ISL22346 Datasheet, PDF (1/13 Pages) Intersil Corporation – Quad Digitally Controlled Potentiometers

ISL22346
®
Quad Digitally Controlled Potentiometers (XDCP™)
Data Sheet
July 28, 2006
FN6177.0
Low Noise, Low Power I²C^® Bus, 128 Taps
The ISL22346 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 three-terminal potentiometers
or as a two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Pinout
ISL22346
(20 LD TSSOP)
TOP VIEW
RH3 1
RL3 2
RW3 3
A2 4
SCL 5
SDA 6
GND 7
RW2 8
RL2 9
RH2 10
20 RW0
19 RL0
18 RH0
17 SHDN
16 VCC
15 A1
14 A0
13 RH1
12 RL1
11 RW1
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 @ 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
• 20 Ld TSSOP
• Pb-free plus anneal product (RoHS compliant)
Ordering Information
PART NUMBER
PART MARKING
RESISTANCE OPTION
(kΩ)
TEMP. RANGE
(°C)
PACKAGE
PKG. DWG. #
ISL22346UFV20Z
(Notes 1, 2)
22346 UFVZ
50
-40 to +125
20 Ld TSSOP
M20.173
(Pb-Free)
ISL22346WFV20Z
(Notes 1, 2)
22346 WFVZ
10
-40 to +125
20 Ld TSSOP
M20.173
(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.
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
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