ISL22419 Datasheet, PDF (1/13 Pages) Intersil Corporation – Low Noise, Low Power, SPI Bus, 128 Taps, Wiper Only

ISL22419
®
Single Digitally Controlled Potentiometer (XDCP™)
Data Sheet
September 8, 2009
FN6311.1
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.
Pinout
SCK
SDO
SDI
CS
ISL22419
(8 LD MSOP)
TOP VIEW
1
8
2
7
3
6
4
5
V_CC
RW
SHDN
GND
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 (RoHS compliant)
Ordering Information
PART
NUMBER
PART
MARKING
RESISTANCE OPTION TEMP. RANGE
(kΩ)
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL22419UFU8Z*
419UZ
50
-40 to +125 8 Ld MSOP
M8.118
ISL22419WFU8Z*
419WZ
10
-40 to +125 8 Ld MSOP
M8.118
*Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is 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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