10

10 - 208

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

GaAs MMIC SP4T NON-REFLECTIVE

POSITIVE CONTROL SWITCH, DC* - 8 GHz

v04.0805

General Description

Features

Functional Diagram

The HMC345LP3 & HMC345LP3E are broadband

non-reflective GaAs MESFET SP4T switches in low

cost leadless surface mount packages. Covering DC

to 8 GHz, this switch offers high isolation and low

insertion loss. This switch also includes an on board

binary decoder circuit which reduces the required

logic control lines to two. The switch operates using a

positive control voltage of 0/+5V, and requires a fixed

bias of +5V.

Broadband Performance: DC - 8 GHz

High Isolation: 35 dB@ 6 GHz

Low Insertion Loss: 2.2 dB@ 6 GHz

Integrated Positive Supply 2:4 TTL Decoder

3 x 3 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

* Blocking capacitors are required at ports RFC and RF1,

2, 3, & 4. Their value will determine the lowest transmission

frequency.

Parameter

Frequency

Min.

Typ.

Max.

Units

Insertion Loss

DC - 2.0 GHz

DC - 6.0 GHz

DC - 8.0 GHz

2.0

2.2

2.4

2.4

2.6

2.9

dB

dB

dB

Isolation

DC - 2.0 GHz

DC - 4.0 GHz

DC - 6.0 GHz

DC - 8.0 GHz

37

32

31

27

42

37

35

32

dB

dB

dB

dB

Return Loss

“On State”

DC - 2.0 GHz

DC - 4.0 GHz

DC - 6.0 GHz

DC - 8.0 GHz

10

8

7

6

13

11

10

9

dB

dB

dB

dB

Return Loss (RF1 - RF4)

“Off State”

2.0 - 8.0 GHz

6

10

dB

Input Power for 1 dB Compression

2.0 - 8.0 GHz

17

21

dBm

Input Third Order Intercept

(Two-Tone Input Power = +7 dBm Each Tone, 1MHz Tone Separation)

2.0 - 8.0 GHz

37

45

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

DC - 8.0 GHz

50

120

ns

ns