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ISL22446WFV20Z Scheda tecnica(PDF) 1 Page - Intersil Corporation

Il numero della parte ISL22446WFV20Z
Spiegazioni elettronici  Quad Digitally Controlled Potentiometer XDCP
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Produttore elettronici  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL22446WFV20Z Scheda tecnica(HTML) 1 Page - Intersil Corporation

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1
®
FN6181.2
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, 2008, 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL22446
Quad Digitally Controlled Potentiometer (XDCP™)
Low Noise, Low Power, SPIBus, 128 Taps
The ISL22446 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 DCPs can be used as three-terminal potentiometers or
as two-terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing.
Features
• Four potentiometers in one package
• 128 resistor taps
• SPI serial interface
• Non-volatile storage of wiper position
• Wiper resistance: 70
Ω typical @ VCC = 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 and 20 Ld TQFN package
• Pb-free (RoHS compliant)
Pinouts
ISL22446
(20 LD TSSOP)
TOP VIEW
ISL22446
(20 LD TQFN)
TOP VIEW
RW0
RL0
RH0
SHDN
VCC
SDI
CS
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
NC
SCK
SDO
GND
RW2
RL2
RH2
1
2
3
4
6
18
20 19
RL3
RH2
RW1
8
17
9
RH1
RW0
RL1
15
14
13
12
7
RL0
RH3
16
5
RW3
RL2
11
10
O
Ordering Information
PART NUMBER
(Note)
PART
MARKING
RESISTANCE OPTION
(k
Ω)
TEMP. RANGE
(°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL22446UFV20Z*
22446 UFVZ
50
-40 to +125
20 Ld TSSOP
M20.173
ISL22446UFRT20Z*
224 46UFZ
50
-40 to +125
20 Ld 4x4 TQFN
L20.4x4A
ISL22446WFV20Z*
22446 WFVZ
10
-40 to +125
20 Ld TSSOP
M20.173
ISL22446WFRT20Z*
224 46WFZ
10
-40 to +125
20 Ld 4x4 TQFN
L20.4x4A
*Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is 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.
Data Sheet
September 9, 2009


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