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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

HIGH ISOLATION SPDT

NON-REFLECTIVE SWITCH, DC - 4 GHz

v02.0607

General Description

Features

Functional Diagram

High Isolation: 70 dB @ 1 GHz

57 dB @ 2 GHz

Single Positive Control: 0/+5V

+52 dBm Input IP3

Non-Reflective Design

All Off State

Included in the HMC-DK005 Designer’s Kit

Typical Applications

The HMC349MS8G / HMC349MS8GE is ideal for:

• Basestation Infrastructure

• MMDS & 3.5 GHz WLL

• CATV/CMTS

• Test Instrumentation

The HMC349MS8G & HMC349MS8GE are high

isolation non-reflective DC to 4 GHz GaAs MESFET

SPDT switches in low cost 8 lead MSOP8G surface

mount packages with exposed ground paddles.

The switch is ideal for cellular/PCS/3G basestation

applications yielding 50 to 60 dB isolation, low

0.8 dB insertion loss and +52 dBm input IP3. Power

handling is excellent up through the 3.5 GHz WLL

band with the switch offering a P1dB compression

point of +31 dBm. On-chip circuitry allows a single

positive voltage control of 0/+5 Volts at very low DC

currents. An enable input (EN) set to logic high will

put the switch in an “all off” state.

0/+5 Vdc, Vdd = +5 Vdc, 50 Ohm System

Parameter

Frequency

Min.

Typ.

Max.

Units

Insertion Loss

DC - 1.0 GHz

DC - 2.0 GHz

DC - 3.0 GHz

DC - 4.0 GHz

0.8

0.9

1.2

1.8

1.1

1.2

1.5

2.1

dB

dB

dB

dB

Isolation (RFC to RF1/RF2)

DC - 1.0 GHz

DC - 2.0 GHz

DC - 3.0 GHz

DC - 4.0 GHz

60

54

45

42

70

57

50

47

dB

dB

dB

dB

Return Loss (On State)

DC - 1.0 GHz

DC - 2.0 GHz

DC - 3.0 GHz

DC - 4.0 GHz

23

18

13

8

dB

dB

dB

dB

Return Loss (Off State)

0.5 - 2.0 GHz

0.5 - 3.0 GHz

0.5 - 4.0 GHz

20

17

14

dB

dB

dB

Input Power for 1 dB Compression

0.25 - 4.0 GHz

27

31

dBm

Input Third Order Intercept

(Two-Tone Input Power = +7 dBm Each Tone)

0.25 - 1.0 GHz

1.0 - 2.0 GHz

2.0 - 3.0 GHz

3.0 - 4.0 GHz

53

50

49

47

dBm

dBm

dBm

dBm

Switching Speed

DC - 4.0 GHz

tRISE, tFALL (10/90% RF)

tON, tOFF (50% CTL to 10/90% RF)

40

120

ns

ns