ST TDR023V1 User Manual

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

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

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