ISL95711 Datasheet, PDF (1/12 Pages) Intersil Corporation – Terminal Voltage 3V or 5V, 128 Taps I2C Serial Interface

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Data Sheet
ISL95711
Digitally Controlled Potentiometer (XDCP™)
August 15, 2005
FN8241.2
Terminal Voltage ±3V or ±5V, 128 Taps I²C
Serial Interface
The Intersil ISL95711 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 a I²C interface.
The potentiometer is implemented by a resistor array
composed of 127 resistive elements and a wiper switching
network. The wiper terminal can be connected to either end
of the resistor array or at any one of the Tap Positions in
between, providing 128 steps of resolution between R_L and
R_H. The “position” of the wiper is determined by the value
assigned to the volatile Wiper Register (WR). This register
has an associated non-volatile Initial Value Register (IVR).
The value stored in the IVR will be written into the WR at
power-up, allowing wiper position recall after power
interruption. The WR and the IVR can be directly written to
and read from using standard I²C interface protocol. The
device is available in either a 10kΩ or 50kΩ version.
The device can be used as a three-terminal potentiometer or
as a two-terminal variable resistor in a wide variety of
applications including:
• Industrial and automotive control
• Parameter and bias adjustments
• Amplifier bias and control
Ordering Information
RESISTANCE TEMP
PACKAGE
PART NUMBER OPTION (Ω) RANGE (°C) (Pb-Free)
ISL95711WIU10Z
10K
(Notes 1& 2)
-40 to +85 10-Ld MSOP
ISL95711UIU10Z
50K
(Notes 1& 2)
-40 to +85 10-Ld MSOP
NOTES:
1. Add “-T” suffix for tape and reel.
2. 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
• I²C Serial Interface with Hardwire Slave Address Allows
Up to Four Devices
• DCP Terminal Voltage, from V- to V_CC
• 128 Wiper Tap Points
- Wiper position can be stored in nonvolatile memory and
recalled on power-up
• 127 Resistive Elements
- Typical tempco ±50ppm/°C
- Ratiometric Tempco ±4ppm/°C
- End to end resistance range ±20%
• Low Power CMOS
- Standby current, 1µA
- Active current, 200µA max
- V_CC = 3V to 5.5V
- V- = -3V to -5.5V
• High Reliability
- Endurance, 200,000 data changes per bit
- Register data retention, 50 years
• R_TOTAL Values = 10kΩ, 50kΩ
• Package
- 10-lead MSOP
- Pb-Free plus anneal available (RoHS compliant)
Pinout
ISL95711
(10-LD MSOP)
TOP VIEW
SDA 1
V- 2
GND
3
A1 4
A0
5
10
SCL
9
V_CC
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 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil, Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
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