Switch and attenuator suit broadband comms
A MRC Components product story
Edited by the Electronicstalk editorial team May 5, 2005
New surface-mount SPDT switches and voltage variable attenuators are ideal for fibre optic, wideband telecomms, test and measurement, microwave radio and military applications from DC to 20.0GHz.
A new broadband SMT packaged GaAs MMIC SPDT switch and an SMT packaged GaAs MMIC voltage variable attenuator are ideal for fibre optic, wideband telecomms, test and measurement, microwave radio and military applications from DC to 20.0GHz.
The Hittite Microwave HMC547LP3 is a GaAs MMIC nonreflective SPDT switch in a low cost leadless QFN 3 x 3mm surface mount package.
Operating from DC to 20GHz, this switch offers isolation as high as 50dB and insertion loss as low as 1.5dB.
The HMC547LP3 is controlled by two complementary negative voltage logic lines and requires no DC bias supply.
High input IP3 of +48dBm and fast switching speed of 6ns allow this switch to be used in numerous applications.
A RoHS compliant version of the switch is available as the HMC547LP3E.
The HMC346LC3B is an absorptive GaAs MMIC voltage-variable attenuator in a "Pb free" RoHS compliant 3 x 3mm leadless surface mount package, and is rated from DC to 18GHz.
With up to 30dB of attenuation range, this VVA is matched to 50ohm at all attenuation levels, and offers a low phase-shift/attenuation characteristic.
The on-chip reference attenuator is designed to be used with an external op amp for applications where a single control voltage of 0 to -3V is desired.
Samples of these wideband control devices and evaluation PC boards are available from MRC Components.
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