ISL22414
®
Single Digitally Controlled Potentiometer (XDCP™)
Data Sheet
December 16, 2010
FN6424.1
®
Low Noise, Low Power, SPI Bus, 256 Taps
Features
The ISL22414 integrates a single digitally controlled
potentiometer (DCP), control logic and non-volatile memory
on a monolithic CMOS integrated circuit.
• 256 resistor taps
• SPI serial interface with write/read capability
• Daisy Chain Configuration
• Shutdown mode
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 control the position of the
wiper. At power-up the device recalls the contents of the
DCP’s IVR to the WR.
• Non-volatile EEPROM storage of wiper position
• 14 General Purpose non-volatile registers
• High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @ T ≤ +55°C
• Wiper resistance: 70Ω typical @ 1mA
• Standby current <2.5µA max
The ISL22414 also has 14 General Purpose non-volatile
registers that can be used as storage of lookup table for
multiple wiper position or any other valuable information.
• Shutdown current <2.5µA max
• Dual power supply
The ISL22414 features a dual supply that is beneficial for
applications requiring a bipolar range for DCP terminals
between V- and VCC.
- VCC = 2.25V to 5.5V
- V- = -2.25V to -5.5V
The DCP can be used as three-terminal potentiometer or as
two-terminal variable resistor in a wide variety of applications
including control, parameter adjustments, and signal
processing.
• 10kΩ, 50kΩ or 100kΩ total resistance
• Extended industrial temperature range: -40°C to +125°C
• Military temperature range: -55 to +125°C
• 10 Lead MSOP
Pinout
ISL22414
(10 LD MSOP)
TOP VIEW
• Pb-free (RoHS compliant)
O
10
9
SCK
SDO
SDI
CS
Vcc
1
2
3
4
5
RH
RW
8
7
RL
V-
GND
6
Ordering Information
PART NUMBER
(NOTES 1, 2)
PART
RESISTANCE OPTION
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
MARKING
414TZ
414UZ
(kΩ)
ISL22414TFU10Z
ISL22414UFU10Z
ISL22414WFU10Z
ISL22414WMU10Z
NOTES:
100
50
-40 to +125
-40 to +125
-40 to +125
-55 to +125
10 Ld MSOP
M10.118
10 Ld MSOP
10 Ld MSOP
10 Ld MSOP
M10.118
M10.118
M10.118
414WZ
414WM
10
10
1. 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.
2. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
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