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AD5206BRZ10-RL7 PDF预览

AD5206BRZ10-RL7

更新时间： 2024-11-25 21:14:15
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器
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11页 172K
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AD5206BRZ10-RL7

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AD5206BRZ10-RL7 数据手册

 浏览型号AD5206BRZ10-RL7的Datasheet PDF文件第2页浏览型号AD5206BRZ10-RL7的Datasheet PDF文件第3页浏览型号AD5206BRZ10-RL7的Datasheet PDF文件第4页浏览型号AD5206BRZ10-RL7的Datasheet PDF文件第5页浏览型号AD5206BRZ10-RL7的Datasheet PDF文件第6页浏览型号AD5206BRZ10-RL7的Datasheet PDF文件第7页 
4-/6-Channel  
a
Digital Potentiometers  
AD5204/AD5206  
FEATURES  
FUNCTIONAL BLOCK DIAGRAMS  
256 Position  
Multiple Independently Programmable Channels  
AD5204—4-Channel  
AD5206—6-Channel  
Potentiometer Replacement  
10 k⍀, 50 k⍀, 100 k⍀  
3-Wire SPI-Compatible Serial Data Input  
+2.7 V to +5.5 V Single Supply; ؎2.7 V Dual Supply  
Operation  
AD5204  
V
DD  
CS  
A1  
W1  
B1  
CLK  
D7  
D0  
EN  
RDAC  
LATCH  
#1  
ADDR  
DEC  
A2  
A1  
A0  
DO  
SDO  
R
D7  
Power ON Midscale Preset  
SER  
REG  
A4  
W4  
B4  
APPLICATIONS  
D7  
D0  
Mechanical Potentiometer Replacement  
Instrumentation: Gain, Offset Adjustment  
Programmable Voltage-to-Current Conversion  
Programmable Filters, Delays, Time Constants  
Line Impedance Matching  
RDAC  
LATCH  
#4  
DI  
D0  
SDI  
SHDN  
8
R
V
POWER-  
ON  
PRESET  
SS  
PR  
GND  
GENERAL DESCRIPTION  
AD5206  
V
CS  
DD  
The AD5204/AD5206 provides four-/six-channel, 256 position  
digitally-controlled Variable Resistor (VR) devices. These de-  
vices perform the same electronic adjustment function as a  
potentiometer or variable resistor. Each channel of the AD5204/  
AD5206 contains a fixed resistor with a wiper contact that taps  
the fixed resistor value at a point determined by a digital code  
loaded into the SPI-compatible serial-input register. The resis-  
tance between the wiper and either endpoint of the fixed resistor  
varies linearly with respect to the digital code transferred into  
the VR latch. The variable resistor offers a completely program-  
mable value of resistance between the A terminal and the wiper  
or the B Terminal and the wiper. The fixed A-to-B terminal  
resistance of 10 kΩ, 50 kΩ, or 100 kΩ has a nominal tempera-  
ture coefficient of 700 ppm/°C.  
A1  
W1  
B1  
CLK  
D7  
EN  
RDAC  
LATCH  
#1  
ADDR  
DEC  
A2  
A1  
A0  
R
D0  
D7  
SER  
REG  
A6  
W6  
B6  
D7  
D0  
RDAC  
LATCH  
#6  
DI  
D0  
SDI  
8
R
POWER-  
ON  
PRESET  
GND  
V
SS  
Each VR has its own VR latch which holds its programmed  
resistance value. These VR latches are updated from an internal  
serial-to-parallel shift register that is loaded from a standard  
3-wire serial-input digital interface. Eleven data bits make up  
the data word clocked into the serial input register. The first  
three bits are decoded to determine which VR latch will be  
loaded with the last eight bits of the data word when the CS  
strobe is returned to logic high. A serial data output pin at  
the opposite end of the serial register (AD5204 only) allows  
simple daisy-chaining in multiple VR applications without  
additional external decoding logic.  
An optional reset (PR) pin forces all the AD5204 wipers to the  
midscale position by loading 80H into the VR latch.  
The AD5204/AD5206 is available in both surface mount  
(SOL-24), TSSOP-24 and the 24-lead plastic DIP package. All  
parts are guaranteed to operate over the extended industrial  
temperature range of –40°C to +85°C. For additional single,  
dual, and quad channel devices, see the AD8400/AD8402/  
AD8403 products.  
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  
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: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
1234567...11

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