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ISL22449 bảng dữ liệu(PDF) 1 Page - Intersil Corporation

tên linh kiện ISL22449
Giải thích chi tiết về linh kiện  Quad Digitally Controlled Potentiometer
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nhà sản xuất  INTERSIL [Intersil Corporation]
Trang chủ  http://www.intersil.com/cda/home
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ISL22449 bảng dữ liệu(HTML) 1 Page - Intersil Corporation

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1
®
FN6333.2
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.
ISL22449
Quad Digitally Controlled Potentiometer (XDCP™)
Low Noise, Low Power, SPI® Bus, 128 Taps,
Wiper Only
The ISL22449 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
SPI serial 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
DCP’s IVR to the corresponding 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
Features
• Four potentiometers in one package
• 128 resistor taps
• SPI serial interface
• Non-volatile storage of wiper position
• Wiper resistance: 70
Ω typical
• Shutdown mode
• Shutdown current 6.5µA 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
• 14 Lead TSSOP
• Pb-free plus anneal product (RoHS compliant)
ISL22449
(14 LD TSSOP)
TOP VIEW
RW0
SHDN
VCC
NC
SDI
CS
NC
14
13
12
11
10
9
8
1
2
3
4
5
6
7
RW3
NC
SCK
SDO
GND
RW2
RW1
Ordering Information
PART NUMBER
PART MARKING
RESISTANCE OPTION
(k
Ω)
TEMP. RANGE
(°C)
PACKAGE
PKG. DWG. #
ISL22449UFV14Z
(Notes 1, 2)
22449 UFVZ
50
-40 to +125
14 Ld TSSOP
(Pb-free)
M14.173
ISL22449WFV14Z
(Notes 1, 2)
22449 WFVZ
10
-40 to +125
14 Ld TSSOP
(Pb-free)
M14.173
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
September 15, 2006


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