®
ISL22419
Single Digitally Controlled Potentiometer (XDCP™)
Data Sheet
June 28, 2006
FN6311.0
Low Noise, Low Power, SPI
®
Bus, 128 Taps,
Wiper Only
The ISL22419 integrates a single digitally controlled
potentiometer (DCP) and non-volatile memory on a
monolithic CMOS integrated circuit.
The digitally controlled potentiometer is implemented with a
combination of resistor elements and CMOS switches. The
position of the wiper is controlled by the user through the SPI
serial interface. The 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 content of the
DCP’s IVR to the WR.
The DCP can be used as a voltage divider in a wide variety
of applications including control, parameter adjustments, AC
measurement and signal processing.
Features
• 128 resistor taps
• SPI serial interface
• Non-volatile storage of wiper position
• Wiper resistance: 70Ω typical @ 3.3V
• Shutdown mode
• Shutdown current 5µA max
• Power supply: 2.7V to 5.5V
• 50kΩ or 10kΩ total resistance
• High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @
T
≤
55
°
C
• 8 Lead MSOP
• Pb-free plus anneal product (RoHS compliant)
Pinout
ISL22419
(8 LD MSOP)
TOP VIEW
SCK
SDO
SDI
CS
Vcc
RW
SHDN
GND
1
2
3
4
8
7
6
5
Ordering Information
PART NUMBER
ISL22419UFU8Z
(Notes 1, 2)
ISL22419WFU8Z
(Notes 1, 2)
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
PART MARKING
419UZ
419WZ
RESISTANCE OPTION
(kΩ)
50
10
TEMP. RANGE
(°C)
-40 to +125
-40 to +125
PACKAGE
8 Ld MSOP
(Pb-Free)
8 Ld MSOP
(Pb-Free)
PKG. DWG. #
M8.118
M8.118
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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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.
INTERSIL [ INTERSIL CORPORATION ]
