參數(shù)資料
型號(hào)： X9279UV14ZT1
廠商： Intersil
文件頁(yè)數(shù)： 1/18頁(yè)
文件大?。?/td> 0K
描述： IC XDCP SGL 256TAP 50K 14-TSSOP
標(biāo)準(zhǔn)包裝： 2,500
系列： XDCP™
接片： 256
電阻（歐姆）： 50k
電路數(shù)： 1
溫度系數(shù)： 標(biāo)準(zhǔn)值 ±300 ppm/°C
存儲(chǔ)器類型： 非易失
接口： I²C（設(shè)備位址）
電源電壓： 4.5 V ~ 5.5 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 14-TSSOP
包裝： 帶卷 (TR)
1
FN8175.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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, 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X9279
Single Supply/Low Power/256-Tap/2-Wire Bus
Single Digitally-Controlled (XDCP)
Potentiometer
The X9279 integrates a single digitally controlled
potentiometer (XDCP) on a monolithic CMOS integrated
circuit.
The digital controlled potentiometer is implemented using
255 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. The
potentiometer has associated with it a volatile Wiper Counter
Register (WCR) and a four non-volatile Data Registers 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 though the switches. Power-up recalls the contents of
the default data register (DR0) to the WCR.
The XDCP can be used as a three-terminal potentiometer or
as a two terminal variable resistor in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Features
256 Resistor Taps
2-Wire Serial Interface for Write, Read, and Transfer
Operations of the Potentiometer
Wiper Resistance, 100
Ω Typical @ 5V
16 Non-volatile Data Registers for Each Potentiometer
Non-volatile Storage of Multiple Wiper Positions
Power-on Recall. Loads Saved Wiper Position on
Power-up.
Standby Current < 5A Max
VCC: 2.7V to 5.5V Operation
50k
Ω, 100kΩ Versions of End-to-End Resistance
Endurance: 100,000 Data Changes per Bit per Register
100 yr. Data Retention
14 Ld TSSOP
Low Power CMOS
Pb-Free Available (RoHS Compliant)
Functional Diagram
256-TAPS
50k
Ω and 100kΩ
RH
RL
RW
POT
VCC
VSS
2-WIRE
BUS
WIPER
INTERFACE
POWER-ON RECALL
WIPER COUNTER
REGISTER (WCR)
DATA REGISTERS
16 BYTES
BUS
INTERFACE
AND
ADDRESS
DATA
STATUS
WRITE
READ
TRANSFER
INC/DEC
CONTROL
Data Sheet
September 23, 2009
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