ISL90841_06 Datasheet, PDF (1/12 Pages) Intersil Corporation – Quad Digitally Controlled Potentiometers (XDCP™)

ISL90841
®
Quad Digitally Controlled Potentiometers (XDCP™)
Data Sheet
February 8, 2006
FN8094.1
Low Noise, Low Power I²C^® Bus, 256 Taps
The ISL90841 integrates four digitally controlled
potentiometers (XDCP) on a monolithic CMOS integrated
circuit.
The digitally controlled potentiometers are implemented with
a combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
I²C bus interface. Each potentiometer has an associated
Wiper Register (WR) that can be directly written to and read
by the user. The contents of the WR controls the position of
the wiper.
All four potentiometers have one terminal tied to GND. The
DCPs can be used as a resistor divider or as two-terminal
variable resistors in a wide variety of applications including
control, parameter adjustments, and signal processing.
Features
• Four potentiometers in one package
• 256 resistor taps - 0.4% resolution
• I²C serial interface
• Wiper resistance: 70Ω typical @ 3.3V
• Standby current <5µA max
• Power supply: 2.7V to 5.5V
• 50kΩ, 10kΩ total resistance
• 14 Lead TSSOP
• Pb-free plus anneal available (RoHS compliant)
Pinout
ISL90841
(14 LEAD TSSOP)
TOP VIEW
RH3 1
RW3 2
SCL 3
SDA 4
GND 5
RW2 6
RH2 7
14 RW0
13 RH0
12 VCC
11 A1
10 A0
9 RH1
8 RW1
Ordering Information
PART NUMBER
PART MARKING
RESISTANCE OPTION
(Ω)
TEMP RANGE
(°C)
PACKAGE
ISL90841UIV1427Z (Notes 1 & 2)
90841UI27Z
50K
-40 to +85
14 Ld TSSOP (Pb-Free)
ISL90841WIV1427Z (Notes 1 & 2) 90841WI27Z
10K
-40 to +85
14 Ld TSSOP (Pb-Free)
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. Add “-TK” to suffix for Tape and Reel.
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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