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Figure 2. Package Type

RFC

RF1

RF2

C1

75

75

75

C2

CMOS

Control

Driver

The SP4280 is an CMOS Switch designed for CATV

applications, covering a broad frequency range from DC up to

2.2 GHz. This single-supply SPDT switch integrates a two-pin

CMOS control interface. It also provides low insertion loss with

extremely low bias requirements while operating on a single 3 V

supply. In a typical CATV application, the SP4280 provides for

a cost effective and manufacturable solution when compared to

mechanical relays.

The SP4280 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

75

SPDT CATV CMOS

Switch 5 MHz - 2.2 GHz

Product Description

Figure 1. Functional Diagram

SP4280

Features

characteristic impedance

terminations

5 MHz, 1.1 dB at 1 GHz

)

Parameter

Condition

Minimum

Typical

Maximum

Units

5

2200

MHz

Insertion Loss

5 MHz – 250 MHz

250 MHz – 750 MHz

750 MHz – 1000 MHz

1000 MHz – 2200 MHz

0.5

0.8

0.9

1.1

0.6

0.95

1.1

1.3

dB

Isolation

5 MHz – 250 MHz

250 MHz – 750 MHz

750 MHz – 1000 MHz

1000 MHz – 2200 MHz

67

60

57

44

72

65

60

47

dB

5 MHz - 1000 MHz

75

dBm

5 MHz - 1000 MHz

50

50

dBm

1000 MHz

29

26

dBm

CTB / CSO

77 & 110 channels;

Power Out = 44 dBmV

-85

dBc

Switching Time

50% CTRL to 10/90 RF

2

µs

5 MHz - 1000 MHz

15

Notes:

1. Device linearity will begin to degrade below 5 MHz.

2. Measured in a 50

system.

3. Measured with a 1 ns risetime, 0/3 V pulse and 500 MHz bandwidth

20-lead 4x4 mm QFN

Tel: +86-23-62808818

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com