ISL90727 Datasheet, PDF (1/8 Pages) Intersil Corporation – Digitally Controlled Potentiometer XDCP

®
Data Sheet
ISL90727, ISL90728
Single Volatile 128-Tap XDCP™
October 10, 2008
FN8247.6
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 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
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
• 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
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART MARKING
(Bottom Side)
R_TOTAL
(kΩ)
TEMP RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL90727WIE627Z-TK
ANH
10
-40 to +85
6 Ld SC-70
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
ISL90728UIE627Z-TK
CDY
50
-40 to +85
6 Ld SC-70
P6.049
NOTES:
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.
3. 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.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
I²C 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.