SP4273 Datasheet, PDF (3/10 Pages) SIPAT Co,Ltd – SPDT Broadband COMS

SP4273
Product Specification
Table 5. Single-pin Control Logic Truth Table
Control Voltages
Signal Path
Pin 6 (V2) = VDD
Pin 4 (V1) = High
RFC to RF1
Pin 6 (V2) = VDD
Pin 4 (V1) = Low
RFC to RF2
Table 6. Complementary-pin Control Logic
Truth Table
Control Voltages
Signal Path
Pin 6 (V2) = Low
Pin 4 (V1) = High
RFC to RF1
Pin 6 (V2) = High
Pin 4 (V1) = Low
RFC to RF2
Control Logic Input
The SP4273 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 (pin 6).
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 V1 and V2 (pins 4 & 6), that can be directly
driven by +3-volt CMOS logic or a suitable
µProcessor I/O port. This enables the SP4273 to
operate in positive control voltage mode within the
SP4273 operating limits.
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