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PE4272
Product Specification
Table 5. Single-pin Control Logic Truth Table
Control Logic Input
Control Voltages
Pin 1 (V DD ) = V DD
Pin 2 (CTRL) = High
Pin 1 (V DD ) = V DD
Pin 2 (CTRL) = Low
Signal Path
RFC to RF1
RFC to RF2
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
Table 6. Complementary-pin Control Logic
Truth Table
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 Voltages
Pin 1 (V DD ) = Low
Pin 2 (CTRL) = High
Pin 1 (V DD ) = High
Pin 2 (CTRL) = Low
Document No. 70-0173-03 │ www.psemi.com
Signal Path
RFC to RF1
RFC to RF2
control lines required and simplifies the switch
control interface typically derived from a CMOS
μ Processor 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
μ Processor I/O port. This enables the PE4272 to
operate in positive control voltage mode within the
PE4272 operating limits.
?2005 Peregrine Semiconductor Corp. All rights reserved.
Page 3 of 11
Peregrine products are protected under one or more of the following U.S. Patents: http://patents.psemi.com
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