AS178-73

Preliminary PHEMT GaAs IC High Linearity Positive Control SPDT Switch DC–2 GHz AS178-73 Features I High Linearity (50 dBm IP3 @ 0.9 GHz) @3V I Low Insertion Loss (0.35 dB @ 0.9 GHz) I Isolation (21 dB @ 0.9 GHz) I +3 V Operation I Ultra Miniature SOT-6 Package I PHEMT Process SOT-6 0.074 (1.90 mm REF.) PIN 6 PIN 1 INDICATOR PIN 1 0.020 (0.51 mm) 0.014 (0.350 mm) 0.057 (1.45 mm) 0.035 (0.90 mm) 0.126 (3.20 mm) 0.087 (2.20 mm) 0.071 (1.80 mm) 0.052 (1.30 mm) 0.037 (0.95 mm) REF. 0.012 (0.30 mm) TYP. 0.014 (0.26 mm) 0.004 (0.10 mm) 5.0˚ ± 1˚ 0.006 (0.15 mm) 0.000 (0.00 mm) 5.0˚ ± 1˚ Description The AS178-73 is a PHEMT GaAs FET IC high linearity SPDT switch in a SOT-6 plastic package. This switch has been designed for use where extremely high linearity, low insertion loss and ultra miniature package size are required. It can be controlled with positive, negative or a combination of both voltages. Some standard implementations include antenna changeover, T/R and 0.122 (3.10 mm) 0.106 (2.70 mm) 0.022 (0.61 mm) 0.004 (0.10 mm) diversity switching over 2 W. The AS178-73 switch can be used in many analog and digital wireless communication systems including cellular, GSM and DECT applications. Electrical Specifications at 25°C (0, +3 V) Parameter1 Insertion Loss3 Frequency2 DC–0.5 GHz DC–1.0 GHz DC–2.0 GHz DC–0.5 GHz DC–1.0 GHz DC–2.0 GHz DC–1.0 GHz DC–2.0 GHz 25 20 14 Min. Typ. 0.45 0.45 0.55 28 23 17 1.2:1 1.3:1 1.4:1 1.8:1 Max. 0.6 0.6 0.7 Unit dB dB dB dB dB dB Isolation ...