®
X95840
Low Noise/Low Power/2-Wire Bus/256 Taps
Data Sheet
September 27, 2005
FN8213.1
Quad Digital Controlled Potentiometers
(XDCP™)
The X95840 integrates four digitally controlled
potentiometers (XDCP) on a monolithic CMOS integrated
circuit.
The digitally controlled potentiometers are implemented with
a combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
2-wire bus interface. Each potentiometer has an associated
volatile Wiper Register (WR) and a non-volatile Initial Value
Register (IVR), that can be directly written to and read by the
user. The contents of the WR controls the position of the
wiper. At power up the device recalls the contents of the four
DCP’s IVR to the corresponding WRs.
The DCPs can be used as three-terminal potentiometers or
as two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Features
• Four Potentiometers in One Package
• 256 Resistor Taps-0.4% Resolution
• 2-Wire Serial Interface
• Wiper Resistance: 70Ω Typical @ 3.3V
• Non-Volatile Storage of Wiper Position
• Standby Current < 5µA Max
• Power Supply: 2.7V to 5.5V
• 50kΩ, 10kΩ Total Resistance
• High Reliability
- Endurance: 150,000 data changes per bit per register
- Register data retention: 50 years @ T
≤
75°C
• 20 Ld TSSOP
• Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
PART NUMBER
X95840WV20I-2.7*
PART
MARKING
X95840WV G
RESISTANCE
OPTION
10kΩ
10kΩ
50kΩ
50kΩ
PACKAGE
20 Ld TSSOP
20 Ld TSSOP
(Pb-free)
20 Ld TSSOP
20 Ld TSSOP
(Pb-free)
Pinouts
X95840
(20 LD TSSOP)
TOP VIEW
RH3
RL3
RW3
A2
SCL
SDA
GND
RW2
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
RW0
RL0
RH0
WP
V
CC
A1
A0
RH1
RL1
RW1
X95840WV20IZ-2.7* X95840WV Z G
(Note)
X95840UV20I-2.7*
X95840UV G
X95840UV20IZ-2.7* X95840UV Z G
(Note)
*Add “T1” suffix for tape and reel.
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.
RL2
RH2
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. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
INTERSIL [ INTERSIL CORPORATION ]
