UHF power LDMOS transistor

A 600 W LDMOS RF power transistor for broadcast Doherty transmitter applications. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications.

 

Whitepaper Doherty Architectures in UHF

This White Paper explains different PA architectures which can be used in today’s UHF Broadcast industry. 

In this paper a brief discussion will be given to explain these new Doherty architectures and to help customers finding the best solution for their transmitter. Ampleon’s transistor family BLF8XX can support these Doherty architectures.

Click here to download.

Features and benefits

  • High efficiency
  • High power gain
  • Excellent ruggedness (VSWR ≥ 40 : 1 through all phases)
  • Excellent thermal stability
  • Integrated ESD protection
  • One Doherty design covers the full bandwidth from 470 MHz to 860 MHz
  • Internal input matching for ease of use
  • Compliant to Directive 2002/95/EC, regarding Restriction of Hazardous Substances (RoHS)

Applications

  • Broadcast transmitter applications in the UHF band
  • Digital Broadcasting

Downloads

Datasheet
All models
All documentation

All documents

Design tool

RF Power Lifetime Calculator

Transistor:
BLF888D

UHF power LDMOS transistor

°C

Parametrics

Symbol Parameter Conditions Min Typ/Nom Max Unit
frange frequency range 470 806 MHz
PL(1dB) nominal output power at 1 dB gain compression 600 W
Test signal: DVB-T (8k OFDM)
Gp power gain VDS = 50 V [0] 17 dB
ηD drain efficiency VDS = 50 V; 470 MHz < f < 806 MHz; IDq = 1.3 A [0] 40 %
PL(AV) average output power [0] 115 W
IMDshldr intermodulation distortion shoulder attenuation [0] -40 dBc
PAR peak-to-average ratio [0] [1] 8 dB

Package / Packing

Type number Package Outline version Reflow-/Wave
soldering
Packing Product status Marking Orderable part number,
(Ordering code (12NC))
BLF888D SOT539A
(SOT539A)
sot539a_po Bulk Pack Active Standard Marking BLF888DU
(9340 678 64112)

Pinning info

Pin Symbol Description Simplified outline Graphic symbol
1 D1 drain1 (peak)
2 D2 drain2 (main)
3 G1 gate1 (peak)
4 G2 gate2 (main)
5 S source

Quality

Type number Orderable part number Chemical content RoHS / RHF Leadfree conversion date MSL MSL LF
BLF888D BLF888DU BLF888D Always Pb-free 1 1
Quality and reliability disclaimer

Ordering & availability

Type number Ordering code (12NC) Orderable part number Distributor Buy online Samples
BLF888D 9340 678 64112 BLF888DU DigiKey Buy Request samples
RFMW Buy

Design support

Title Type Date
PCB Design BLF888D(S) (Data sheet) Design support 2014-04-25
BLF888D ADS-2017 Simulation model 2017-04-13