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AD5233BRU100-REEL7 PDF预览

AD5233BRU100-REEL7

更新时间： 2024-11-20 22:47:31
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亚德诺 - ADI 电位器存储
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14页 222K
描述
Nonvolatile Memory Digital Potentiometers

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AD5233BRU100-REEL7 数据手册

 浏览型号AD5233BRU100-REEL7的Datasheet PDF文件第2页浏览型号AD5233BRU100-REEL7的Datasheet PDF文件第3页浏览型号AD5233BRU100-REEL7的Datasheet PDF文件第4页浏览型号AD5233BRU100-REEL7的Datasheet PDF文件第5页浏览型号AD5233BRU100-REEL7的Datasheet PDF文件第6页浏览型号AD5233BRU100-REEL7的Datasheet PDF文件第7页 
PRELIMINARY TECHNICAL DATA  
Nonvolatile Memory  
a
Digital Potentiometers  
AD5231/AD5232/AD5233  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
Nonvolatile Memory Preset Maintains Wiper Settings  
AD5231 Single, 1024 Position Resolution  
AD5232 Dual, 256 Position Resolution  
AD5233 Quad, 64 Position Resolution  
10K, 50K, 100K Ohm Terminal Resistance  
Linear or Log taper Settings  
Increment/Decrement Commands, Push Button Command  
SPI Compatible Serial Data Input with Readback Function  
+3 to +5V Single Supply or 2.5V Dual Supply Operation  
User EEMEM nonvolatile memory for constant storage  
AD5231  
C S  
VD D  
AD DR  
D ECO D E  
R D AC 1  
REGISTER  
C LK  
SDI  
R D AC 1  
SDI  
A1  
W 1  
B1  
SERIAL  
EEMEM1  
INTERFACE  
SDO  
G ND  
SDO  
W P  
D IG ITAL 2  
REGISTER  
O1  
O2  
D IG ITAL  
O UTPU T  
BUFFER  
2
EEMEM  
C ON TR O L  
R D Y  
PR  
APPLICATIONS  
EEMEM2  
VSS  
28 BYTES  
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  
USER EEM EM  
AD5232  
C S  
VDD  
ADDR  
DECODE  
R DAC1  
R DAC1  
C LK  
SDI  
R EG ISTER  
A1  
W 1  
B1  
SDI  
SER IAL  
G ND  
EEM EM 1  
IN TERFAC E  
SDO  
GENERAL DESCRIPTION  
The AD5231/AD5232/AD5233 family provides a single-  
/dual-/quad-channel, digitally controlled variable resistor (VR)  
with resolutions of 1024/256/64 positions respectively. These  
devices perform the same electronic adjustment function as a  
potentiometer or variable resistor. The AD523X’s versatile  
programming via a Micro Controller allows multiple modes of  
operation and adjustment.  
R DAC2  
SDO  
W P  
R DAC2  
R EG ISTER  
A2  
W 2  
B2  
EEM EM  
C ON TR O L  
R DY  
PR  
EEM EM 2  
14 BY T ES  
VSS  
U S ER E EM E M  
AD5233  
C S  
In the direct program mode a predetermined setting of the  
RDAC register can be loaded directly from the micro controller.  
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  
establish 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 transferred automatically 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.  
VDD  
ADDR  
DECODE  
R DAC1  
R DAC1  
C LK  
SDI  
R EG ISTER  
A1  
W 1  
B1  
SDI  
SER IAL  
EEM EM 1  
IN TERFAC E  
SDO  
R DAC2  
SDO  
W P  
R DAC2  
R EG ISTER  
A2  
W 2  
B2  
EEM EM  
C ON TR O L  
R DY  
G ND  
EEM EM 2  
11 BY T ES  
U S ER E EM E M  
The 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. This linearly changes the  
wiper to B terminal resistance (RWB) by one position segment of  
the device's end-to-end resistance (RAB). For  
exponential/logarithmic changes in wiper setting, a left/right  
shift command adjusts levels in +/-6dB steps, which can be  
useful for sound and light alarm applications.  
R DAC3  
R DAC3  
R EG ISTER  
O1  
O2  
A3  
W 3  
B3  
D IGITAL  
O UTPU T  
BUFFER  
EEM EM 3  
2
R DAC4  
D IGITAL 5  
R EG ISTER  
R DAC4  
A4  
R EG ISTER  
W 4  
PR  
B4  
EEM EM 5  
EEM EM 4  
VSS  
The AD523X are available in the thin TSSOP package. All  
parts are guaranteed to operate over the extended industrial  
temperature range of -40°C to +85°C.  
REV PrF, 22 MAR '01  
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, which 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:617/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
1234567...14

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