PE4272
Product Specification
Table 5. Single-pin Control Logic Truth Table
Control Voltages
Pin 1 (V
DD
) = V
DD
Pin 2 (CTRL) = High
Pin 1 (V
DD
) = V
DD
Pin 2 (CTRL) = Low
Control Logic Input
The PE4272 is a versatile RF CMOS switch that
supports two operating control modes; single-pin
control mode and complementary-pin control
mode.
Single-pin control mode
enables the switch to
operate with a single control pin (pin 2) supporting
a +3-volt CMOS logic input, and requires a
dedicated +3-volt power supply connection (pin 1).
This mode of operation reduces the number of
control lines required and simplifies the switch
control interface typically derived from a CMOS
µProcessor
I/O port.
Complementary-pin control mode
allows the
switch to operate using complementary control
pins CTRL and V
DD
(pins 2 & 1), that can be
directly driven by +3-volt CMOS logic or a suitable
µProcessor
I/O port. This enables the PE4272 to
operate in positive control voltage mode within the
PE4272 operating limits.
Signal Path
RFC to RF1
RFC to RF2
Table 6. Complementary-pin Control Logic
Truth Table
Control Voltages
Pin 1 (V
DD
) = Low
Pin 2 (CTRL) = High
Pin 1 (V
DD
) = High
Pin 2 (CTRL) = Low
Signal Path
RFC to RF1
RFC to RF2
Document No. 70-0173-03
│
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©2005 Peregrine Semiconductor Corp. All rights reserved.
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