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Accurate wideband connectorised digital attenuator module

20th March 2007

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New from RF and microwave component specialist Link Microtek is a GaAs MMIC-based connectorised digital attenuator module that provides excellent accuracy over its wide bandwidth of DC to 13GHz. Manufactured by Hittite Microwave Corporation, the HMC-C025 is a 6-bit digital attenuator with bit values of 0.5 (LSB), 1, 2, 4, 8 and 16dB, providing a total attenuation of 31.5dB. The device has a typical attenuation accuracy of +/-0.3dB, a typical insertion loss of 4dB and an input IP3 of +38dBm.

The HMC-C025 utilises removable SMA connectors to deliver maximum design flexibility. With the connectors in place, the device can be mated with standard coaxial cable assemblies. Alternatively, the SMA connectors can be quickly detached to allow direct connection of the I/O pins to a microstrip or grounded coplanar PCB.

Housed in a hermetically sealed module, the HMC-C025 attenuator has an operating temperature range of -55 to +85degC and is particularly suitable for applications in military radio, radar, ECM and space systems.

A datasheet for the Hittite HMC-C025 digital attenuator module can be found at www.linkmicrotek.com under the product category ‘Attenuators – Digital Control’.