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ISL22323WFV14Z 数据表(PDF) 1 Page - Intersil Corporation

部件名 ISL22323WFV14Z
功能描述  Low Noise, Low Power, I2C® Bus, 256 Taps
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
标志 INTERSIL - Intersil Corporation

ISL22323WFV14Z 数据表(HTML) 1 Page - Intersil Corporation

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1
FN6422.2
ISL22323
Dual Digitally Controlled Potentiometer (XDCP™)
Low Noise, Low Power, I2C® Bus,
256 Taps
The ISL22323 integrates two digitally controlled
potentiometers (DCP), control logic and non-volatile memory
on a monolithic CMOS integrated circuit.
The digitally controlled potentiometer is 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. The potentiometer has an associated
volatile Wiper Register (WRi) and a non-volatile Initial Value
Register (IVRi) that can be directly written to and read by the
user. The contents of the WRi control the position of the
corresponding wiper. At power up the device recalls the
contents of the DCP’s IVRi to the correspondent WRi.
The ISL22323 also has 13 general purpose non-volatile
registers that can be used as storage of lookup table for
multiple wiper position or any other valuable information.
The ISL22323 features a dual supply, that is beneficial for
applications requiring a bipolar range for DCP terminals
between V- and VCC.
Each DCP 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
• Two potentiometers in one package
• 256 resistor taps
•I2C serial interface
- Three address pins, up to eight devices per bus
• Non-volatile EEPROM storage of wiper position
• 13 General Purpose non-volatile registers
• High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @ T
+55°C
• Wiper resistance: 70
 typical @ 1mA
• Standby current <4µA max
• Shut-down current <4µA max
• Dual power supply
-VCC = 2.25V to 5.5V
- V- = -2.25V to -5.5V
•10k
 50kor 100k total resistance
• Extended industrial temperature range: -40 to +125°C
• 14 Ld TSSOP or 16 Ld QFN
• Pb-free (RoHS compliant)
Block Diagram
NON-VOLATILE
REGISTERS
POWER UP
INTERFACE,
CONTROL
AND
STATUS
LOGIC
I2C
INTERFACE
VCC
GND
SCL
SDA
A1
A0
V-
RH0
RL0
RW0
RH1
RL1
RW1
WR0
VOLATILE
REGISTER
AND
WIPER
CONTROL
CIRCUITRY
WR1
VOLATILE
REGISTER
AND
WIPER
CONTROL
CIRCUITRY
A2
Data Sheet
August 17, 2015
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas LLC 2007, 2008, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.


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