ST TDR019V1 User Manual
Demonstration board using the PD85004
Features
■ Excellent thermal stability
■ Frequency: 860 - 960 MHz
■ Supply voltage: 13.6 V
■ Output power: 4 W
■ Power gain: 17.4 ± 0.3 dB
■ Efficiency: 56 % - 65 %
■ Load mismatch: 20:1
■ BeO-free amplifier
Description
The STEVAL-TDR019V1 is a demonstration
board using the PD85004 LDMOS transistor. It is
designed for 2-way radio applications.
STEVAL-TDR019V1
for 900 MHz 2-way radio
Table 1. Device summary
Part number Mechanical specification
STEVAL-TDR019V1 L = 60 mm, W = 30 mm
October 2010 Doc ID 18092 Rev 1 1/9
www.st.com
9
Contents STEVAL-TDR019V1
Contents
1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Circuit layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2/9 Doc ID 18092 Rev 1
STEVAL-TDR019V1 Electrical characteristics
1 Electrical characteristics
TA = +25 oC, VDD = 13.6 V, I
= 50 mA
dq
Table 2. Electrical specifications
Symbol Test conditions Min Typ Max Unit
Frequency Frequency range 860 960 MHz
P
OUT
Gain @ P
ND @ P
H2 2nd harmonic @ P
H3 3rd harmonic @ P
= 19 dBm 17.4 ± 0.3 dB
IN
= 19 dBm 56 - 65 %
IN
= 4 W -30 / -38 dBc
OUT
= 4 W -50 / -62 dBc
OUT
VSWR Load mismatch all phases @ P
= 4 W 20:1
OUT
4W
Doc ID 18092 Rev 1 3/9
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