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Fabricante

SA58643

Single-Pole Double-Throw (SPDT) switch

Philips Electronics 

SA58643

Single-Pole Double-Throw (SPDT) switch

Rev. 01 — 20 November 2006

Product data sheet

1. General description

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 consumption makes the SA58643 ideal for portable

applications. The excellent isolation and low loss makes this a suitable replacement for

PIN diodes.

The SA58643 is available in an 8-pin TSSOP package.

2. 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

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