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PE4272-EK Datasheet(PDF) 3 Page - Peregrine Semiconductor Corp. |
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PE4272-EK Datasheet(HTML) 3 Page - Peregrine Semiconductor Corp. |
3 / 11 page Product Specification PE4272 ©2005 Peregrine Semiconductor Corp. All rights reserved. Document No. 70-0173-03 │ www.psemi.com Page 3 of 11 Control Voltages Signal Path Pin 1 (VDD) = VDD Pin 2 (CTRL) = High RFC to RF1 Pin 1 (VDD) = VDD Pin 2 (CTRL) = Low RFC to RF2 Table 5. Single-pin Control Logic Truth Table Table 6. Complementary-pin Control Logic Truth Table Control Voltages Signal Path Pin 1 (VDD) = Low Pin 2 (CTRL) = High RFC to RF1 Pin 1 (VDD) = High Pin 2 (CTRL) = Low RFC to RF2 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 VDD (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. |
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