18–40 GHz GaAs MMIC High Isolation SPST Reflective PIN Switch AP640R1-00 Chip Outline Features 0.877 ■ Broad Bandwidth ■ Low Loss, < 1.3 dB 0.670 ■ High Isolation, > 37 dB 0.585 ■ Excellent Return Loss, < -13 dB ■ Fast Switching Speed, 4 ns 0.313 Alpha’s high isolation, single pole, single throw PIN diode switch is a robust, high performance switch. It is ideal for low loss, high isolation applications, particularly where broad bandwidths and high power handling is required. The chip uses Alpha’s proven PIN diode technology, and is based upon MBE layers for the highest uniformity and repeatability. The diodes employ surface passivation to ensure a rugged, reliable part with through-substrate via holes and gold-based backside metallization to facilitate an epoxy die attach process. The GaAs MMIC employs two shunt PIN diodes and an on-chip bias network. Chips are measured on a 100% basis at 24, 28, 31 and 35 GHz for insertion loss, isolation, input and output return losses, and also at DC for diode breakdown voltage and turn on voltage. 1.225 1.150 Description 0.070 0.000 0.000 ■ High Power Handling, 37 dBm Peak, 33 dBm CW Dimensions indicated in mm. All pads are ≥ 0.07 mm wide. Chip thickness = 0.1 mm. Absolute Maximum Ratings Characteristic Value Operating Temperature -55°C to +125°C Storage Temperature -65°C to +150°C DC Reverse Bias -70 V (-20 mA) DC Forward Bias +1.3 V (100 mA) PIN 10 W Electrical Specifications at 25°C Parameter Insertion Loss Symbol IL Isolation ISO Input Return Loss (Insertion State) Output Return Loss (Insertion State) Leakage Current RLI RLO IDD Condition P1 dB Typ.2 Max. Unit F = 18, 21, 24, 28, 31, 35 GHz 1.0 1.3 dB F = 38, 40 GHz 1.3 1.9 dB F = 18, 21, 24, 28, 31, 35 GHz 37 42 dB F = 38, 40 GHz 33 36 dB F = 18, 21 GHz 14 12 F = 24, 28, 31, 35, 38, 40 GHz 24 15 dB F = 18, 21 GHz 14 12 dB F = 24, 28, 31, 35, 38, 40 GHz 22 13 dB 2 20 µA V = -50 V Switching Speed1 Output Power at 1 dB Compression1 Min. F = 35 GHz dB 4 ns 33 dBm 1. Not measured on a 100% basis. 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. 3/00A 1 18–40 GHz GaAs MMIC High Isolation SPST Reflective PIN Switch AP640R1-00 Typical Performance Data 0 Output Return Loss -30 -2 -3 Input Return Loss -40 -4 Isolation -2 -20 Output Return Loss -3 Input Return Loss -50 -5 15 20 25 30 35 -30 40 -4 -26.0 -5.0 -3.5 -1.0 0.0 Frequency (GHz) Reverse Bias Voltage (V) Performance vs. Frequency Bias Conditions: IF = 20 mA, VR = -3.5 V Performance vs. DC Bias F = 28 GHz 0 Truth Table 1.5 Input/Output Return Loss -10 1.2 Forward Voltage -20 0.9 -30 0.6 Isolation -40 0.3 -50 Forward Voltage (V) Return Loss & Isolation (dB) -1 -10 B1 J1–J2 +20 mA Isolation -5 V Insertion Loss Circuit Schematic B1 0.0 0 1 2 5 10 20 40 Forward Current (mA) Performance vs. DC Bias F = 28 GHz J3 J2 Bias Arrangement RESISTOR J1 2 B1 J2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 3/00A Insertion Loss (dB) -1 Return Loss (dB) Insertion Loss -10 -20 0 0 Insertion Loss Insertion Loss (dB) Return Loss & Isolation (dB) 0