General Description

Built for X-band, SAC3403 is a 6-bit GaAs MMIC digital attenuator die covering 8 to 12 GHz. It sets 0.5 to 31.5 dB of attenuation in 0.5 dB steps, with 3.8 dB insertion loss and 0.5 dB RMS accuracy.

Bits are weighted 0.5, 1, 2, 4, 8 and 16 dB and switched with TTL 0/+5 V control. VSWR is 1.3 on each port. The fully passivated die measures 1.79 x 1.25 x 0.1 mm and is rated to +23 dBm input, so it covers gain setting in X-band radar, EW and SATCOM channels.