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AD5231BRU10 PDF预览

AD5231BRU10

更新时间： 2024-01-31 03:04:12
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 421K
描述
Nonvolatile Memory, 1024-Position Digital Potentiometers

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AD5231BRU10 技术参数

Source Url Status Check Date：2013-05-01 14:56:10.875是否无铅： 含铅
是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：TSSOP包装说明：TSSOP, TSSOP16,.25
针数：16Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.34其他特性：LINEAR OR LOG TAPER SETTINGS; NONVOLATILE MEMORY; CAN ALSO OPERATE FROM +/-2.25V TO +/-2.75V SUPPLY
标称带宽：0.37 kHz控制接口：3-WIRE SERIAL
转换器类型：DIGITAL POTENTIOMETERJESD-30 代码：R-PDSO-G16
JESD-609代码：e0长度：5 mm
湿度敏感等级：1功能数量：1
位置数：1024端子数量：16
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：TSSOP
封装等效代码：TSSOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：240
电源：+-2.5/3/5 V认证状态：Not Qualified
电阻定律：LOGARITHMIC最大电阻容差：20%
最大电阻器端电压：3 V最小电阻器端电压：
座面最大高度：1.2 mm子类别：Digital Potentiometers
标称供电电压：3 V表面贴装：YES
标称温度系数：600 ppm/ °C温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30标称总电阻：10000 Ω
宽度：4.4 mmBase Number Matches：1

AD5231BRU10 数据手册

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Nonvolatile Memory,  
a
1024-Position Digital Potentiometers  
AD5231*  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Nonvolatile Memory1 Preset Maintains Wiper Settings  
1024-Position Resolution  
AD5231  
CS  
V
DD  
Full Monotonic Operation  
RDAC  
ADDR  
RDAC  
REGISTER  
CLK  
SDI  
10 kꢀ, 50 kꢀ, and 100 kꢀ Terminal Resistance  
Permanent Memory Write-Protection  
Wiper Settings Read Back  
DECODE  
A
SDI  
W
B
SERIAL  
INTERFACE  
EEMEM1  
GND  
Linear Increment/Decrement  
Log Taper Increment/Decrement  
SDO  
SDO  
Push Button Increment/Decrement Compatible  
SPI Compatible Serial Interface with Readback Function  
3 V to 5 V Single Supply or ꢁ2.5 V Dual Supply  
28 Bytes User Nonvolatile Memory for Constant Storage  
100 Year Typical Data Retention TA = 55ꢂC  
DIGITAL  
REGISTER  
O1  
O2  
2
WP  
DIGITAL  
OUTPUT  
BUFFER  
EEMEM  
CONTROL  
RDY  
EEMEM2  
V
28 BYTES  
USER EEMEM  
SS  
PR  
APPLICATIONS  
Mechanical Potentiometer Replacement  
Instrumentation: Gain, Offset Adjustment  
Programmable Voltage to Current Conversion  
Programmable Filters, Delays, Time Constants  
Line Impedance Matching  
100  
75  
50  
25  
0
R
R
WB  
WA  
Power Supply Adjustment  
Low Resolution DAC Replacement  
GENERAL DESCRIPTION  
The AD5231 provides nonvolatile memory digitally controlled  
potentiometers2 with 1024-position resolution. These devices  
perform the same electronic adjustment function as a mechanical  
potentiometer. The AD5231’s versatile programming via a stan-  
dard 3-wire serial interface allows 16 modes of operation and  
adjustment, including scratch pad programming, memory stor-  
ing and retrieving, increment/decrement, log taper adjustment,  
wiper setting read back, and extra user-defined EEMEM.  
0
256  
512  
768  
1023  
CODE – Decimal  
In the scratch pad programming mode, a specific setting can be  
programmed directly to the RDAC2 register, which sets the resis-  
tance at terminals W-A and W-B. The RDAC register can also  
be loaded with a value previously stored in the EEMEM1 regis-  
ter. The value in the EEMEM can be changed or protected.  
When changes are made to the RDAC register, the value of the  
new setting can be saved into the EEMEM. Thereafter, such value  
will be transferred automatically to the RDAC register during  
system power ON. It is enabled by the internal preset strobe.  
EEMEM can also be retrieved through direct programming and  
external preset pin control.  
Figure 1. RWA(D) and RWB(D) vs. Decimal Code  
Other operations include linear step increment and decrement  
commands such that the setting in the RDAC register can be  
moved UP or DOWN, one step at a time. For logarithmic changes  
in wiper setting, a left/right bit shift command adjusts the level  
in 6 dB steps.  
The AD5231 is available in thin TSSOP-16 package. All parts  
are guaranteed to operate over the extended industrial tempera-  
ture range of –40°C to +85°C.  
NOTES  
1The terms Nonvolatile Memory and EEMEM are used interchangeably.  
2The terms Digital Potentiometer and RDAC are used interchangeably.  
*Patent pending  
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, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2001  
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