DCS-band 4W HBT Amplifier Module
AP504
Performance Graphs – Class AB Configuration (AP504-PCB)
The AP504-PCB and AP504 module is configured for Class AB by default. The resistor – R7 – which sets the current draw for
the amplifier is set at 0 in this configuration. Increasing that value will decrease the quiescent and operating current of the
amplifier module, as described on the next page.
+12V
GND
+12V
10µF
DNP
+5V
0
DNP
0
DNP
100pF
.01µF
DNP
RF IN
0
DNP
DNP
6
.01µF
DNP
100pF
Notes:
1. Please note that for reliable operation, the evaluation board will have
to be mounted to a much larger heat sink during operation and in
laboratory environments to dissipate the power consumed by the
device. The use of a convection fan is also recommended in
laboratory environments. Details of the mounting holes used in the
WJ heatsink are given on the last page of this datasheet.
2. The area around the module underneath the PCB should not contain
any soldermask in order to maintain good RF grounding.
3. For proper and safe operation in the laboratory, the power-on
sequencing should be followed:
1. Connect RF In and Out
2. Connect the voltages and ground pins as shown in the circuit.
3. Apply the RF signal
4. Power down with the reverse sequence
RF OUT
0
5
4
3
2
1
DNP
DNP
Gain
+25 °C, 12Vcc, Icq=850mA
Return Loss
+25 °C, Vcc=12V, Icq=850mA
Gain vs. Temp
1765 MHz, Vcc=12V, Icq=850mA
33
M a g n itu d e (d B )
0
-5
36
34
G a in (d B )
32
30
28
32
G a in (d B )
31
30
29
28
1700
-10
-15
-20
S11
1720
1740
1760
1780
1800
-25
1700
1720
1740
1760
1780
S22
26
1800
-40
-20
0
20
40
60
80
Frequency (MHz)
ACPR vs. Output Power vs. Temp
CDMA2000 SR1, 7FA , fc=1765 MHz,
∆
f=±885 kHz, Vcc=12V, Icq=850mA
Frequency (MHz)
Temperature (°C)
ACPR vs. Frequency vs. Temp
CDMA2000 SR1, 7FA ,
∆
f=±885 kHz, 25 dBm Pout, Vcc=12V, Icq=850mA
ACPR vs. Output Power vs. Temp
CDMA2000 SR1, 7FA , fc=1765 MHz,
∆
f=±1.98 MHz, Vcc=12V, Icq=850mA
-50
-55
-60
-65
-70
18
20
22
24
26
28
Total Output Power (dBm)
-40 °C
+25 °C
+85 °C
-50
-55
-60
-65
-70
18
20
22
24
26
28
Total Output Power (dBm)
-40 °C
+25 °C
+85 °C
-50
-55
-60
-65
-70
1750
-40 °C
+25 °C
+85 °C
A C P R (d B c )
A C P R (d B c )
A C P R (d B c )
1760
1770
1780
Frequency (MHz)
Specifications and information are subject to change without notice
WJ Communications, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: sales@wj.com
•
Web site: www.wj.com
Page 2 of 5 April 2007
WJCI [ WJ COMMUNICATION. INC. ]
