ISL90841 Datasheet, PDF (1/12 Pages) Intersil Corporation – Low Noise, Low Power I2C Bus, 256 Taps

ISL90841
®
Quad Digitally Controlled Potentiometers (XDCP™)
Data Sheet
August 1, 2005
FN8094.0
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.
Ordering Information
PART NUMBER
PACKAGE
TEMP
RANGE
(°C)
RESISTANCE
OPTION
(Ω)
ISL90841UIV1427 14 Ld TSSOP -40 to +85
50K
ISL90841UIV1427Z 14 Ld TSSOP -40 to +85
50K
(Notes 1 & 2)
(Pb-Free)
ISL90841WIV1427 14 Ld TSSOP -40 to +85
10K
ISL90841WIV1427Z 14 Ld TSSOP -40 to +85
10K
(Notes 1 & 2)
(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. Contact factory for availability.
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
Functional Diagram
V_CC
R_H0
R_H1
R_H2
R_H3
SCL
SDA
A0
A1
I²C
INTERFACE
GND
1
R_W0
R_W1
R_W2
R_W3
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved
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