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

Order On-line at www.hittite.com

GaAs MMIC SP8T NON-REFLECTIVE

SWITCH, DC - 8.0 GHz

v05.1205

General Description

Features

Functional Diagram

The HMC322LP4 & HMC322LP4E are broadband

non-reflective GaAs MESFET SP8T switches in low

cost leadless surface mount packages. Covering DC

to 8 GHz, this switch offers high isolation and low inser-

tion loss. This switch also includes an on board binary

decoder circuit which reduces the required logic

control lines to three. The switch operates using a

negative control voltage of 0/-5 volts, and requires a

fixed bias of -5v. This switch is suitable for usage in

50-Ohm or 75-Ohm systems.

Broadband Performance: DC - 8.0 GHz

High Isolation: >30 dB@ 6 GHz

Low Insertion Loss: 2.4 dB@ 6 GHz

Integrated 3:8 TTL Decoder

4x4 mm SMT Package

Typical Applications

This switch is suitable for usage in DC - 8.0 GHz 50-

Ohm or 75-Ohm systems:

• Broadband

• Fiber Optics

• Switched Filter Banks

• Wireless below 8 GHz

Parameter

Frequency

Min.

Typ.

Max.

Units

Insertion Loss

DC - 2.0 GHz

DC - 4.0 GHz

DC - 8.0 GHz

2.1

2.3

2.5

2.5

2.7

2.9

dB

dB

dB

Isolation

DC - 2.0 GHz

DC - 4.0 GHz

DC - 6.0 GHz

DC - 8.0 GHz

35

30

25

20

40

35

30

25

dB

dB

dB

dB

Return Loss

“On State”

DC - 2.0 GHz

DC - 8.0 GHz

9

6

12

10

dB

dB

Return Loss

“Off State”

DC - 8.0 GHz

7

10

dB

Input Power for 1 dB Compression

0.5 - 8.0 GHz

19

23

dBm

Input Third Order Intercept

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

0.5 - 8.0 GHz

36

40

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

DC - 8.0 GHz

50

150

ns

ns