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TDR014V1
User Manual
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ST TDR014V1 User Manual

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Demonstration board based on the PD55008-E
Features
■ Excellent thermal stability
■ Frequency: 400 - 500 MHz
■ Output power: 8 W
■ Efficiency: 48 % - 54 %
■ Load mismatch: 20:1
■ BeO-free amplifier
Description
The STEVAL-TDR014V1 is a demonstration board using the PD55008-E common source N­channel enhancement-mode lateral field effect RF power amplifier. It is designed as a driver for UHF mobile radio applications.
STEVAL-TDR014V1
for UHF mobile radio

Table 1. Device summary

Order code Mechanical specification
STEVAL-TDR014V1 L = 60 mm, W = 30 mm
October 2010 Doc ID 18112 Rev 1 1/11
www.st.com
11
Contents STEVAL-TDR014V1
Contents
1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2/11 Doc ID 18112 Rev 1
STEVAL-TDR014V1 Electrical characteristics

1 Electrical characteristics

TA = +25 °C, VDD = 12.5 V, I
= 100 mA
DQ

Table 2. Electrical Specification

Symbol Test conditions Min. Typ. Max. Unit
Freq Frequency range 400 500 MHz
P
OUT
Gain @ P
ND @ P
H2 2
H3 3
= 8 W 13.9 ± 0.7dB dB
OUT
= 8 W 48 54 %
OUT
ND
Harmonic @ P
RD
Harmonic @ P
= 8 W -53 -50 dBc
OUT
= 8 W -60 -55 dBc
OUT
VSWR Load mismatch all phases @ P
= 8 W 20:1
OUT
810 W
Doc ID 18112 Rev 1 3/11
Typical performance STEVAL-TDR014V1
18
V
V

2 Typical performance

Figure 1. Output power vs. input power Figure 2. Gain vs. output power
14
13
12
11
10
9
8
7
6
5
4
Output Power (W)
3
2
1
0
00000 111 1111
Vdd=
Idq=
12.5
100
V
mA
Input Powe r (W)
380 400 420 440 460 480 500
17
16
15
14
13
12
11
Gain (dB)
10
9
8
7
6
0 2 4 6 8 10 12 14
Vdd=
Idq=
12.5
100
V
mA
Pout (W)
380 400 420 440
460 480 500
Figure 3. Drain efficiency vs. output
70
65
60
55
50
45
40
35
Eff (%)
30
25
20
15
10
power
12.5
dd=
100
Idq=
02468101214
Pout (W)
380 400 420 440
460 480 500
mA

Figure 4. Gain vs. frequency

18
16
14
12
10
Gain (dB)
8
6
4
360 380 400 420 440 460 480 500 520 540
Freq (MHz)
Pout = 8W
4/11 Doc ID 18112 Rev 1
STEVAL-TDR014V1 Typical performance
Figure 5. Efficiency vs. frequency Figure 6. Input return loss vs.
80
75
70
65
60
55
50
Eff. (%)
45
40
35
30
25
20
360 380 400 420 440 460 480 500 520 540
Freq (MHz)
0
-2
-4
-6
-8
-10
RTL (dB)
-12
-14
-16
-18
360 380 400 420 440 460 480 500 520 540 560 580
frequency
Freq (MHz)

Figure 7. Harmonics vs. frequency

-40
-40
-45
-45
-50
-50
-55
-55
-60
-60
-65
-65
Harmonics (dBc)
Harmonics (dBc)
-70
-70
-75
-75
P
= 8 W
P
= 8 W
OUT
OUT
360 380 400 420 440 460 480 500 520 540
360 380 400 420 440 460 480 500 520 540
Vdd = 12.5 V
Vdd = 12.5 V Idq = 100 mA
Idq = 100 mA
Freq (MHz)
Freq (MHz)
H2 H3
H2 H3
Doc ID 18112 Rev 1 5/11
Typical performance STEVAL-TDR014V1

Figure 8. Output power vs. drain supply voltage

24
24
20
20
Pin = 30 dBm
Pin = 30 dBm
16
16
12
12
Pout (W)
Pout (W)
8
8
4
4
0
0
4 6 8 101214161820
4 6 8 101214161820
Vdd (V)
Vdd (V)
380 400 420 440 460 480 500 520
380 400 420 440 460 480 500 520
6/11 Doc ID 18112 Rev 1
STEVAL-TDR014V1 Test circuit

3 Test circuit

Figure 9. Test circuit schematic

-E
Doc ID 18112 Rev 1 7/11
Circuit layout STEVAL-TDR014V1

4 Circuit layout

Figure 10. Circuit layout

PD55008-E
8/11 Doc ID 18112 Rev 1
STEVAL-TDR014V1 Circuit layout

Table 3. Components part list for STEVAL-TDR014V1

Part type Component ID Description Value
CAP C1 Capacitor 120 pF 1206 Murata GRM42-6C0G121J50
CAP C2 Capacitor 120 pF 1206 Murata GRM42-6C0G121J50
CAP C3 Capacitor 1 nF 1206 Murata GRM42-6C0G102J50
CAP C4 Capacitor 10 nF 1206 Murata GRM42-6X7R104K50
Electrolytic
CAP
CAP C6 Capacitor 330 pF 100B ATC 331
CAP C7 Capacitor 330pF 100B ATC 331
CAP C8 Capacitor 12 pF 100B ATC 120
CAP C9 Capacitor 39 pF 100B ATC 390
CAP C10 Capacitor 43 pF 100B ATC 430
CAP C11 Capacitor 12 pF 100B ATC 120
TL TL1, TL7
TL TL2
TL TL3, TL4
TL TL5
TL TL6
Ferrite Bead B1 Ferrite Bead PANASONIC EXCELDRC35C
Ferrite Bead B2 Ferrite Bead PANASONIC EXCELDRC35C
INDUCTOR L1 Inductor 35.5nH
INDUCTOR L2 Inductor 3.85 nH
INDUCTOR L3 Inductor 8 nH
TRANSISTOR PD55008-E LDMOS STMicroelectronics PD55008-E
Resistor R1 Resistor 15 ohms 1206
POT R2 Potentiometer 10 k
Resistor R3 Resistor 1k 1206
SMA-CONN RF in SMA-CONN Johnson 142-0701-801
SMA-CONN RF out SMA-CONN Johnson 142-0701-801
ZENER D1 Zener Diode 5.1 V SOD110 PHILIPS BZX284C5V1
BOARD FR-4 THk=0.060 2OZ Cu Both Sides
C5 Capacitor 10 µF SMT Panasonic EEVHB1V100P
Transmission
Line
Transmission
Line
Transmission
Line
Transmission
Line
Transmission
Line
Case
size
Manufacturer Part code
W = 2.87 mm L = 7 mm
W = 4.9 mm L = 5 mm
W = 6 mm L = 3 mm
W = 4.9 mm L = 2.5 mm
W = 4.9 mm L = 2.5 mm
Coilcraft Mini
Spring
Coilcraft Micro
Spring
Coilcraft Mini
Spring
TYCO
ELECTRONICS
BOURNS
ELECTRONICS
TYCO
ELECTRONICS
B09TJ
0906-4J
A03TJ
01623440-1
3214W-1-103E
01623440-1
Doc ID 18112 Rev 1 9/11
Revision history STEVAL-TDR014V1

5 Revision history

Table 4. Document revision history

Date Revision Changes
18-Oct-2010 1 Initial release.
10/11 Doc ID 18112 Rev 1
STEVAL-TDR014V1
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Doc ID 18112 Rev 1 11/11
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