1. Product profile

1.1 General description

A 900 W LDMOS RF power transistor for broadcast Doherty, class-AB transmitter and

industrial applications. The excellent ruggedness of this device makes it ideal for digital

and analog transmitter applications in the frequency range from 400 MHz to 860 MHz.

[1]

PAR (of output signal) at 0.01 % probability on CCDF; PAR of input signal = 9.5 dB at 0.01 % probability on

CCDF.

[2]

ProTelevision 3000 Exciter corrected DVB-T.

[3]

Narrowband classical Doherty application using two transistors.

[4]

Anywave CTTB exciter XS.

[5]

Narrowband Doherty using one transistor.

1.2 Features and benefits



Designed for broadband and Doherty operation



High efficiency



Integrated dual sided ESD protection



Excellent ruggedness



High power gain



Excellent reliability



Easy power control



Excellent stability



For RoHS compliance see the product details on the Ampleon website

1.3 Applications



Broadcast transmitter applications in the UHF band



Digital and analog broadcasting



Industrial, scientific and medical applications



Applicable at frequencies from 400 MHz to 860 MHz

BLF989; BLF989S

UHF power LDMOS transistor

Rev. 3 — 24 May 2019

Product data sheet

Table 1.

Application information

specified.

Test signal

f

(MHz)

(V)

(W)

(dB) (%) (dBc)

(dB)

class-AB broadband/DVB-T (8k OFDM)

470 to 710 50

150

20

34

30

8.2 [1]

symmetric Doherty/DVB-T (8k OFDM) [2][3] 470 to 500 50

300

19

50

37

-

symmetric Doherty/DVB-T (8k OFDM) [4][5] 474 to 490 50

200

19

53

41

-