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CAT5127 Folha de dados(PDF) 2 Page - Catalyst Semiconductor

Nome de Peças. CAT5127
descrição  32-Tap Digitally Programmable Potentiometer (DPP TM)
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Fbricantes  CATALYST [Catalyst Semiconductor]
Página de início  http://www.catalyst-semiconductor.com
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CAT5127 Folha de dados(HTML) 2 Page - Catalyst Semiconductor

 
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CAT5127, CAT5129
Doc. No. 2127 Rev. A
2
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
PIN CONFIGURATION
MSOP/TDFN
CAT5127
INC
¯¯¯
1
8 VCC
U/D
¯
2
7 CS
¯¯
RH
3
6 RL
GND
4
5 NC
TSOT23-6
CAT5129
CS
¯¯
1
6 VCC
GND
2
5 RH
U/D
¯
3
4 INC
¯¯¯
PIN DESCRIPTIONS
DEVICE DESCRIPTION
INC
¯¯¯: Increment Control Input
The INC
¯¯¯ input moves the wiper in the up or down
direction determined by the condition of the U/D
¯ input.
U/D
¯: Up/Down Control Input
The U/D
¯ input controls the direction of the wiper
movement. When in a high state and CS
¯¯ is low, any
high-to-low transition on INC
¯¯¯ will cause the wiper to
move one increment toward the RH terminal. When in
a low state and CS
¯¯ is low, any high-to-low transition
on INC
¯¯¯ will cause the wiper to move one increment
towards the RL terminal.
RH: High End Potentiometer Terminal
RH is the high end terminal of the potentiometer. It is
not required that this terminal be connected to a
potential greater than the RL terminal. Voltage applied
to the RH terminal cannot exceed the supply voltage,
VCC or go below ground, GND.
RL: Low End Potentiometer Terminal (CAT5127 only)
RL is the low end terminal of the potentiometer. It is
not required that this terminal be connected to a
potential less than the RH terminal. Voltage applied to
the RL terminal cannot exceed the supply voltage, VCC
or go below ground, GND. RL and RH are electrically
interchangeable.
CS
¯¯ : Chip Select
The chip select input is used to activate the control
input of the device and is active low. When in a high
state, activity on the INC
¯¯¯ and U/D
¯ inputs will not affect
or change the position of the wiper.
VCC: Supply Input for the device.
Name Function
CAT5127
MSOP/TDFN
CAT5129
SOT23
INC
¯¯¯
Increment Control
1
4
U/D
¯
Up/Down Control
2
3
RH
Potentiometer High
Ti l
3
5
GND Ground
4
2
NC
No Connect
5
-
RL
Potentiometer Low
Ti l
6
-
CS
¯¯
Chip Select
7
1
VCC Supply Voltage
8
6


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