STEVAL-TDR023V1
RF power amplifier using 1 x PD55025-E
N-channel enhancement-mode lateral MOSFETs
Features
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Excellent thermal stability
Frequency: 460 - 540 MHz
Supply voltage: 13.6 V
Output power: 20 W
Gain: 13.3 dB typ.
Efficiency: 51% - 66%
Load mismatch: 20:1
BeO free amplifier
In compliance with the 2002/95/EC European
directive
Mechanical specification:
L = 70 mm, W = 30 mm
Description
The STEVAL-TDR023V1 is a common source
N-channel enhancement-mode lateral field effect
RF power amplifier designed for UHF mobile radio
applications.
Table 1.
Device summary
Part number
STEVAL-TDR023V1
October 2010
Doc ID 18048 Rev 1
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www.st.com
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Contents
STEVAL-TDR023V1
Contents
1
2
3
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
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Doc ID 18048 Rev 1
STEVAL-TDR023V1
Electrical characteristics
1
Electrical characteristics
T
A
= + 25 °C, V
DD
= 13.6 V, I
dq
= 150 mA
Table 2.
Symbol
Freq
P
OUT
Gain
Gain
flatness
@ P
OUT
= 20W
@ P
OUT
= 20W
51 - 66
-48
-55
-55
-60
20:1
Electrical specification
Test conditions
Frequency range
Min.
460
20
13.3
±
1.5
Typ.
Max.
540
Unit
MHz
W
dB
dB
%
dB
dB
Efficiency @ P
OUT
= 20W
H2
H3
VSWR
@ P
OUT
= 20W
@ P
OUT
= 20W
Load Mismatch all phases @ P
OUT
= 20W
Doc ID 18048 Rev 1
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Test circuit
STEVAL-TDR023V1
2
Figure 1.
Test circuit
Test circuit schematic
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Doc ID 18048 Rev 1
STEVAL-TDR023V1
Circuit layout
3
Figure 2.
Circuit layout
Circuit layout
Table 3.
Part type
CAP
CAP
CAP
CAP
Electrolytic
CAP
Tantalum
CAP
CAP
CAP
CAP
CAP
CAP
Component part list
Component
ID
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
Description
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Value
150pF
150pF
1 nF
10 nF
220 µF
1 µF
47pF
3.3pF
6.8pF
39pF
39pF
100B
100B
100B
100B
100B
ATC
ATC
ATC
ATC
ATC
470
3R3
6R8
390
390
Case size
1206
1206
1206
1206
Manufacturer
Murata
Murata
Murata
Murata
Part code
GRM42-
6C0G151J50
GRM42-
6C0G151J50
GRM42-
6C0G102J50
GRM42-
6X7R104K50
Doc ID 18048 Rev 1
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