ISL22323 Datasheet, PDF (1/18 Pages) Intersil Corporation – Dual Digitally Controlled Potentiometer XDCP

ISL22323
® _{Dual Digitally Controlled Potentiometer (XDCP™)}
Data Sheet
March 13, 2008
FN6422.1
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: 70Ω typical @ 1mA
• Standby current <4µA max
• Shut-down current <4µA max
• Dual power supply
- V_CC = 2.25V to 5.5V
- V- = -2.25V to -5.5V
• 10kΩ, 50kΩ or 100kΩ total resistance
• Extended industrial temperature range: -40 to +125°C
• 14 Ld TSSOP or 16 Ld QFN
• Pb-free (RoHS compliant)
Ordering Information
PART NUMBER
(Notes 1, 2)
ISL22323TFV14Z
ISL22323TFR16Z
ISL22323UFV14Z
PART MARKING
22323 TFVZ
223 23TFRZ
22323 UFVZ
RESISTANCE
OPTION
(kΩ)
100
100
50
TEMPERATURE
RANGE
(°C)
-40 to +125
-40 to +125
-40 to +125
PACKAGE
(Pb-Free)
14 Ld TSSOP
16 Ld QFN
14 Ld TSSOP
PKG. DWG. #
M14.173
L16.4x4A
M14.173
ISL22323UFR16Z
223 23UFRZ
50
-40 to +125
16 Ld QFN
L16.4x4A
ISL22323WFV14Z 22323 WFVZ
10
-40 to +125
14 Ld TSSOP
M14.173
ISL22323WFR16Z 223 23WFRZ
10
-40 to +125
16 Ld QFN
L16.4x4A
NOTES:
1. 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.
2. Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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