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| Directional Detector DD01-92 Features s Frequency Coverage: 650 MHz to 2.5 GHz s Small Outline SC-88 (6 Lead SC-70) Package s Built-in Temperature Compensating Diode s Low Cost for High Volume Handset Applications s Tape and Reel Availability Description 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 A by applying 1 V through 100 k resistors as shown in the test circuit. Pin Out RF Out DC Bias/AC GND Temp Comp Out RF In DC Bias/AC GND Detected Out 1 6 DD1 2 3 5 4 Electrical Specifications at 25C Parameter Detected Voltage Insertion Loss Input Return Loss Output Return Loss Directivity Schottky Noise Voltage (1 MHz Bandwidth) Schottky Diode DC Voltage DC Offset Voltage Video Resistance 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 85C. Insertion loss at 1.7-1.8 GHz shall be less than 0.6 dB at 85C. Frequency 0.8-1.2 GHz 1.8-2.0 GHz 870-920 MHz 1.7-1.8 GHz 0.8-1.2 GHz 1.2-2.0 GHz 0.8-1.2 GHz 1.2-2.0 GHz 0.8-2.0 GHz RF Power Off RF Power Off RF Power Off RF Power Off Min. 80 150 Typ. 120 200 0.25 0.50 Max. Unit mV mV 0.30 0.55 20 15 20 15 dB dB dB dB dB dB dB V mV mV 10 200 480 10 7,500 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/01A 1 Directional Detector DD01-92 Typical Performance Data 0.8 0.7 20 dBm 1.000 Detected Voltage (V) 0.6 0.5 0.4 0.3 0.2 0.1 0 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 5 dBm 15 dBm Detected Voltage (V) 0.100 1.8 GHz 10 dBm 0.010 0.9 GHz 0.001 -10 -5 0 5 10 15 20 Frequency (GHz) Input Power (dBm) Differential Detected Voltage vs. Frequency 0 -0.2 Insertion Loss 0 -10 1000 Differential Detected Voltage vs. Input Power 17 dBm Detected Voltage (mV) Insertion Loss (dB) Return Loss (dB) -0.4 -0.6 -0.8 -1.0 Output Return Loss -1.2 0.5 1.0 1.5 2.0 Input Return Loss -20 -30 -40 -50 -60 2.5 10 dBm 100 0 dBm 10 -40 -20 0 20 40 60 80 Frequency (GHz) Temperature (C) Insertion Loss and Return Loss 10.000 +85C Temperature Sensitivity at 1.7 GHz Typical Detected Voltage vs. Temperature Input Power (dBm) 0 VOut @ -40C (mV) 74 241 570 VOut @ +25C (mV) 64 230 550 VOut @ +85C (mV) 59 226 550 Forward Current (mA) 1.000 +25C -40C 0.100 10 17 0.010 Conditions: 1.7 GHz, 10 dBm input power, 1 V applied to test circuit. Detected voltage is differential voltage, V4-V3, on test circuit. 0.001 0 0.5 1.0 1.5 Forward Voltage (V) Schottky Diode DC Characteristic 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/01A Directional Detector DD01-92 SC-88 (6 Lead SC-70) 0.079 (2.00 mm) 0.008 (0.20 mm) 0.0256 (0.65 mm) BSC 0.049 (1.25 mm) 0.004 (0.10 mm) Absolute Maximum Ratings Characteristic Incident Power (CW) @ SWR = 2.0 Max. DC Bias Current Operating Temperature Storage Temperature Value 4 W @ < 1 GHz 2 W @ 1-2.5 GHz 10 mA -40 to +85C -65 to +150C 0.087 (2.20 mm) 0.008 (0.20 mm) PIN 1 INDICATOR 0.035 (0.90 mm) 0.004 (0.10 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) 0.009 (0.23 mm) REF 0.010 (0.25 mm) 0.006 (0.15 mm) Test Circuit RF In RF In 100 k 100 pF Detected Output 0.008 (0.20 mm) 0.004 (0.10 mm) 6 5 4 Evaluation Board Layout RF In SK38908 DD0*-92 100 k Detect Out 1 RF Out 2 3 Temperature Compensation Out 100 pF 15 pF 100 pF RF Out Direct 22 nH 100 k 100 pF 1V Bias + - 15 pF RF Out Bias In 22 nH 100 k Temp. Comp. Out Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 1/01A 3 |
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