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| Preliminary PHEMT GaAs IC High Power SP3T Switch DC-2 GHz AS202-321 Features Positive Low Voltage Control (0/2.75 V Operation) Low Insertion Loss (< 0.6 dB @ 2 GHz) High Isolation (30 dB at 1 and 2 GHz) Excellent Harmonics Performance (65 dBc @ 2.75 V 1 GHz PIN = 34 dBm) Miniature MLP-12 Plastic Package PHEMT Process EXPOSED PAD MLP-12 0.118 (3.00 mm) PIN 1 INDICATOR 0.118 (3.00 mm) 0.008 (0.20 mm) SEATING PLANE 0.001 (0.02 mm) 0.030 (0.75 mm) 0.002 (0.05 mm) PIN 1 INDICATOR 0.029 (0.73 mm) Description The AS202-321 is a PHEMT GaAs IC SP3T antenna switch operating in the 900 MHz and 1800 MHz frequency bands. Switching between the antenna and TX/RX ports is accomplished with 3 control inputs. When the control inputs are driven with the appropriate voltages, a low insertion loss path is provided from an antenna port to an RX or TX port, while the other ports have high attenuation. 0.009 (0.23 mm) + 0.003 (0.07 mm) - 0.002 (0.05 mm) 0.0196 (0.50 mm) BSC 0.057 (1.45 mm) SQ. + 0.004 (0.10 mm) - 0.006 (0.15 mm) Electrical Specifications at 25C (0, +2.75 V) Parameter Insertion Loss Ant-RF1, RF2, RF3 Frequency 0.1-0.5 GHz 0.5-1.0 GHz 1.0-2.0 GHz 0.1-0.5 GHz 0.5-1.0 GHz 1.0-2.0 GHz 0.1-0.5 GHz 0.5-1.0 GHz 1.0-2.0 GHz 25 22 22 Min. Typ. 0.55 0.60 0.80 28 25 25 18 18 14 Max. 0.75 0.80 1.10 Unit dB dB dB dB dB dB dB dB dB Isolation Ant-RF1, RF2, RF3 Return Loss Ant-RF1, RF2, RF3 Operating Characteristics at 25C (0, +2.75 V) Parameter 2nd Harmonic 3rd Harmonic 2nd Harmonic 3rd Harmonic Gate Leakage Current Control Voltages Condition 34 dBm In @ 2.75 V 34 dBm In @ 2.75 V 32 dBm In @ 2.75 V 32 dBm In @ 2.75 V 34 dBm In @ 2.75 V VHigh VLow -0.25 2.60 0 2.75 Frequency 1 GHz 1 GHz 2 GHz 2 GHz Min. Typ. 72 65 70 65 0.030 0.25 5.00 Max. Unit dBc dBc dBc dBc mA V V Alpha Industries, Inc. [781] 935-5150 * Fax [978] 241-7906 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 8/01A 1 PHEMT GaAs IC High Power SP3T Switch DC-2 GHz AS202-321 Typical Performance Data (0, +2.75 V, CBL = 47 pF) 2.0 1.6 1.2 0.4 0 -0.4 -0.8 -1.2 -1.6 -2.0 0 0.5 1.0 1.5 2.0 2.5 3.0 Ant-RF2 Ant-RF3 Ant-RF1 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 0 0.5 1.0 1.5 2.0 2.5 3.0 Ant-RF2 Ant-RF3 Ant-RF1 Insertion Loss (dB) Frequency (GHz) Isolation (dB) 0.8 Frequency (GHz) Insertion Loss vs. Frequency 0 90 Isolation vs. Frequency 2nd and 3rd Harmonics (dBc) 80 70 60 50 40 30 20 10 0 2.0 2.5 2nd Harmonic Return Loss (dB) -5 -10 Ant-RF2 -15 Ant-RF3 -20 -25 0 0.5 1.0 1.5 2.0 2.5 3.0 Ant-RF1 3rd Harmonic 3.0 3.5 4.0 4.5 Frequency (GHz) Control Voltage (V) Return Loss vs. Frequency 2nd and 3rd Harmonics vs. Control Voltage Truth Table V1 VHigh VLow VLow V2 VLow VHigh VLow V3 VLow VLow VHigh Ant-RF1 Ins. Loss Isolation Isolation Ant-RF2 Isolation Ins. Loss Isolation Ant-RF3 Isolation Isolation Pin Out CBL GND V1 N/C GND ANT Ins. Loss VLow = 0-0.2 V. VHigh = 2.75-5 V. CBL V3 GND CBL RF1 RF3 GND DC blocks required. CBL = 47 pF for operation >500 MHz. 2 Alpha Industries, Inc. [781] 935-5150 * Fax [978] 241-7906 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 8/01A RF2 CBL V2 |
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