DD01-92 Datasheet, PDF (1/3 Pages) Alpha Industries – Directional Detector

Directional Detector
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
DD01-92
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 µA by applying 1 V
through 100 kΩ 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
Electrical Specifications at 25°C
Detected Voltage
Parameter
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 85°C.
Insertion loss at 1.7–1.8 GHz shall be less than 0.6 dB at 85°C.
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.
Typ. Max. Unit
80
120
mV
150
200
mV
0.25 0.30
dB
0.50 0.55
dB
20
dB
15
dB
20
dB
15
dB
10
dB
200
µV
480
mV
10
mV
7,500
Ω
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 1/01A