ISL95310 Datasheet, PDF (1/8 Pages) Intersil Corporation – Terminal Voltage 0V to 13.2V, 128 Taps Up/Down Interface

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Datasheet
ISL95310
Digitally Controlled Potentiometer (XDCP™)
May 6, 2005
FN8083.0
Terminal Voltage 0V to 13.2V, 128 Taps
Up/Down Interface
The Intersil ISL95310 is a digitally controlled potentiometer
(XDCP). The device consists of a resistor array, wiper
switches, a control section, and nonvolatile memory. The
wiper position is controlled by an Up/Down interface.
The potentiometer is implemented by a resistor array
composed of 127 resistive elements and a wiper switching
network. Between each element and at either end are tap
points accessible to the wiper terminal. The wiper of each
potentiometer has an associated volatile Wiper Counter
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 on the
resistor array through the switches. At power-up, the device
recalls the contents of the default data registers to the
corresponding WR. The position of the wiper element is
controlled by the CS, U/D, and INC inputs. The position of
the wiper can be stored in nonvolatile memory and then be
recalled upon a subsequent power-up operation.
The device can be used as a three-terminal potentiometer or
as a two-terminal variable resistor in a wide variety of
applications including:
• LCD contrast control
• Parameter and bias adjustments
• Mechanical potentiometer replacement
• Industrial and automotive control
Ordering Information
PART NUMBER
RESISTANCE
OPTION
(Ω)
ISL95310WIU10Z
10K
(See Note)
ISL95310UIU10Z
50K
(See Note)
Add “-TK” suffix for tape and reel.
TEMP
RANGE
(°C)
-40 to +85
-40 to +85
PACKAGE
10 Ld MSOP
(Pb-Free)
10 Ld MSOP
(Pb-Free)
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.
Features
• Non-volatile solid-state potentiometer
• Up/down interface with chip select enable
• DCP terminal voltage, 0 to +13.2V
• 128 wiper tap points - 0.8% resolution
- Wiper position stored in nonvolatile memory and
recalled on power-up
• 127 resistive elements
- Temperature compensated
- Low wiper resistance 70Ω typical @ 3.3V
• Low power CMOS
- Standby current, 2µA at V_CC = +3.6V
• High reliability
- Endurance, 200,000 data changes per bit
- Register data retention 50 years @ T ≤ 75°C
• R_TOTAL values = 10kΩ, 50kΩ
• 10-lead MSOP package
- Pb-free plus anneal available (RoHS compliant)
Pinout
ISL95310
(10 LD MSOP)
TOP VIEW
U/D 1
GND ²
V_CC
3
CS 4
NC 5
10
INC
9
V+
8
R_L
7
R_W
6
R_H
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | 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.