參數(shù)資料
型號(hào)： X9408YB24I-2.7
廠商： INTERSIL CORP
元件分類： 數(shù)字電位計(jì)
英文描述： QUAD 2.5K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, BGA24
封裝： BUMP, CSP-24
文件頁(yè)數(shù)： 1/22頁(yè)
文件大小： 395K
代理商： X9408YB24I-2.7
1
X9408
Low Noise/Low Power/2-Wire Bus
Quad Digitally Controlled (XDCP)
Potentiometers
FEATURES
Four potentiometers in one package
64 resistor taps per potentiometer
2-wire serial interface
Wiper resistance, 40
typical at 5V
Four nonvolatile data registers for each pot
Nonvolatile storage of wiper position
Standby current < 1A max (total package)
VCC = 2.7V to 5.5V operation
V+ = 2.7V to 5.5V
V- = –2.7V to -5.5V
10k
, 2.5k end to end resistances
High reliability
—Endurance–100,000 data changes per bit per
register
—Register data retention–100 years
24-lead SOIC, 24-lead TSSOP, and 24-lead CSP
(Chip Scale Package) packages
DESCRIPTION
The
X9408
integrates
four
digitally
controlled
potentiometers
(XDCP)
on
a
monolithic
CMOS
integrated circuit.
The digital 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 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. Powerup 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.
BLOCK DIAGRAM
Interface
and
Control
Circuitry
SCL
SDA
A0
A1
A2
A3
R0 R1
R2 R3
Wiper
Counter
Register
(WCR)
Resistor
Array
Pot 1
VH1/RH1
VL1/RL1
R0 R1
R2 R3
Wiper
Counter
Register
(WCR)
VH0/RH0
VL0/RL0
Data
8
VW0/RW0
VW1/RW1
R0 R1
R2 R3
Resistor
Array
VH2/RH2
VL2/RL2
VW2/RW2
R0 R1
R2 R3
Resistor
Array
VH3/RH3
VL3/RL3
VW3/RW3
Wiper
Counter
Register
(WCR)
Wiper
Counter
Register
(WCR)
Pot 3
Pot 2
WP
Pot 0
VCC
VSS
V+
V-
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Data Sheet
FN8191.0
March 3, 2005
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