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Intersil Corporation |
ISL22319
® Single Digitally Controlled Potentiometer (XDCP™)
Data Sheet
July 3, 2006
FN6310.0
Low Noise, Low Power, I2C® Bus,
128 Taps, Wiper Only
The ISL22319 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 wipers are controlled by the user through the
I2C bus 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
www.DataSheet4U.com
ISL22319
(8 LD MSOP)
TOP VIEW
SCL
SDA
A1
A0
1
2
3
4
8 VCC
7 RW
6 SHDN
5 GND
Features
• 128 resistor taps
• I2C serial interface
- Two address pins, up to four devices/bus
• 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 Ld MSOP
• Pb-free plus anneal product (RoHS compliant)
Ordering Information
PART NUMBER
PART MARKING
RESISTANCE OPTION
(kΩ)
TEMP. RANGE
(°C)
PACKAGE
PKG. DWG. #
ISL22319UFU8Z
(Notes 1, 2)
319UZ
50
-40 to +125
8 Ld MSOP
M8.118
(Pb-Free)
ISL22319WFU8Z
(Notes 1, 2)
319WZ
10
-40 to +125
8 Ld MSOP
M8.118
(Pb-Free)
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
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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.
Block Diagram
SCL
SDA
A0
A1
I2C
INTERFACE
ISL22319
VCC
POWER-UP
INTERFACE,
CONTROL
AND
STATUS
LOGIC
WR
RW
SHDN
NON-VOLATILE
REGISTERS
Pin Descriptions
MSOP PIN
1
2
3
4
5
6
7
8
SYMBOL
SCL
SDA
A1
A0
GND
SHDN
RW
VCC
GND
DESCRIPTION
Open drain I2C interface clock input
Open drain serial data I/O for the I2C interface
Device address input for the I2C interface
Device address input for the I2C interface
Device ground pin
Shutdown active low input
“Wiper” terminal of DCP
Power supply pin
2 FN6310.0
July 3, 2006
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