27–31 GHz GaAs MMIC Driver Amplifier AA028P2-00 Chip Outline 0.450 ■ Single Bias Supply Operation (6 V) ■ 14 dB Typical Small Signal Gain ■ 16 dBm Typical P1 dB Output Power at 28 GHz 1.313 Features 1.380 ■ 0.25 µm Ti/Pd/Au Gates 0.000 0.000 ■ 100% Visual Inspection to MIL-STD-883 MT 2010 0.617 Description Alpha’s two-stage reactively-matched 27–31 GHz GaAs MMIC driver amplifier has typical small signal gain of 14 dB with a typical P1 dB of 16 dBm at 28 GHz. The chip uses Alpha’s 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. Designed for 27–31 GHz LMDS and digital radio bands. 2.180 ■ 100% On-Wafer RF and DC Testing Dimensions indicated in mm. All DC (V) pads are 0.1 x 0.1 mm and RF In, Out pads are 0.07 mm wide. Chip thickness = 0.1 mm. Absolute Maximum Ratings Characteristic Value Operating Temperature (TC) -55°C to +90°C Storage Temperature (TST) -65°C to +150°C Bias Voltage (VD) 7 VDC Power In (PIN) 16 dBm Junction Temperature (TJ) 175°C Electrical Specifications at 25°C (VDS = 6 V) Parameter Condition Drain Current Symbol Min. IDS Small Signal Gain F = 27–31 GHz G Input Return Loss F = 27–31 GHz RLI Output Return Loss F = 27–31 GHz RLO Output Power at 1 dB Gain Compression F = 28 GHz P1 dB 13 Saturated Output Power F = 28 GHz PSAT 14 ΘJC Thermal Resistance1 12 Typ.2 Max. Unit 80 110 mA -11 -6 dB -12 -6 14 16 dB dB dBm 17 dBm 198 °C/W 1. Calculated value based on measurement of discrete FET. 2. Typical represents the median parameter value across the specified frequency range for the median chip. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 12/99A 1 27–31 GHz GaAs MMIC Driver Amplifier AA028P2-00 Typical Performance Data 20 Circuit Schematic S21 10 (dB) 0 S11 -10 S22 -20 -30 Detail A S12 V -40 26 28 30 32 Frequency (GHz) Typical Small Signal Performance S-Parameters (VDS = 6 V) RF IN See Detail A Bias Arrangement 6V RF IN .01 µF 50 pF RF OUT For biasing on, adjust VDS from zero to the desired value (6 V recommended). For biasing off, reverse the biasing on procedure. 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 12/99A RF OUT