PE42421
Product Specification
Table 5. Single-pin Control Logic Truth Table
Control Voltages
Pin 6 (V
DD
) = V
DD
Pin 4 (CTRL) = High
Pin 6 (V
DD
) = V
DD
Pin 4 (CTRL) = Low
Control Logic Input
The PE42421 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 4) supporting
a +3-volt CMOS logic input, and requires a
dedicated +3-volt power supply connection on pin
6 (V
DD
). This mode of operation reduces the
number of control lines required and simplifies the
switch control interface typically derived from a
CMOS
Processor
I/O port.
Complementary-pin control mode
allows the
switch to operate using complementary control
pins CTRL and CTRL (pins 4 & 6), that can be
directly driven by +3-volt CMOS logic or a suitable
Processor
I/O port. This enables the PE42421 to
be used as a potential alternate source for SPDT
RF switch products used in positive control
voltage mode and operating within the PE42421
operating limits.
Signal Path
RFC to RF2
RFC to RF1
Table 6. Complementary-pin Control Logic
Truth Table
Control Voltages
Pin 6 (CTRL or V
DD
) = Low
Pin 4 (CTRL) = High
Pin 6 (CTRL or V
DD
) = High
Pin 4 (CTRL) = Low
Signal Path
RFC to RF2
RFC to RF1
©2010-2011 Peregrine Semiconductor Corp. All rights reserved.
Page 4 of 9
Document No. 70-0396-02
│
UltraCMOS™ RFIC Solutions
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