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
碌A(chǔ)
by applying 1 V
through 100 k鈩?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 25擄C
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, V
4
鈥揤
3
, on test circuit.
Insertion loss at 870鈥?20 MHz shall be less than 0.4 dB at 85擄C.
Insertion loss at 1.7鈥?.8 GHz shall be less than 0.6 dB at 85擄C.
Frequency
0.8鈥?.2 GHz
1.8鈥?.0 GHz
870鈥?20 MHz
1.7鈥?.8 GHz
0.8鈥?.2 GHz
1.2鈥?.0 GHz
0.8鈥?.2 GHz
1.2鈥?.0 GHz
0.8鈥?.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
碌V
mV
mV
鈩?/div>
10
200
480
10
7,500
Alpha Industries, Inc.
[781] 935-5150
鈥?/div>
Fax
[617] 824-4579
鈥?/div>
Email
sales@alphaind.com
鈥?/div>
www.alphaind.com
Specifications subject to change without notice. 1/01A
1
1
2
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