ISL90727, ISL90728
®
Single Volatile 128-Tap XDCP™
Data Sheet
October 10, 2008
FN8247.6
Digitally Controlled Potentiometer
(XDCP™)
Features
• Volatile Solid-State Potentiometer
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
2
• I C Serial Bus Interface
• DCP Terminal Voltage, 2.7V to 5.5V
2
position is controlled by an I C Bus™.
• Low Tempco
- Rheostat - 45 ppm/°C Typical
- Divider - 15 ppm/°C Typical
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.
• 128 Wiper Tap Points
- Wiper Resistance 70Ω Typ at V
= 3.3V
CC
• Low Power CMOS
Pinout
- Active Current, 200µA Max
- Standby Current, 500nA Max
ISL90727, ISL90728
(6 LD SC-70)
• Available R
TOTAL
Values = 50kΩ, 10kΩ
TOP VIEW
• Power-on Preset to Midscale
VDD
GND
SCL
1
2
3
6
5
4
RH
• Packaging
- 6 Ld SC-70
RW
SDA
• 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
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART MARKING
(Bottom Side)
R
TEMP RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
TOTAL
(kΩ)
ISL90727WIE627Z-TK
ISL90727UIE627Z-TK
ISL90728WIE627Z-TK
ISL90728UIE627Z-TK
NOTES:
ANH
10
50
10
50
-40 to +85
-40 to +85
-40 to +85
-40 to +85
6 Ld SC-70
P6.049
ANI
6 Ld SC-70
6 Ld SC-70
6 Ld SC-70
P6.049
P6.049
P6.049
CCF
CDY
1. 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.
2. Please refer to TB347 for details on reel specifications.
2
2
3. ISL90727 has an I C address 5Ch and ISL90728 has an I C address 7Ch.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
2
I C Bus is a registered trademark owned by NXP Semiconductors Netherlands, B.V.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005, 2006, 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.