SA58643 - NXP

SA58643 Single Pole Double Throw SPDT Switch

The SA58643 is a wideband RF switch fabricated in BiCMOS technology and incorporating on-chip CMOS/TTL compatible drivers. Its primary function is to switch signals in the frequency range DC to 1 GHz from one 50 Ω channel to another. The switch is activated by a CMOS/TTL compatible signal applied to the enable channel 1 pin (ENCH1). The extremely low current.

Features

I Wideband (DC to 1 GHz) I Low through loss (1 dB typical at 200 MHz) I Unused input is terminated internally in 50 Ω I Excellent overload capability (1 dB gain compression point +18 dBm at 300 MHz) I Low DC power (170 µA from 5 V supply) I Fast switching (20 ns typical) I Good isolation (off channel isolation 60 dB at 100 MHz) I Low distortion (IP3 intercept +33 dBm) I Good 50 Ω match (return loss 18 dB at 400 MHz) I Full ESD protection I Bidirectional operation 3. Applications I Digital transceiver front-end switch I Antenna switch I Filter selection I Video switch I FSK transmitter NXP Sem.