24–31 GHz GaAs MMIC High Isolation SPDT Reflective PIN Switch AP640R6-00 0.113 ■ Low Loss, < 1.2 dB ■ High Isolation, > 34 dB 2.078 Chip Outline Features 1.100 ■ Return Loss, < -12 dB 0.988 ■ Fast Switching Speed, < 4 ns ■ High Power Handling, 37 dBm Peak, 33 dBm CW 0.398 2.190 2.095 1.095 Alpha’s high isolation, single pole, double throw PIN diode switch is a robust, high performance switch. It is ideal for low loss, high isolation applications, particularly where 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 in each arm and an on-chip bias network. Chips are measured on a 100% basis at 24, 28, and 30 GHz for insertion loss, isolation, input and output return losses, and also at DC for diode breakdown voltage and turn on voltage. 0.000 Description 0.095 0.000 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 Condition Min. Typ.2 Max. 1 1.2 Unit IL F = 24, 28, 31 GHz ISO F = 24, 28, 31 GHz Input Return Loss RLI F = 24, 28, 31 GHz 20 15 Output Return Loss (Insertion State) RLO F = 24, 28, 31 GHz 15 12 dB Leakage Current IDD V = -50 V 2 20 µA Isolation Switching Speed1 Output Power at 1 dB Compression1 P1 dB F = 35 GHz 34 37 dB dB 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. 2/00A 1 24–31 GHz GaAs MMIC High Isolation SPDT Reflective PIN Switch AP640R6-00 Typical Performance Data -1 Output Return Loss -20 -2 Input Return Loss -30 -3 Isolation -4 15 20 25 30 35 0 Insertion Loss -10 -1 Output Return Loss -20 -2 Input Return Loss -30 -3 Isolation -40 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, Forward Current = 20 mA 0 Truth Table 0 Insertion Loss -1 Output Return Loss -20 -2 Input Return Loss -30 -3 Isolation -40 Insertion Loss (dB) -10 Insertion Loss (dB) -10 -40 Return Loss & Isolation (dB) 0 Return Loss & Isolation (dB) 0 Insertion Loss Insertion Loss (dB) Return Loss & Isolation (dB) 0 B1 B2 J1–J2 +20 mA -5 V Insertion Loss -5 V +20 mA Isolation Circuit Schematic B1 B2 -4 1 2 5 10 20 40 Forward Current (mA) Performance vs. DC Bias F = 28 GHz, Reverse Voltage = -3.5 V J3 J2 Bias Arrangement J1 “OFF ARM” +20 mA (~ 1.25 V) “ON ARM” -5 V (~ 2 µA) RESISTOR RESISTOR B1 B2 J2 J3 J1 2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 2/00A