X9428 Datasheet PDF | Intersil Corporation





(PDF) X9428 Datasheet PDF

Part Number X9428
Description Single Digitally Controlled Potentiometer
Manufacture Intersil Corporation
Total Page 21 Pages
PDF Download Download X9428 Datasheet PDF

Features: IGNS E W DES N R O F N DED EM ENT COMME RE PL AC D E N OT R E D N E enter at OM M Data Sheet port C p u S l NO R E C a m/tsc nic our Tech r www.intersil.co t c ta n o c o TERSIL 1-888-IN ® X9428 Low Noise/Low Power/2-Wire Bus April 2 6, 2006 FN8197.1 Single Digitally Cont rolled Potentiometer (XDCP™) FEATURES • Solid state potentiometer • 2-wi re serial interface • Register orient ed format —Direct Read/Write/Transfer wiper position —Store as many as fou r positions per potentiometer • Power supplies —VCC = 2.7V to 5.5V —V+ = 2.7V to 5.5V —V– = -2.7V to -5.5V • Low power CMOS —Standby current < 1µA —Ideal for battery operated app lications • High reliability —Endur ance–100,000 Data changes per bit per register —Register data retention– 100 years • 4-bytes of nonvolatile me mory • 10kΩ resistor array www.DataS heet4U.com • Resolution: 64 taps each potentiometer • 16 Ld SOIC, 14 Ld TS SOP packages • Pb-free plus anneal available (RoHS compliant) BLOCK DIAGRAM VCC VSS V+ V– SCL SDA A0 A2 A3 WP D.

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X9428 datasheet
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Single Digitally Controlled Potentiometer
(XDCP™)
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
• Power supplies
—VCC = 2.7V to 5.5V
—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
—Endurance–100,000 Data changes per bit per
register
—Register data retention–100 years
• 4-bytes of nonvolatile memory
• 10kΩ resistor array
www.DataSheet4U.com Resolution: 64 taps each potentiometer
• 16 Ld SOIC, 14 Ld TSSOP packages
• Pb-free plus anneal available (RoHS compliant)
X9428
Low Noise/Low Power/2-Wire Bus
April 26, 2006
FN8197.1
DESCRIPTION
The X9428 integrates a digitally controlled
potentiometers (XDCP) on a monolithic CMOS
integrated microcircuit.
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.
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.
BLOCK DIAGRAM
VCC
VSS
V+
V–
SCL
SDA
A0
A2
A3
WP
Interface
and
Control
Circuitry
8
Data
R0 R1
R2 R3
Wiper
Counter
Register
(WCR)
VH/RH
VL/RL
VW/RW
1 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, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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