STEVAL-TDR023V1
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
The STEVAL-TDR023V1 is a common source
N-channel enhancement-mode lateral field effect
RF power amplifier designed for UHF mobile radio applications.
Mechanical specification:
L = 70 mm, W = 30 mm
Table 1.
Device summary
Part number
STEVAL-TDR023V1
October 2010 Doc ID 18048 Rev 1 1/8 www.st.com
8
3
4
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2
Contents
Contents
STEVAL-TDR023V1
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2/8 Doc ID 18048 Rev 1
STEVAL-TDR023V1 Electrical characteristics
T
A
= + 25 °C, V
DD
= 13.6 V, I dq
= 150 mA
Table 2.
Symbol
Electrical specification
Test conditions
Freq
P
OUT
Gain
Gain flatness
Frequency range
@ P
@ P
OUT
OUT
= 20W
= 20W
Efficiency @ P
OUT
= 20W
H2 @ P
OUT
= 20W
H3 @ P
OUT
= 20W
VSWR Load Mismatch all phases @ P
OUT
= 20W
Min.
460
-48
-55
Typ.
20
13.3
51 - 66
Max.
540
± 1.5
-55
-60
20:1 dB
% dB dB
Unit
MHz
W dB
Doc ID 18048 Rev 1 3/8
Test circuit
Figure 1.
Test circuit schematic
STEVAL-TDR023V1
4/8 Doc ID 18048 Rev 1
STEVAL-TDR023V1
Figure 2.
Circuit layout
Circuit layout
Table 3.
Part type
Component part list
Component
ID
Description
CAP C1 Capacitor
CAP
CAP
CAP
Electrolytic
CAP
Tantalum
CAP
CAP
CAP
CAP
CAP
CAP
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
150pF
150pF
1 nF
10 nF
220 µF
1 µF
47pF
3.3pF
6.8pF
39pF
39pF
Value Case size Manufacturer
1206
1206
1206
1206
Murata
Murata
Murata
Murata
100B
100B
100B
100B
100B
ATC
ATC
ATC
ATC
ATC
Part code
GRM42-
6C0G151J50
GRM42-
6C0G151J50
GRM42-
6C0G102J50
GRM42-
6X7R104K50
470
3R3
6R8
390
390
Doc ID 18048 Rev 1 5/8
Circuit layout STEVAL-TDR023V1
Table 3.
Part type
Component part list (continued)
Component
ID
Description Value
CAP
CAP
CAP
TL
TL
TL
TL
TL
Ferrite bead
Ferrite bead
C12
C13
C14
TL1, TL7
TL2
TL3, TL4
TL5
TL6
B1
B2
Capacitor
Capacitor
Capacitor
Transmission
Line
Transmission
Line
Transmission
Line
Transmission
Line
Transmission
Line
Ferrite Bead
Ferrite Bead
5.6pF
3.9pF
47pF
INDUCTOR L1 Inductor 43nH
Case size Manufacturer
100B
100B
100B
ATC
ATC
ATC
W = 2.87 mm L = 6 mm
W = 4.9 mm L = 5 mm
W = 6 mm L = 3 mm
W = 4.9 mm L = 2.5 mm
Part code
5R6
3R9
470
INDUCTOR
INDUCTOR L3
Transistor PD55025-E
Resistor
POT
Resistor
SMA-CONN
SMA-CONN
ZENER
Board
L2
R1
R2
R3
RF in
Inductor
Inductor
LDMOS
Resistor
Potentiometer
Resistor
SMA-CONN
5nH
5nH
15 ohms
10 K
1K
RF out
D1
SMA-CONN
Zener Diode 5.1 V
FR-4 THk=0.060" 2OZ Cu Both Sides
W = 4.9 mm L = 2.5 mm
1206
1206
SOD110
PANASONIC
PANASONIC
Coilcraft Mini
Spring
Coilcraft Mini
Spring
Coilcraft Mini
Spring
STMicroelectronics
TYCO
ELECTRONICS
BOURNS
ELECTRONICS
TYCO
ELECTRONICS
Johnson
Johnson
PHILIPS
EXCELDRC35C
EXCELDRC35C
B10TJ
A02TJ
A02TJ
PD55025-E
01623440-1
3214W-1-103E
01623440-1
142-0701-801
142-0701-801
BZX284C5V1
6/8 Doc ID 18048 Rev 1
STEVAL-TDR023V1
Table 4.
Date
11-Oct-2010
Document revision history
Revision
1 Initial release.
Changes
Revision history
Doc ID 18048 Rev 1 7/8
STEVAL-TDR023V1
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