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14

HMC345LP3

GaAs MMIC SP4T NON-REFLECTIVE

POSITIVE CONTROL SWITCH, DC* - 8.0 GHz

v03.0604

General Description

Features

Functional Diagram

The HMC345LP3 is a broadband non-reflective

GaAs MESFET SP4T switch in a low cost lead-

less surface mount package. 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 - 8.0 GHz

High Isolation: 35 dB@ 6 GHz

Low Insertion Loss: 2.2 dB@ 6 GHz

Integrated Positive Supply 2:4 TTL Decoder

3 mm x 3 mm x 1 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