ISL22329
®
Dual Digitally Controlled Potentiometers (XDCP™)
Data Sheet
September 26, 2006
FN6330.1
2 ®
Low Noise, Low Power, I C Bus, 128 Taps,
Wiper Only
Features
• Two potentiometers in one package
• 128 resistor taps
The ISL22329 integrates two digitally controlled
potentiometers (DCP) and non-volatile memory on a
monolithic CMOS integrated circuit.
2
• I C serial interface
- Three address pins, up to eight devices/bus
• Non-volatile storage of wiper position
• Wiper resistance: 70Ω typical @ 3.3V
• Shutdown mode
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
2
I C bus interface. Each potentiometer has an associated
volatile Wiper Register (WR) and a non-volatile Initial Value
Register (IVR) that can be directly written to and read by the
user. The contents of the WR controls the position of the
wiper. At power-up the device recalls the contents of the two
DCP’s IVR to the corresponding WRs.
• Shutdown current 5µA max
• Power supply: 2.7V to 5.5V
• 50kΩ or 10kΩ total resistance
The DCPs can be used as a voltage divider in a wide variety
of applications including control, parameter adjustments, AC
measurement and signal processing.
• High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @ T < +55°C
Pinout
• 10 Ld MSOP
ISL22329
(10 LD MSOP)
TOP VIEW
• Pb-free plus anneal product (RoHS compliant)
A2
SCL
SDA
GND
RW1
RW0
1
2
3
4
5
10
9
SHDN
V
8
CC
A1
A0
7
6
Ordering Information
RESISTANCE OPTION
TEMP. RANGE
PART NUMBER
PART MARKING
329UZ
(kΩ)
(°C)
PACKAGE
10 Ld MSOP
PKG. DWG. #
ISL22329UFU10Z
(Notes 1, 2)
50
10
-40 to +125
M10.118
(Pb-free)
ISL22329WFU10Z
(Notes 1, 2)
329WZ
-40 to +125
10 Ld MSOP
(Pb-free)
M10.118
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” suffix for 1,000 Tape and Reel option
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) and XDCP are registered trademarks of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.