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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

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The HMC276LP4 switch can operate as a 4x4 switch by

connecting the 4 inputs of two switches directly together.

The VL, VH, HL, and HH inputs of the first switch should be

connected to the second switch, as illustrated.

Mirror image switch performance can be realized by invert-

ing the HV1 & HV2 logic control signals of one of the

HMC276LP4 switches.

The input loading impedance of two switches in parallel

should be 31.25 ohms. The output loading impedance on

each output should be 75 ohms. The interconnect RF line

between the switch’s inputs should be an RF trace with a

characteristic impedance of 62.5 ohms. This will allow the

switch to remain matched in all possible switch states.

The HMC276LP4 does not provide output to output (OP1

to OP2) isolation. For this reason, it is recommended that

external amplifiers should be used at each output. The

amplifier’s reverse isolation will provide output to output isolation, if this is necessary.

Each HMC276LP4 requires DC blocking capacitors on ALL RF input and output ports.

Switch Application Circuit for 4x4 Switch Matrix

HMC276LP4 / 276LP4E

v01.0409

GaAs MMIC 4x2 SWITCH

MATRIX, 0.2 - 3.0 GHz