4

4 - 20

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

Parameter

Frequency

Min.

Typ.

Max.

Units

Insertion Loss

DC - 6.0 GHz

DC - 8.0 GHz

1.8

1.9

2.1

2.2

dB

dB

Isolation

DC - 2.0 GHz

DC - 4.0 GHz

DC - 6.0 GHz

DC - 8.0 GHz

44

37

34

30

49

42

39

35

dB

dB

dB

dB

Return Loss

“On State”

DC - 2.0 GHz

DC - 8.0 GHz

10

7

14

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

17

21

dBm

Input Third Order Intercept

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

0.5 - 8.0 GHz

37

40

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

DC - 8.0 GHz

35

150

ns

ns

HMC344

General Description

Features

Functional Diagram

The HMC344 is a broadband non-reflective GaAs

MESFET SP4T switch chip. Covering DC to 8 GHz,

this switch offers high isolation, low insertion loss,

and a compact form factor. This switch also includes

an on board binary decoder circuit which reduces

the number of required logic control lines to two. The

switch operates using a negative control voltage of

0/-5V, and requires a fixed bias of -5V. All data is tested

with the chip in a 50 Ohm test fixture connected via

0.025 mm (1 mil) diameter wire bonds of minimal length

0.31 mm (12 mils). This SP4T switch is also available

in SMT packaged form as the HMC344LC3.

Broadband Performance: DC - 8 GHz

Non-Reflective Topology

Low Insertion Loss: 1.8 dB @ 6 GHz

Integrated 2:4 TTL Decoder

Small Size: 1.08 x 1.05 x 0.10 mm

Typical Applications

The HMC344 is ideal for:

• Telecom Infrastructure

• Microwave Radio & VSAT

• Military & Space

• Test Instrumentation

GaAs MMIC SP4T NON-REFLECTIVE

SWITCH, DC - 8 GHz

v06.0709