SWITCHES - SMT
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
HMC345LP3 / 345LP3E
GaAs MMIC SP4T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8 GHz
v04.0805
General Description
Features
Functional Diagram
The HMC345LP3 & HMC345LP3E are broadband
non-re ective 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 xed
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
Electrical Speci cations, T
A
= +25° C, With 0/+5V Control, 50 Ohm System
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
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
