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4x4 mm 20-lead QFN

The SP42742 is an SPDT CMOS Switch designed for

Broadband applications such as CATV, DTV, Multi-Tuner

DVR (Digital Video Recorder), Set-top Box, PCTV and Game

Boxes. It meets FCC 15.115 spec of 80 dB isolation @ 216

MHz and offers high isolation and low insertion loss in both a

powered and a unique unpowered default state. The

SP42742 covers a broad frequency range from 5 MHz to

beyond 2200 MHz with a single positive supply and CMOS

control. It provides a smaller, cost effective, more reliable

and manufacturable alternative to mechanical relays in set-

top box applications.

The SP42742 is manufactured on SIPAT’s CMOS

process, a patented variation of silicon-on-insulator (SOI)

technology on a sapphire substrate, offering the performance

of GaAs with the economy and integration of conventional

CMOS.

Product Specification

Product Description

Figure 1. Functional Diagram

SP42742

Features

isolation @ 216 MHz

5 MHz, 0.8 dB at 1000 MHz

select

75

Terminated, 5 - 2200 MHz SPDT

CATV CMOS Switch

Featuring Unpowered Operation

Figure 2. Package Type

RF1

RF2

75Ω

75Ω

CMOS

Control

Driver

ESD

ESD

RFC

C1

C2

Tel: +86-23-62808818

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com