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AD5232BRU10-REEL7

更新时间： 2024-11-20 22:47:31
品牌 Logo 应用领域
亚德诺 - ADI 转换器电位器数字电位计存储电阻器光电二极管
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20页 266K
描述
8-Bit Dual Nonvolatile Memory Digital Potentiometer

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AD5232BRU10-REEL7 数据手册

 浏览型号AD5232BRU10-REEL7的Datasheet PDF文件第2页浏览型号AD5232BRU10-REEL7的Datasheet PDF文件第3页浏览型号AD5232BRU10-REEL7的Datasheet PDF文件第4页浏览型号AD5232BRU10-REEL7的Datasheet PDF文件第5页浏览型号AD5232BRU10-REEL7的Datasheet PDF文件第6页浏览型号AD5232BRU10-REEL7的Datasheet PDF文件第7页 
8-Bit Dual Nonvolatile Memory  
Digital Potentiometer  
a
AD5232*  
FEATURES  
FUNCTIO NAL BLO CK D IAGRAM  
Nonvolatile Memory Preset Maintains Wiper Settings  
Dual Channel, 256-Position Resolution  
Full Monotonic Operation DNL < 1 LSB  
10 kꢀ, 50 kꢀ, 100 kꢀ Terminal Resistance  
Linear or Log Taper Settings  
Push-Button Increment/Decrement Compatible  
SPI-Compatible Serial Data Input with Readback  
Function  
AD5232  
CS  
V
DD  
RDAC1  
REGISTER  
ADDR  
DECODE  
RDAC1  
CLK  
SDI  
A1  
W1  
B1  
SDI  
SERIAL  
INTERFACE  
GND  
EEMEM1  
3 V to 5 V Single Supply or ꢁ2.5 V Dual Supply  
Operation  
14 Bytes of User EEMEM Nonvolatile Memory for  
Constant Storage  
Permanent Memory Write Protection  
100-Year Typical Data Retention TA = 55ꢂC  
RDAC2  
RDAC2  
REGISTER  
SDO  
SDO  
A2  
W2  
B2  
WP  
EEMEM  
CONTROL  
RDY  
EEMEM2  
14 BYTES  
USER EEMEM  
PR  
V
SS  
APPLICATIONS  
T he basic mode of adjustment is the increment and decrement  
command controlling the present setting of the Wiper position  
setting (RDAC) register. An internal scratch pad RDAC register  
can be moved UP or DOWN one step of the nominal terminal  
resistance between terminals A and B. T his linearly changes the  
wiper to B terminal resistance (RWB) by one position segment of  
the devices’ end-to-end resistance (RAB). For exponential/loga-  
rithmic changes in wiper setting, a left/right shift command  
adjusts levels in ±6 dB steps, which can be useful for audio and  
light alarm applications.  
Mechanical Potentiometer Replacement  
Instrumentation: Gain, Offset Adjustment  
Programmable Voltage-to-Current Conversion  
Programmable Filters, Delays, Time Constants  
Line Impedance Matching  
Power Supply Adjustment  
DIP Switch Setting  
GENERAL D ESCRIP TIO N  
T he AD5232 device provides a nonvolatile, dual-channel,  
digitally controlled variable resistor (VR) with 256-position  
resolution. T hese devices perform the same electronic adjust-  
ment function as a potentiometer or variable resistor. T he  
AD5232’s versatile programming via a microcontroller allows  
multiple modes of operation and adjustment.  
T he AD5232 is available in a thin T SSOP-16 package. All parts  
are guaranteed to operate over the extended industrial tempera-  
ture range of –40°C to +85°C. An evaluation board is available,  
Part Number: AD5232EVAL.  
In the direct program mode a predetermined setting of the RDAC  
register can be loaded directly from the microcontroller.  
Another key mode of operation allows the RDAC register to be  
refreshed with the setting previously stored in the EEMEM  
register. When changes are made to the RDAC register to estab-  
lish a new wiper position, the value of the setting can be saved  
into the EEMEM by executing an EEMEM save operation.  
Once the settings are saved in the EEMEM register these values  
will be automatically transferred to the RDAC register to set the  
wiper position at system power ON. Such operation is enabled  
by the internal preset strobe and the preset can also be accessed  
externally.  
100  
75  
50  
25  
R
R
WA  
WB  
All internal register contents can be read out of the serial data  
output (SDO). T his includes the RDAC1 and RDAC2 registers,  
the corresponding nonvolatile EEMEM1 and EEMEM2 regis-  
ters, and the 14 spare USER EEMEM registers available for  
constant storage.  
0
0
64  
128  
192  
256  
CODE – Decimal  
Figure 1. Symmetrical RDAC Operation  
*P atent 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  
1234567...20

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AD5232BRU10-REEL7 替代型号

型号 品牌 替代类型 描述 数据表
AD5232BRUZ10-REEL7 ADI

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 Nonvolatile Memory,Dual 256-Position Digital Potentiometer

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