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X9438YP24 Datasheet

  • X9438YP24

  • Dual Digitally Controlled Potentiometer (XDCP) with Operatio...

  • 18頁(yè)

  • INTERSIL   INTERSIL

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ESIGNS
NEW D NT
E D F OR
ME
MMEND D REPLACE
ECO
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te r a t
N OT R
MMEND l
Sheet
ort Cen /tsc
p
Data
Sup
PRELIMINARY
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ica
com
NO RE
r Techn www.intersil.
t ou
contac TERSIL or
1-888-IN
廬
X9438
Programmable Analog
March 11, 2005
FN8199.0
Dual Digitally Controlled Potentiometer
(XDCP鈩? with Operational Amplifier
FEATURES
Two CMOS voltage operational amplifiers
Two digitally controlled potentiometers
Can be combined or used separately
Amplifiers:
鈥擫ow voltage operation
鈥擵+/V- = 鹵2.7V to 鹵5.5V
鈥擱ail-to-rail CMOS performance
鈥?MHz gain bandwidth product
鈥?Digitally controlled potentiometers
鈥擠ual 64 tap potentiometers
鈥擱
total
= 10k鈩?/div>
鈥?-wire serial interface
鈥擵
CC
= 2.7V to 5.5V
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
DESCRIPTION
The X9438 is a monolithic CMOS IC that incorporates
two operational amplifiers and two nonvolatile digitally
controlled potentiometers. The amplifiers are CMOS
differential input voltage operational amplifiers with
near rail-to-rail outputs. All pins for the two amplifiers
are brought out of the package to allow combining
them with the potentiometers, or using them as com-
plete stand-alone amplifiers.
The digitally controlled potentiometers consist of a
series string of 63 polycrystalline resistors that behave
as standard integrated circuit resistors. The two-wire
serial port, common to both pots, allows the user to
program the connection of the wiper output to any of
the resistor nodes in the series string. The wiper posi-
tion is saved in the on board E2 memory to allow for
nonvolatile restoration of the wiper position.
A wide variety of applications can be implemented
using the potentiometers and the amplifiers. A typical
application is to implement the amplifier as a wiper
buffer in circuits that use the potentiometer as a voltage
reference. The potentiometer can also be combined
with the amplifier yielding a digitally programmable gain
amplifier or programmable current source.
BLOCK DIAGRAM
V
CC
R
W0
R
H0
R
L0
V+
V
NI0
SCL
SDA
A3
A2
A1
A0
WP
Control and
Memory
WCR0
+
鈥?/div>
V
OUT0
V
INV0
V
NI1
+
WCR1
鈥?/div>
V
OUT1
V
INV1
V
SS
R
W1
R
L1
R
H1
V-
1
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.

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    Dual Digitally Controlled Potentiometer (XDCP⑩) with Operat...
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  • 英文版
    Dual Digitally Controlled Potentiometer (XDCP) with Operatio...
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  • 英文版
    Dual Digitally Controlled Potentiometer (XDCP) with Operatio...
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    Dual Digitally Controlled Potentiometer (XDCP) with Operatio...
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    Dual Digitally Controlled Potentiometer (XDCP) with Operatio...
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