1
FN6311.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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ISL22419
Single Digitally Controlled Potentiometer (XDCP)
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: 70
typical @ 3.3V
Shutdown mode
Shutdown current 5A max
Power supply: 2.7V to 5.5V
50k
or 10k total resistance
High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @
°
C
8 Lead MSOP
Pb-free plus anneal product (RoHS compliant)
Pinout
ISL22419
(8 LD MSOP)
TOP VIEW
1
2
3
4
8
7
6
5
SDO
CS
SDI
Vcc
SCK
GND
SHDN
RW
T55
≤
Ordering Information
PART NUMBER
PART MARKING
RESISTANCE OPTION
(k
)
TEMP. RANGE
(°C)
PACKAGE
PKG. DWG. #
ISL22419UFU8Z
(Notes 1, 2)
419UZ
50
-40 to +125
8 Ld MSOP
(Pb-Free)
M8.118
ISL22419WFU8Z
(Notes 1, 2)
419WZ
10
-40 to +125
8 Ld MSOP
(Pb-Free)
M8.118
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
Data Sheet
June 28, 2006