X9455 Potentiometer Datasheet

X9455 Datasheet, PDF, Equivalent


Part Number

X9455

Description

Dual Two-wiper Digitally-Controlled Potentiometer

Manufacture

Intersil Corporation

Total Page 19 Pages
Datasheet
Download X9455 Datasheet


X9455
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Dual Two-wiper Digitally-Controlled
(XDCP™) Potentiometer
The X9455 integrates 2 digitally controlled potentiometers
(XDCP), each one with dual wipers, on a monolithic CMOS
integrated circuit.
The digitally controlled potentiometer is implemented using
255 resistive elements in a series array. Between each
element are tap points connected to wiper terminals through
switches. The position of each wiper on the array is
controlled by the user through the U/D or 2-wire bus
interface. Each potentiometer wiper has associated with it
two volatile Wiper Counter Register (WCR) and each WCR
has associated with it 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. The contents of the default data
registers (DR0A0, DR0B0, DR1A0, DR1B0) are loaded into
the WCR on power up.
The DCP can be used as a four-terminal potentiometer in a
wide variety of applications including the programming of
bias voltages, window comparators, and three resistor
programmable networks.
www.DataSheet4U.com
Pinout
X9455
(24 LD TSSOP)
TOP VIEW
DS0
A0
RW0B
NC
NC
U/D
Vcc
RL0
RH0
RW0A
A2
WP
1
2
3
4
5
6 X9455
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
DS1
SCL
RL1
RH1
RW1A
CS
Vss
RW1B
NC
NC
A1
SDA
July 28, 2006
X9455
FN8202.1
Features
• Dual two-wiper solid state potentiometer
• 256 resistor tap points-0.4% resolution
• 2-wire serial interface for write, read, and transfer
operations of the potentiometer
• Up/Down interface for individual potentiometer wipers
• Wiper resistance, 40Ω typical
• Non-volatile storage of wiper positions
• Power on recall loads saved wiper position on power-up.
• Standby current < 20µA Max
• Maximum wiper current: 3mA
• VCC: 2.7V to 5.5V operation
• 2.8kΩ,10kΩ, 50kΩ, 100kΩ version of total pot resistance
• Endurance: 100,000 data changes per bit per register
• 100 yr. data retention
• 24 Ld TSSOP
• Pb-free plus anneal available (RoHS compliant)
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. 2004, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

X9455
X9455
Ordering Information
PART NUMBER
PART
VCC LIMITS
MARKING
(V)
X9455TV24I-2.7
X9455TV G 2.7 to 5.5
X9455TV24IZ-2.7 (Note) X9455TV ZG
X9455UV24I-2.7
X9455UV G
X9455UV24IZ-2.7 (Note) X9455UV ZG
X9455WV24I-2.7
X9455WV G
RTOTAL (kΩ) TEMP RANGE (°C)
PACKAGE
100
-40 to 85
24 Ld TSSOP (4.4mm)
PKG. DWG. #
MDP0044
-40 to 85
24 Ld TSSOP (4.4mm) (Pb-free) MDP0044
50
-40 to 85
24 Ld TSSOP (4.4mm)
MDP0044
-40 to 85
24 Ld TSSOP (4.4mm) (Pb-free) MDP0044
10
-40 to 85
24 Ld TSSOP (4.4mm)
MDP0044
X9455WV24IZ-2.7 (Note) X9455WV ZG
-40 to 85
24 Ld TSSOP (4.4mm) (Pb-free) MDP0044
X9455YV24I-2.7
X9455YV G
2.8
-40 to 85
24 Ld TSSOP (4.4mm)
MDP0044
X9455YV24IZ-2.7 (Note) X9455YV ZG
-40 to 85
24 Ld TSSOP (4.4mm) (Pb-free) MDP0044
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Functional Diagram
A2
A1
A0
SDA
SCL
DS0
DS1
CS
U/D
VCC
2-wire
Interface
Up/Down
Interface
POWERUP,
INTERFACE
CONTROL AND
STATUS
VSS
RH0
RH1
WCR0A WCR0B
DR0A0 DR0B0
DR0A1 DR0B1
DR0A2 DR0B2
DR0A3 DR0B3
DCP0
WCR1A WCR1B
DR1A0 DR1B0
DR1A1 DR1B1
DR1A2 DR1B2
DR1A3 DR1B3
DCP1
WP RW0A RW0B RL0
RW1A RW1B RL1
2 FN8202.1
July 28, 2006


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 ® X9455 July 28, 2006 FN8202.1 Dual Two-wiper Digitally-Controlled (XDCP™) Potenti ometer The X9455 integrates 2 digitally controlled potentiometers (XDCP), each one with dual wipers, on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is implemented using 255 resistive elements in a seri es array. Between each element are tap points connected to wiper terminals thr ough switches. The position of each wip er on the array is controlled by the us er through the U/D or 2-wire bus interf ace. Each potentiometer wiper has assoc iated with it two volatile Wiper Counte r Register (WCR) and each WCR has assoc iated with it four non-volatile Data Re gisters 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 t.
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