TGL8784

T R I Q U I N T S E M I C O N D U C T O R , I N C . TGL8784-SCC Analog Attenuator q q q q q q PHOTO ENLARGEMENT 2 to 20 -GHz Frequency Range 2-dB Insertion Loss at Midband 10-dB Input/Output Return Loss 13-dB Variable Attenuation Range Single Polarity Power Supply Required 8784 1,702 x 1,219 x 0,152 mm (0.067 x 0.048 x 0.006 in.) DESCRIPTION The TriQuint TGL8784 -SCC is a monolithic variable attenuator which operates from 2 to 20 -GHz. This analog attenuator can operate from a single +2.5 v olt power supply if used with an external variable voltage divider circuit. Typical RF performance at 10 -GHz is: Insertion Loss 2- dB, Maximum attenuation: 15 - dB at 10 - GHz, input and output return loss: better than 10 - dB. DC blocking capacitors are provided on-chip. The TGL8784-SCC is an absorptive attenuator designed using MESFET technolog y employing a “PI” configuration which reduces bias cur rents and simplifies bias networ ks. The broadband capabilities of this device are versatile in many applications such as telecommunications, military, and space. This device has a space heritage. Bond pad and backside metallization is gold plated for compa tibility with eutectic alloy attachment methods as well as thermocompression and thermosonic wire -bonding processes. The TGL8784 SCC is supplied in chip for m and is readily assembled using automated equipment. Groun d is provided to the circuitr y through vias to the backside metallization. TriQuint Semicon...