ISL22349 Datasheet, PDF (1/12 Pages) Intersil Corporation – Quad Digitally Controlled Potentiometers

ISL22349
®
Quad Digitally Controlled Potentiometers (XDCP™)
Data Sheet
September 15, 2006
FN6331.2
Low Noise, Low Power, I²C^® Bus, 128 Taps,
Wiper Only
The ISL22349 integrates four digitally controlled
potentiometers (DCP) and non-volatile memory on a
monolithic CMOS integrated circuit.
The digitally controlled potentiometers are 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. Each 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 contents of the two
DCP’s IVR to the corresponding WRs.
The DCPs can be used as a voltage divider in a wide variety
of applications including control, parameter adjustments, AC
measurement and signal processing.
Pinout
ISL22349
(14 LD TSSOP)
TOP VIEW
RW3 1
A2 2
SCL 3
SDA 4
GND 5
RW2 6
RW1 7
14 RW0
13 SHDN
12 V_CC
11 NC
10 A1
9 A0
8 NC
Features
• Four potentiometers in one package
• 128 resistor taps
• I²C serial interface
- Three address pins, up to eight devices/bus
• Non-volatile storage of wiper position
• Wiper resistance: 70Ω typical
• Shutdown mode
• Shutdown current 6.5µA 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
• 14 Ld TSSOP
• Pb-free plus anneal product (RoHS compliant)
Ordering Information
PART NUMBER
PART MARKING
RESISTANCE OPTION
(kΩ)
TEMP. RANGE
(°C)
PACKAGE
PKG. DWG. #
ISL22349UFV14Z
(Notes 1, 2)
22349 UFVZ
50
-40 to +125
14 Ld TSSOP
M14.173
(Pb-Free)
ISL22349WFV14Z
(Notes 1, 2)
22349 WFVZ
10
-40 to +125
14 Ld TSSOP
M14.173
(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.
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Copyright Intersil Americas Inc. 2006. All Rights Reserved
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