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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 HMC276QS24E 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

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

HMC276QS24E 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 HMC276QS24E 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 HMC276QS24E requires DC blocking capacitors on ALL RF input and output ports.

Switch Application Circuit for 4x4 Switch Matrix

HMC276QS24 / 276QS24E

v06.0409

GaAs MMIC 4x2 SWITCH

MATRIX, 0.7 - 3.0 GHz