ISL22511 Datasheet, PDF (1/13 Pages) Intersil Corporation – Low Noise, Low Power, 32 Taps, Push Button Controlled Potentiometer Single Push Button Controlled Potentiometer XDCP

ISL22511
®
Single Push Button Controlled Potentiometer (XDCP™)
Data Sheet
July 16, 2009
FN6678.1
Low Noise, Low Power, 32 Taps, Push
Button Controlled Potentiometer
The Intersil ISL22511 is a three-terminal digitally-controlled
potentiometer (XDCP) implemented by a resistor array
composed of 31 resistive elements and a wiper switching
network. The ISL22511 features a push button control, a
shutdown mode, as well as an industry-leading µTQFN
package.
The push button control has individual PU and PD inputs for
adjusting the wiper. To eliminate redundancy, the wiper
position will automatically increment or decrement if one of
these inputs is held longer than one second.
Forcing both PU and PD low for more than two seconds
activates shutdown mode. Shutdown mode disconnects the
top of the resistor chain and moves the wiper to the lowest
position, minimizing power consumption.
The three terminals accessing the resistor chain naturally
configure the ISL22511 as a voltage divider. A rheostat is
easily formed by floating an end terminal or connecting it to
the wiper.
NC
V_CC (SUPPLY VOLTAGE)
O
PU ₁
9 ^VCC
PD 2 µTQFN 8 ASE
RH ₃ (Top View) 7 RL
PU
RH
V_{SS 4}
6 ^RW
NC
PD
CONTROL
BLOCK
RW
ASE
O
PU 1
8 V_CC
RL
PD 2 SOIC 7 ASE
RH 3 (Top View) 6 RL
V_SS
4
5 RW
V_SS (GROUND)
Features
• Solid-State Non-Volatile Potentiometer
• Push Button Controlled
• Single or Auto Increment/Decrement
- Fast Mode after 1s Button Press
• AUTOSTORE of Last Wiper Position or Manual Store of
Wiper Position
• Shutdown Mode
• 32 Wiper Tap Points
- Middle Scale Wiper Position on Power-Up
• Low Power CMOS
- V_CC = 2.7V to 5.5V
- Terminal Voltage, 0 to V_CC
- Standby Current, 3µA Max
• R_TOTAL Value = 10kΩ, 50kΩ
• High reliability
- Endurance: 1,000,000 data changes per bit per register
- Register data retention: 50 years @ T ≤ +55°C
• Packages
- 8 Ld SOIC
- 10 Ld µTQFN (2.1mmx1.6mm)
• Pb-Free (RoHS Compliant)
Applications
• Volume Control
• LED/LCD Brightness Control
• Contrast Control
• Programming Bias Voltages
• Ladder Networks
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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XDCP is a trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2008, 2009. All Rights Reserved
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