1
FN8247.8
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2005, 2006, 2008, 2011, 2012. All Rights Reserved
I
2
C Bus is a registered trademark owned by NXP Semiconductors Netherlands, B.V.
XDCP is a trademark of Intersil Americas Inc. Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ISL90727, ISL90728
Single Volatile 128-Tap XDCP™
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 I
2
C Bus™.
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.
Pinout
ISL90727, ISL90728
(6 LD SC-70)
TOP VIEW
Features
• Volatile Solid-State Potentiometer
•I
2
C 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
• Packaging
- 6 Ld SC-70
• Pb-Free (RoHS Compliant)
Applications
• 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
1
2
3
6
4
5
VDD
GND
SCL
RH
RW
SDA
Ordering Information
PART NUMBER
(Notes 1, 2, 3, 4)
PART MARKING
(Bottom Side)
R
TOTAL
(kΩ)
TEMP RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL90727UIE627Z-TK ANI 50 -40 to +85 6 Ld SC-70 P6.049
ISL90727WIE627Z-T7A ANH 10 -40 to +85 6 Ld SC-70 P6.049
ISL90727WIE627Z-TK ANH 10 -40 to +85 6 Ld SC-70 P6.049
ISL90728UIE627Z-TK CDY 50 -40 to +85 6 Ld SC-70 P6.049
ISL90728WIE627Z-T7A CCF 10 -40 to +85 6 Ld SC-70 P6.049
ISL90728WIE627Z-TK CCF 10 -40 to +85 6 Ld SC-70 P6.049
NOTES:
1. Please refer to TB347
for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin
plate plus anneal (e3 termination finish, which is 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.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL90727
, ISL90728. For more information on MSL please see
Tech Brief TB363
.
4. ISL90727 has an I
2
C address 5Ch and ISL90728 has an I
2
C address 7Ch.
Data Sheet May 10, 2012
