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Digital Attenuators

Fri, 09/28/2001 - 9:40am
Alpha Industries introduces the AA107-310 and AA109-310 GaAs IC 5-bit digital Attenuators with serial to parallel silicon drivers housed in leadless 5 × 5 mm plastic packages. Featuring low loss, high attenuator accuracy, and high IP3, the digital attenuators are designed for use in base stations, as well as for wireless data and wireless local loop applications.

The AA107-310 has LSB of 0.5 dB, which allows for gain control up to 15.5 dB. As a result, the AA107-310 allows for tight power control. Covering DC-2.0 GHz, the AA107-310 can be used in IF frequency circuits.

For RF frequencies, Alpha has developed the AA109-310, which covers 0.5 GHz -2.5 GHz. The AA109-310 has 1.0 dB LSB, for total attenuation of 31 dB. The performance of the AA109-310 allows for control of a large power range.

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