X9401 Datasheet PDF | Intersil Corporation





(PDF) X9401 Datasheet PDF

Part Number X9401
Description Digitally Controlled Potentiometer
Manufacture Intersil Corporation
Total Page 19 Pages
PDF Download Download X9401 Datasheet PDF

Features: ® X9401 Low Noise/Low Power/SPI Bus Da ta Sheet October 12, 2006 FN8190.3 Qua d, 64 Tap, Digitally Controlled Potenti ometer (XDCP™) FEATURES • • • • • • • • • • • • Quad–4 separate pots, 64 taps/pot Non volatile storage of wiper position Four Nonvolatile Data Registers for Each Po t 16-bytes of EEPROM memory SPI serial interface RTotal = 10kΩ Wiper resistan ce = 150Ω typical Standby current < 1 A (total package) Operating current < 400µA max. VCC = 2.7V to 5V Package– 24 Ld SOIC 100 year data retention Pb-f ree plus anneal available (RoHS complia nt) DESCRIPTION The X9401 integrates 4 digitally controlled potentiometers (X DCP) on a monolithic CMOS integrated mi crocircuit. The digitally controlled po tentiometer is implemented using 64 res istive elements in a series array. Betw een each element are tap points connect ed to the wiper terminal through switch es. The position of the wiper on the ar ray is controlled by the user through the SPI bus interface. Each potentiometer has associated with .

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X9401 datasheet
®
Data Sheet
X9401
Low Noise/Low Power/SPI Bus
October 12, 2006
FN8190.3
Quad, 64 Tap, Digitally Controlled
Potentiometer (XDCP™)
FEATURES
• Quad–4 separate pots, 64 taps/pot
• Nonvolatile storage of wiper position
• Four Nonvolatile Data Registers for Each Pot
• 16-bytes of EEPROM memory
• SPI serial interface
• RTotal = 10kΩ
• Wiper resistance = 150Ω typical
• Standby current < 1µA (total package)
• Operating current < 400µA max.
• VCC = 2.7V to 5V
• Package–24 Ld SOIC
• 100 year data retention
• Pb-free plus anneal available (RoHS compliant)
DESCRIPTION
The X9401 integrates 4 digitally controlled potentiome-
ters (XDCP) on a monolithic CMOS integrated
microcircuit.
The digitally controlled potentiometer is implemented
using 64 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 SPI bus
interface. Each potentiometer has associated with it a
volatile Wiper Counter Register (WCR) and 4 nonvola-
tile Data Registers (DR0:DR3) that can be directly writ-
ten 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 potentiom-
eter or as a two-terminal variable resistor in a wide
variety of applications including control, parameter
adjustments, and signal processing.
BLOCK DIAGRAM
www.DataSheet4U.com
VCC
VSS
HOLD
CS
SCK
SO
SI
A0
A1
WP
Interface
and
Control
Circuitry
8
Data
R0 R1
R2 R3
Pot 0
Wiper
Counter
Register
(WCR)
VH0/RH0
VL0/RL0
VW0/RW0
R0 R1
R2 R3
Wiper
Counter
Register
(WCR)
Resistor
Array
Pot 2
VH2/RH2
VL2/RL2
VW2/RW2
R0 R1
R2 R3
Wiper
Counter
Register
(WCR)
VW1/RW1
Resistor
Array
Pot 1
VH1/RH1
VL1/RL1
R0 R1
R2 R3
Wiper
Counter
Register
(WCR)
VW3/RW3
Resistor
Array
Pot 3
VH3/RH3
VL3/RL3
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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