ISL22512 Datasheet, PDF (1/11 Pages) Intersil Corporation – Single Push Button Controlled Potentiometer XDCP

ISL22512
®
Single Push Button Controlled Potentiometer (XDCP™)
Data Sheet
March 24, 2008
FN6679.0
Low Noise, Low Power, 16 Taps, Push
Button Controlled Potentiometer
The Intersil ISL22512 is a three-terminal digitally-controlled
potentiometer (XDCP) implemented by a resistor array
composed of 15 resistive elements and a wiper switching
network. The ISL22512 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 ISL22512 as a voltage divider. A rheostat is
easily formed by floating an end terminal or connecting it to
the wiper.
V_CC (SUPPLY VOLTAGE)
RH
PU
CONTROL
PD
BLOCK
RW
ASE
RL
V_SS (GROUND)
NC
O
PU 1
9 VCC
PD 2 ^µTQFN 8 ASE
RH 3 ^{(Top View)} 7 RL
V_{SS 4}
6 ^RW
NC
O
PU
1
8
V_CC
PD
2 SOIC 7
ASE
RH
3 (Top View) 6
RL
V_SS
4
5
RW
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
• 16 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
• 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
Ordering Information
PART
NUMBER
PART
MARKING
R_TOTAL
(kΩ)
TEMP.
RANGE(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL22512WFB8Z* (Note 1)
22512 WFBZ
10
-40 to +125
8 Ld SOIC
M8.15
ISL22512WFRU10Z-TK (Note 2) GE
10
-40 to +125
10 Ld µTQFN
L10.2.1x1.6A
Tape and Reel
*Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
NOTE:
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. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu
plate - e4 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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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