廬
ISL90727
Single Volatile 128-Tap XDCP
Data Sheet
August 1, 2005
FN8247.1
PRELIMINARY
Digitally Controlled Potentiometer
(XDCP鈩?
The Intersil ISL90727 is a digitally controlled potentiometer
(XDCP). The device consists of a resistor array, wiper
switches, and a control section. The wiper position is
controlled by an I
2
C 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 position of the
wiper element is controlled by the SDA and SCL inputs.
The device can be used in a wide variety of applications
including:
鈥?Mechanical potentiometer replacement
鈥?Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
鈥?RF amplifier biasing
鈥?LCD brightness and contrast adjustment
鈥?Gain control and offset adjustment
Features
鈥?Volatile Solid-State Potentiometer
鈥?I
2
C Serial Bus Interface
鈥?DCP Terminal Voltage, 2.7V to 5.5V
鈥?Low Tempco
- Rheostat - 45 ppm/
擄C typical @ 25擄C
- Divider - 15 ppm/
擄C typical @ 25擄C
鈥?128 Wiper Tap Points
- Wiper resistance 70鈩?typ at V
CC
= 3.3V
鈥?Low Power CMOS
- Active current, 200碌A(chǔ) max
- Standby current, 500nA max
鈥?Available R
TOTAL
Values = 50k鈩? 10k鈩?/div>
鈥?Power on Preset to Midscale
鈥?Direct replacement for AD5247
鈥?Packaging
- 6 Ld SC70
鈥?Pb-free plus anneal available (RoHS compliant)
Ordering Information
PART NUMBER
(See Note)
ISL90727WIE6Z
ISL90727UIE6Z
ISL90727WIE6Z-TK
ISL90727UIE6Z-TK
RESISTANCE
OPTION (鈩?
10K
50K
10K
50K
TEMP
RANGE
(擄C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
PACKAGE
(Pb-Free)
6-Pin SC-70
6-Pin SC-70
6-Pin SC-70
6-Pin SC-70
Pinout
ISL90727
(6-PIN SC70)
TOP VIEW
VDD 1
GND 2
SCL 3
6 RH
5 RW
4 SDA
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.
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.
INTERSIL
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