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ISL23512 Datasheet, PDF (2/9 Pages) Intersil Corporation – Low Noise, Low Power, 16 Taps, Push Button Controlled Potentiometer
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ISL23512
Pin Descriptions
µTQFN
PIN
1
2
3
4
6
7
5, 8, 10
9
SYMBOL
BRIEF DESCRIPTION
PU The PU is a negative-edge triggered input with internal pull-up. Toggling PU will move the wiper close to RH terminal.
PD The PD is a negative-edge triggered input with internal pull-up. Toggling PD will move the wiper close to RL terminal.
RH
The RH and RL pins of the ISL23512 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum
voltage is Vss and the maximum is Vcc. The terminology of RH and RL references the relative position of the terminal in
relation to wiper movement direction selected by the PU/PD input.
VSS Ground
RW The RW pin is the wiper terminal of the potentiometer, which is equivalent to the movable terminal of a mechanical
potentiometer.
RL
The RH and RL pins of the ISL23512 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum
voltage is Vss and the maximum is Vcc. The terminology of RH and RL references the relative position of the terminal in
relation to wiper movement direction selected by the PU/PD input.
NC No connection.
VCC Supply Voltage.
Block Diagrams
VCC (SUPPLY VOLTAGE)
PU
CONTROL
PD
BLOCK
PU
PD
RH
RW
RL
VSS (GROUND)
4-BIT
UP/DOWN
COUNTER
15
14
13
12
ONE
OF
SIXTEEN
DECODER
2
1
0
RH
TRANSFER RESISTOR
RW
GATES
ARRAY
GENERAL
RL
DETAILED
2
FN6590.1
January 21, 2008
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