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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

GaAs MMIC SPDT NON-REFLECTIVE

CATV SWITCH, DC - 2.5 GHz

v05.0805

General Description

Features

Functional Diagram

The HMC348LP3 & HMC348LP3E are non-reflective

GaAs MESFET SPDT switches in low cost leadless

QFN surface mount plastic packages ideal for CATV

applications. Covering DC to 2.5 GHz, the switch offers

high isolation, low insertion loss, integrated 75 Ohm

terminations and an “all off” state. The switch features

>80 dB isolation at 5 MHz and >55 dB isolation up to

1 GHz. The switch operates using complementary

positive control voltage logic lines of +5/0V and

requires a +5V bias supply (Vdd). This switch offers

excellent performance in both 50 Ohm & 75 Ohm

systems for either SPDT or SPST functions.

High Isolation: >80 dB @ 5 MHz (50 Ohm)

>55 dB @ 1 GHz (50 Ohm)

“All Off” Isolation State

Non-Reflective Design, 75 Ohm Terminations

3x3 mm SMT Package

Typical Applications

The HMC348LP3 / HMC348LP3E is ideal for:

• 75 Ohm Systems

CATV Signal Distribution, Cable Modem

Headend & DBS IF Switching

• 50 Ohm Systems

Basestation Infrastructure & Test Equipment

Parameter

Frequency

Min.

Typ.

Max.

Units

Insertion Loss

DC - 1000 MHz

DC - 2500 MHz

0.6

0.7

0.9

1.0

dB

dB

Isolation

DC - 250 MHz

DC - 750 MHz

DC - 1000 MHz

DC - 2000 MHz

DC - 2500 MHz

63

53

50

47

45

68

58

55

52

50

dB

dB

dB

dB

dB

Return Loss

“On State”

DC - 2500 MHz

15

20

dB

Return Loss RF1, RF2

“Off State”

DC - 1000 MHz

DC - 2500 MHz

9

8

12

11

dB

dB

Input Power for 1 dB Compression

50 MHz

1000 MHz

20

25

23

28

dBm

dBm

Input Third Order Intercept

(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)

50 MHz

1000 MHz

2500 MHz

43

48

51

dBm

dBm

dBm

Input Second Order Intercept

(Two-Tone Input Power= 0 dBm Each Tone, 6 MHz Tone Separation)

50 MHz

1000 MHz

2500 MHz

72

89

80

dBm

dBm

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

DC - 2500 MHz

25

600

ns

ns