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ISL22346 bảng dữ liệu(PDF) 1 Page - Intersil Corporation

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Giải thích chi tiết về linh kiện  Quad Digitally Controlled Potentiometers
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ISL22346 bảng dữ liệu(HTML) 1 Page - Intersil Corporation

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1
®
FN6177.0
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.
ISL22346
Quad Digitally Controlled Potentiometers (XDCP™)
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
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: 70
Ω typical @ 3.3V
• Shutdown mode
• Shutdown current 5µA max
• Power supply: 2.7V to 5.5V
•50k
Ω 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)
ISL22346
(20 LD TSSOP)
TOP VIEW
RW0
RL0
RH0
SHDN
VCC
A1
A0
RH1
RL1
RW1
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
RH3
RL3
RW3
A2
SCL
SDA
GND
RW2
RL2
RH2
Ordering Information
PART NUMBER
PART MARKING
RESISTANCE OPTION
(k
Ω)
TEMP. RANGE
(°C)
PACKAGE
PKG. DWG. #
ISL22346UFV20Z
(Notes 1, 2)
22346 UFVZ
50
-40 to +125
20 Ld TSSOP
(Pb-Free)
M20.173
ISL22346WFV20Z
(Notes 1, 2)
22346 WFVZ
10
-40 to +125
20 Ld TSSOP
(Pb-Free)
M20.173
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
Data Sheet
July 28, 2006


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