ST TDR025V1 User Manual

STEVAL-TDR025V1

Portable UHF 2-way radio demonstration board based on the PD84001

Preliminary data

Features

■Excellent thermal stability

■Frequency: 380 - 520 MHz

■Supply voltage: 7.2 V

■Output power: 1 W

■Power gain: 15.5 ± 0.7 dB

■Efficiency: 58 % - 67 %

■Load mismatch: 20:1

■BeO-free amplifier

Description

The STEVAL-TDR025V1 demonstration board is a portable UHF 2-way radio designed as a platform for valuating the performance of the PD84001 LDMOS RF power transistor.

Table 1.	Device summary
	Order code	Mechanical specification
	STEVAL-TDR025V1	L = 60 mm, W = 30 mm

October 2010	Doc ID 18122 Rev 1	1/10
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to		www.st.com
change without notice.

Contents	STEVAL-TDR025V1

Contents

1	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3
2	Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
3	Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
4	Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
5	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9

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STEVAL-TDR025V1	Electrical characteristics

1 Electrical characteristics

TA = + 25 °C, VDD = 7.2 V, Idq = 100 mA
Table 2.	Electrical specifications
Symbol	Test conditions	Min.	Typ.	Max.	Unit
Freq	Frequency range	380		520	MHz
POUT			1		W
Gain	@ PIN = 15 dBm		15.5 ± 0.7		dB
ND	@ PIN = 15 dBm		58 - 67		%
H2	2nd harmonic @ PIN = 15 dBm		TBD		dBc
H3	3rd harmonic @ PIN = 15 dBm		TBD		dBc
VSWR	Load mismatch all phases @ POUT = 1 W			20:1

Doc ID 18122 Rev 1

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