ISL90843 Datasheet, PDF (1/10 Pages) Intersil Corporation – Quad Digital Controlled Potentiometers (XDCP™)

ISL90843
®
Quad Digital Controlled Potentiometers (XDCP™)
Data Sheet
March 29, 2006
FN8095.2
Low Noise, Low Power, I²C^® Bus,
256 Taps
The ISL90843 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.
The DCPs can be used as a voltage divider in a wide variety
of applications including control, AC measurement, and
signal processing.
Features
• Four potentiometers in one package
• 256 resistor taps–0.4% resolution
• I²C serial interface
- Two address pins allow up to four devices/bus
• Wiper resistance: 70Ω typical @ 3.3V
• Standby current <5µA max
• Power supply: 2.7V to 5.5V
• 10kΩ or 50kΩ total resistance
• 10 Ld MSOP package
• Pb-free plus anneal product (RoHS compliant)
Pinout
ISL90843
(10 LD MSOP)
TOP VIEW
RW3 1
SCL 2
SDA 3
GND 4
RW2 5
10
RW0
9
V_CC
8
A1
7
A0
6
RW1
Ordering Information
PART NUMBER
(Note)
PART MARKING
RESISTANCE OPTION
(kΩ)
TEMP RANGE
(°C)
PACKAGE
(Pb-Free)
ISL90843WIU1027Z*
DET
10
-40 to +85
10 Ld MSOP
ISL90843UIU1027Z*
DES
50
-40 to +85
10 Ld MSOP
*Add "-TK" suffix for tape and reel.
NOTE: 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.
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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