION DIAGRAM
0
AD5258
TOP VIEW
(Not to Scale)
W
1
AD0
2
AD1
3
SDA
4
SCL
5
A
B
V
DD
GND
V
LOGIC
10
9
8
7
6
Figure 3. Pinout
1
The terms digital potentiometer, VR (variable resistor), and RDAC are used
interchangeably.
相关PDF资料
PDF描述
AD5258BRMZ1001 Nonvolatile, I2C-Compatible 64-Position, Digital Potentiometer
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相关代理商/技术参数
参数描述
AD5258BRMZ101 制造商:AD 制造商全称:Analog Devices 功能描述:Nonvolatile, I2C-Compatible 64-Position, Digital Potentiometer
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