Directional Detector DD01-92 Features ■ Frequency Coverage: 650 MHz to 2.5 GHz ■ Small Outline SC-88 (6 Lead SC-70) Package ■ Built-in Temperature Compensating Diode ■ Low Cost for High Volume Handset Applications ■ Tape and Reel Availability Description Pin Out DC Bias/AC GND 4 3 RF In 5 2 Temp Comp Out 6 DC Bias/AC GND DD1 RF Out 1 The DD01-92 directional detector is an integrated directional coupler, Schottky diode combination designed for handset power monitor applications specified from 800 MHz to 2 GHz. It is packaged in the small footprint, SC-88 (6 lead SC-70) package. The DD01-92 incorporates a directional coupler and two GaAs Schottky diodes on a monolithic GaAs chip. By applying forward DC bias to both Schottky diodes, the DD01-92 may be conveniently temperature compensated. The DD01-92 is characterized from 650 MHz to 2.5 GHz and generates a detected signal at 1.8 GHz of approximately 200 mV at 10 mW input power. Each Schottky diode is forward biased to approximately 5 µA by applying 1 V through 100 kΩ resistors as shown in the test circuit. Detected Out Electrical Specifications at 25°C Frequency Min. Typ. Detected Voltage Parameter 0.8–1.2 GHz 1.8–2.0 GHz 80 150 120 200 Insertion Loss 870–920 MHz 1.7–1.8 GHz Input Return Loss Output Return Loss Unit mV mV 0.30 0.55 dB dB 0.8–1.2 GHz 1.2–2.0 GHz 20 15 dB dB 0.8–1.2 GHz 1.2–2.0 GHz 20 15 dB dB 200 µV Directivity 0.8–2.0 GHz Schottky Noise Voltage (1 MHz Bandwidth) RF Power Off 0.25 0.50 Max. 10 dB Schottky Diode DC Voltage RF Power Off 480 mV DC Offset Voltage RF Power Off 10 mV Video Resistance RF Power Off 7,500 Ω Conditions: 10 dBm input power, 1 V applied to test circuit. Detected voltage is differential voltage, V4–V3, on test circuit. Insertion loss at 870–920 MHz shall be less than 0.4 dB at 85°C. Insertion loss at 1.7–1.8 GHz shall be less than 0.6 dB at 85°C. Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 1 Directional Detector DD01-92 Typical Performance Data 0.8 Detected Voltage (V) 0.7 0.6 0.5 15 dBm 0.4 0.3 10 dBm 0.2 5 dBm 0.1 -5 0 5 10 15 Frequency (GHz) Differential Detected Voltage vs. Frequency Differential Detected Voltage vs. Input Power 0 -10 -20 -30 Input Return Loss -0.8 -40 -1.0 -50 Output Return Loss -1.2 0.5 1.0 1.5 2.0 Return Loss (dB) -0.4 -0.6 1000 17 dBm Insertion Loss -0.2 -60 2.5 10 dBm 100 10 -40 0 dBm -20 0 20 40 60 80 Frequency (GHz) Temperature (˚C) Insertion Loss and Return Loss Temperature Sensitivity at 1.7 GHz Typical Detected Voltage vs. Temperature 10.000 +85˚C 1.000 Input Power (dBm) +25˚C -40˚C 0.100 VOut @ -40°C (mV) VOut @ +25°C (mV) VOut @ +85°C (mV) 0 74 64 59 10 241 230 226 17 570 550 550 Conditions: 1.7 GHz, 10 dBm input power, 1 V applied to test circuit. Detected voltage is differential voltage, V4–V3, on test circuit. 0.010 0 0.5 1.0 1.5 Forward Voltage (V) Schottky Diode DC Characteristic 2 20 Input Power (dBm) 0 Insertion Loss (dB) 0.010 0.001 -10 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 Forward Current (mA) 1.8 GHz 0.9 GHz 0 0.001 0.100 Detected Voltage (mV) Detected Voltage (V) 1.000 20 dBm Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A Directional Detector DD01-92 SC-88 (6 Lead SC-70) Absolute Maximum Ratings Characteristic 0.079 (2.00 mm) ± 0.008 (0.20 mm) 0.0256 (0.65 mm) BSC 0.087 (2.20 mm) ± 0.008 (0.20 mm) 0.049 (1.25 mm) ± 0.004 (0.10 mm) Value Incident Power (CW) @ SWR = 2.0 Max. 4 W @ < 1 GHz 2 W @ 1–2.5 GHz DC Bias Current 10 mA Operating Temperature -40 to +85°C Storage Temperature -65 to +150°C 0.009 (0.23 mm) REF PIN 1 INDICATOR 0.035 (0.90 mm) ± 0.004 (0.10 mm) 0.010 (0.25 mm) ± 0.006 (0.15 mm) 0.0055 (0.14 mm) ± 0.0015 (0.04 mm) 0.002 (0.005 mm) ± 0.002 (0.005 mm) 0.037 (0.95 mm) ± 0.006 (0.15 mm) Test Circuit RF In RF In 100 kΩ 0.008 (0.20 mm) ± 0.004 (0.10 mm) 6 5 4 1 2 3 100 pF Detected Output Evaluation Board Layout 100 k RF In RF Out SK38908 DD0*-92 15 pF Detect Out 100 pF RF Out Direct 100 pF RF Out Bias In 22 nH 100 k 1V Bias + – 100 kΩ Temperature Compensation Out 100 pF 22 nH 15 pF Temp. Comp. Out Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com Specifications subject to change without notice. 1/01A 3