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参数资料
| 型号： | AD5259EVAL |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | 数字电位计 |
| 英文描述： | Nonvolatile, I2C-Compatible 256-Position, Digital Potentiometer |
| 中文描述： | 非易失，I2C兼容256级，数字电位器 |
| 文件页数： | 1/14页 |
| 文件大小： | 246K |
| 代理商： | AD5259EVAL |
Nonvolatile, I
2
C Compatible
256-Position, Digital Potentiometer
Preliminary Technical Data
AD5259
FEATURES
Rev. PrJ 7/22/04 | Page 1 of 14
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 companies.
Information furnished by Analog Devices is believed to be accurate and reliable.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
2004 Analog Devices, Inc. All rights reserved.
www.analog.com
Nonvolatile memoy maintains wiper settings
256-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 5 k, 10 k, 50 k, 100 k
Resistance tolerance stored in EEMEM(0.1% accuracy)
Power On EEMEM Refresh Time < 1ms
Software write protect command
Tri-state address decode pins AD0 and AD1
100-year typical data retention at 55°C
Wide operating temperature –40°C
to +85°C
+3V to +5V 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
Low resolution DAC replacement
Electronics level settings
GENERAL OVERVIEW
The AD5259 provides a compact nonvolatile 3 mm × 4.9 mm
packaged solution for 256-position adjustment applications.
These devices perform the same electronic adjustment function
as mechanical potentiometers or variable resistors, with
enhanced resolution and solid-state reliability.
The wiper settings are controllable through an I
2
C compatible
digital interface, which can also be used to read back the wiper
register and EEMEM content. Resistor tolerance is also stored
within EEMEM and can be used to provide an end-to-end
tolerance accuracy of 0.1%. In order to provide added security,
command bits are available to place the part into a write protect
mode in which data can not be written to the EEMEM register.
In addition, a separate V
LOGIC
pin provides the user with
increased interface flexibility. For users who need multiple
parts on one bus, address bits AD0 and AD1 allow up to nine
devices on the same bus.
FUNCTIONAL BLOCK DIAGRAMS
DATA
CONTROL
RDAC EEPROM
COMMAND DECODE LOGIC
ADDRESS DECODE LOGIC
CONTROL LOGIC
RDAC1
REGISTER
A1
W1
B1
RDAC1
SCL
SDA
I2C
SERIAL
INTERFACE
AD0
VDD
VLOGIC
8
POWER
ON RESET
8
DGND
AD1
Figure 1.
Figure 3. Pinout.
Note:
The terms
digital potentiometer
,
VR
, and
RDAC
are used interchangeably.
Purchase of licensed I
2
C components of Analog Devices or one of its sublicensed
Associated Companies conveys a license for the purchaser under the Philips I
2
C
Patent Rights to use these components in an I
C system, provided that the system
conforms to the I
2
C Standard Specification as defined by Philips.
1
2
3
4
5
10
9
8
7
6
W
AD0
AD1
SDA
SCL
AD5259
TOP VIEW
(Not to Scale)
A
B
VDD
G
ND
VLOGIC
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相关代理商/技术参数 |
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|---|---|
| AD5259EVAL2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Nonvolatile, I2C-Compatible 256-Position, Digital Potentiometer |
| A-D525AKG-TAXB3 | 制造商:Assmann Electronics Inc 功能描述: |
| AD526 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision, Dual-Channel Instrumentation Amplifier |
| AD5260 | 制造商:AD 制造商全称:Analog Devices 功能描述:8-Bit Dual Nonvolatile Memory Digital Potentiometer |
| AD5260_10 | 制造商:AD 制造商全称:Analog Devices 功能描述:1-/2-Channel 15 V Digital Potentiometer |
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