SWITCHES - SMT
10
10 - 172
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
HMC321LP4 / 321LP4E
GaAs MMIC SP8T NON-REFLECTIVE
POSITIVE CONTROL SWITCH, DC* - 8 GHz
v03.0805
General Description
Features
Functional Diagram
The HMC321LP4 & HMC321LP4E are broadband non-
re ective GaAs MESFET SP8T switches in low cost
leadless surface mount packages. Covering DC to
8 GHz, this switch offers high isolation and low inser-
tion loss. This switch also includes an on board binary
decoder circuit which reduces the required logic con-
trol lines to three. The switch operates using a positive
control voltage of 0/+5 volts, and requires a xed bias
of +5v. This switch is suitable for usage in 50-Ohm or
75-Ohm systems.
Broadband Performance: DC - 8 GHz
High Isolation: >30 dB@ 6 GHz
Low Insertion Loss: 2.5 dB@ 6 GHz
Integrated Positve Supply 3:8 TTL Decoder
4x4 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
* DC blocking capacitors are required at ports RFC and
RF1, 2, 3, 4, 5, 6, 7, 8. Their value will determine the lowest
transmission frequency.
Parameter Frequency Min. Typ. Max. Units
Insertion Loss
DC - 2.0 GHz
DC - 4.0 GHz
DC - 8.0 GHz
2.3
2.5
2.7
2.7
2.9
3.1
dB
dB
dB
Isolation
DC - 2.0 GHz
DC - 4.0 GHz
DC - 6.0 GHz
DC - 8.0 GHz
35
30
25
20
40
35
30
25
dB
dB
dB
dB
Return Loss “On State”
DC - 4.0 GHz
DC - 8.0 GHz
8
7
12
10
dB
dB
Return Loss (RF1 - RF8) “Off State” 2.0 - 8.0 GHz 7 12 dB
Input Power for 1 dB Compression 0.5 - 8.0 GHz 19 23 dBm
Input Third Order Intercept
(Two-tone Input Power = +7 dBm Each Tone, 1 MHz Spacing)
0.5 - 8.0 GHz 33 40 dBm
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 8.0 GHz
50
150
ns
ns
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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
