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X9428WS16I PDF预览

X9428WS16I

更新时间: 2024-09-24 03:12:47
品牌 Logo 应用领域
英特矽尔 - INTERSIL 电位器
页数 文件大小 规格书
21页 315K
描述
Single Digitally Controlled Potentiometer

X9428WS16I 数据手册

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X9428  
Low Noise/Low Power/2-Wire Bus  
®
April 26, 2006  
FN8197.1  
DESCRIPTION  
The X9428 integrates  
Single Digitally Controlled Potentiometer  
(XDCP™)  
a
digitally controlled  
potentiometers (XDCP) on a monolithic CMOS  
integrated microcircuit.  
FEATURES  
• Solid state potentiometer  
• 2-wire serial interface  
• Register oriented format  
—Direct Read/Write/Transfer wiper position  
—Store as many as four positions per  
potentiometer  
The digitally controlled potentiometer is implemented  
using 63 resistive elements in a series array. Between  
each element are tap points connected to the wiper  
terminal through switches. The position of the wiper on  
the array is controlled by the user through the 2-wire  
bus interface. Each potentiometer has associated with  
it a volatile Wiper Counter Register (WCR) and 4  
nonvolatile Data Registers (DR0:DR3) that can be  
directly written to and read by the user. The contents  
of the WCR controls the position of the wiper on the  
resistor array through the switches. Power-up recalls  
the contents of DR0 to the WCR.  
• Power supplies  
—V  
= 2.7V to 5.5V  
CC  
—V+ = 2.7V to 5.5V  
—V– = -2.7V to -5.5V  
• Low power CMOS  
—Standby current < 1µA  
—Ideal for battery operated applications  
• High reliability  
The XDCP can be used as  
a three-terminal  
Endurance–100,000 Data changes per bit per  
register  
—Register data retention–100 years  
• 4-bytes of nonvolatile memory  
• 10kΩ resistor array  
potentiometer or as a two-terminal variable resistor in  
a wide variety of applications including control,  
parameter adjustments, and signal processing.  
• Resolution: 64 taps each potentiometer  
• 16 Ld SOIC, 14 Ld TSSOP packages  
• Pb-free plus anneal available (RoHS compliant)  
BLOCK DIAGRAM  
V
V
CC  
SS  
V+  
V–  
R0 R1  
R2 R3  
V /R  
H
H
SCL  
Wiper  
Counter  
Register  
(WCR)  
Interface  
and  
Control  
SDA  
A0  
V /R  
8
L
L
A2  
A3  
Circuitry  
V
/R  
W
Data  
W
WP  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved  
All other trademarks mentioned are the property of their respective owners.  

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