Single Bias Supply Operation 13 dB Typical Small Signal Gain 14 dBm Typical P1 dB Output Power at 38 GHz 0.25 µm Ti/Pd/Au Gates 100% On-Wafer RF and DC Testing
Skyworks' two-stage reactively-matched 3740 GHz GaAs MMIC driver amplifier has typical small signal gain 13 dB with a typical of 14 dBm at 38 GHz. The chip uses Skyworks' proven 0.25 µm MESFET technology, and is based upon MBE layers and electron beam lithography for the highest uniformity and repeatability. The FETs employ surface passivation to ensure a rugged, reliable part with through-substrate via holes and gold-based backside metallization to facilitate a conductive epoxy die attach process. All chips are screened for gain, output power and S-parameters prior to shipment for guaranteed performance.
Dimensions indicated in mm. All DC (V) pads are 0.1 mm and RF In, Out pads are 0.07 mm wide. Chip thickness = 0.1 mm.
Characteristic Operating Temperature (TC) Storage Temperature (TST) Bias Voltage (VD) Power In (PIN) Junction Temperature (TJ) Value +150°C 7 VDC 16 dBm 175°C
Parameter Drain Current Small Signal Gain Input Return Loss Output Return Loss Output Power 1 dB Gain Compression Saturated Output Power Two-Tone Output Third-Order Thermal Resistance2
1. Not measured a 100% basis. 2. Calculated value based on measurement of discrete FET. 3. Typical represents the median parameter value across the specified frequency range for the median chip.
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Typical Small Signal Performance S-Parameters (VDS 5 V)
Output Power and Relative Third-Order Intermodulation Products = 38 GHz, VDS 5 V
For biasing on, adjust VDS from zero to the desired value (5 V recommended). For biasing off, reverse the biasing on procedure.