ISL90727_06 Datasheet, PDF (1/8 Pages) Intersil Corporation – Digitally Controlled Potentiometer

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Data Sheet
ISL90727, ISL90728
Single Volatile 128-Tap XDCP
August 2, 2006
FN8247.4
Digitally Controlled Potentiometer
(XDCP™)
The Intersil ISL90727 and ISL90728 are digitally controlled
potentiometers (XDCP). Each device consists of a resistor
array, wiper switches, and a control section. The wiper
position is controlled by an I²C 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:
• Mechanical potentiometer replacement
• Transducer adjustment of pressure, temperature, position,
chemical, and optical sensors
• RF amplifier biasing
• LCD brightness and contrast adjustment
• Gain control and offset adjustment
Pinout
ISL90727, ISL90728
(6 LD SC-70)
TOP VIEW
VDD 1
GND 2
SCL 3
6 RH
5 RW
4 SDA
Features
• Volatile Solid-State Potentiometer
• I²C Serial Bus Interface
• DCP Terminal Voltage, 2.7V to 5.5V
• Low Tempco
- Rheostat - 45 ppm/°C typical
- Divider - 15 ppm/°C typical
• 128 Wiper Tap Points
- Wiper resistance 70Ω typ at V_CC = 3.3V
• Low Power CMOS
- Active current, 200µA max
- Standby current, 500nA max
• Available R_TOTAL Values = 50kΩ, 10kΩ
• Power on Preset to Midscale
• Direct Replacement for AD5247
• Packaging
- 6 Ld SC-70
• Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
PART NUMBER
(See Notes 1, 2)
ISL90727WIE627Z-TK
PART MARKING
ANH
R_TOTAL (kΩ)
10
TEMP RANGE
(°C)
-40 to +85
PACKAGE
(Pb-Free)
6 Ld SC-70
PKG. DWG. #
P6.049
ISL90727UIE627Z-TK
ANI
50
-40 to +85
6 Ld SC-70
P6.049
ISL90728WIE627Z-TK
CCF
10
-40 to +85
6 Ld SC-70
P6.049
NOTES:
1. 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
2. ISL90727 has an I²C address 5Ch and ISL90728 has an I²C address 7Ch
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved
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