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RF power amplifier using 1 x PD55025-E
N-channel enhancement-mode lateral MOSFETs
Features
■ 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
Description
STEVAL-TDR023V1
Mechanical specification:
L = 70 mm, W = 30 mm
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 1/8
www.st.com
8
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Contents STEVAL-TDR023V1
Contents
1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2/8 Doc ID 18048 Rev 1
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STEVAL-TDR023V1 Electrical characteristics
1 Electrical characteristics
TA = + 25 °C, VDD = 13.6 V, I
= 150 mA
dq
Table 2. Electrical specification
Symbol Test conditions Min. Typ. Max. Unit
Freq Frequency range 460 540 MHz
P
OUT
Gain @ P
Gain
flatness
@ P
Efficiency @ P
H2 @ P
H3 @ P
= 20W 13.3 dB
OUT
= 20W ± 1.5 dB
OUT
= 20W 51 - 66 %
OUT
= 20W -48 -55 dB
OUT
= 20W -55 -60 dB
OUT
VSWR Load Mismatch all phases @ P
= 20W 20:1
OUT
20 W
Doc ID 18048 Rev 1 3/8