AP601 WJ Communications, Inc., AP601 Datasheet - Page 8

• Manufacturer Part Number: AP601
• Description: High Dynamic Range 1.8w 28v Hbt Amplifier
• Manufacturer: WJ Communications, Inc.

WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: [phone] • e-mail: [e-mail] • Web site: www.wj.com, www.TriQuint.com
The AP601 can be configured to operate with lower bias current by varying the bias-adjust resistor – R2. The recommended
circuit configurations shown previously in this datasheet have the device operating with a 40 mA as the quiescent current (I
This biasing level represents the best tradeoff in terms of linearity and efficiency. Lowering I
efficiency of the device, but degraded linearity. Increasing I
the device’s efficiency. Measured data shown in the plots below represents the AP601 measured and configured for 2.14 GHz
applications. It is expected that variation of the bias current for other frequency applications will produce similar performance
results.
(mA)
Icq
10
20
30
40
50
60
70
80
2110-2170 MHz Application Note: Changing Icq Biasing Configurations
-30
-40
-50
-60
15
14
13
12
11
10
18
18
5.44k
3.48k
2.61k
2.06k
1.67k
1.42k
1.22k
10 mA
50 mA
10 mA
50 mA
12k
(Ω)
R2
AP601
High Dynamic Range 1.8W 28V HBT Amplifier
ACLR1 vs. Output Power vs. Icq
Average Output Power (dBm)
Gain vs. Output Power vs. Icq
22
20
WCDMA, Vcc = 28V, 2140 MHz, 25 ˚C
CW tone, Vcc = 28V, 2140 MHz, 25 ˚C
20 mA
60 mA
Output Power (dBm)
20 mA
60 mA
V
(V)
5
5
5
5
5
5
5
5
PD
26
22
30 mA
70 mA
30 mA
70 mA
PIN_V
2.50
2.58
2.63
2.68
2.72
2.77
2.81
2.85
(V)
40 mA
80 mA
30
24
PD
40 mA
80 mA
80
60
40
20
26
34
0
14
120
100
34
30
26
22
18
80
60
40
20
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
70 mA
80 mA
0
Thermal Rise vs. Output Power vs. Icq
4
16
18
10 mA
50 mA
Output Power (dBm)
Output Power vs. Input Power vs. Icq
18
Efficiency vs. Output Power vs. Icq
Average Output Power (dBm)
WCDMA, Vcc = 28V, 2140 MHz, 25 ˚C
CW tone, Vcc = 28V, 2140 MHz, 25 ˚C
8
20
Vcc = 28V
Input Power (dBm)
20
20 mA
60 mA
CQ
has nominal improvement upon the linearity, but will degrade
12
22
22
30 mA
70 mA
24
10 mA
30 mA
50 mA
70 mA
16
24
40 mA
80 mA
26
20 mA
40 mA
60 mA
80 mA
26
20
Specifications and information are subject to change without notice
C22
1.2pF
3,3pF
30
25
20
15
10
60
50
40
30
20
10
5
0
0
18
18
10 mA
30 mA
50 mA
70 mA
10 mA
30 mA
50 mA
70 mA
Efficiency vs. Output Power vs. Icq
Efficiency vs. Output Power vs. Icq
C5
2.4pF
Average Output Power (dBm)
20
22
WCDMA, Vcc = 28V, 2140 MHz, 25 ˚C
CW tone, Vcc = 28V, 2140 MHz, 25 ˚C
20 mA
40 mA
60 mA
80 mA
20 mA
40 mA
60 mA
80 mA
Output Power (dBm)
CQ
1000pF
C7
will improve upon the
22
26
Page 8 of 10 May 2007 ver 1
C19
1.8pF
24
30
CQ
26
34
).