LDU 688XL PRE ORDER

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General Description

Actual Power Amplifier Picture

LDU688XL GR06120

This ultra linear power amplifier pallet has been designed to cover the entire UHF TV band from 470 to 862MHz, offering

OEMs a single, unsurpassed solution for their high power amplifier designs. Designed for analog and digital applications,

the LDU688XL is equipped with the latest generation of LDMOS power devices for increasing ruggedness and reliability.

Patented bias control (IR SmartBias®, optional). The Matching circuit has been design to assure the best efficiency vs.

power output

Electrical Specifications

Parameter Min. Typ. Max Units Notes

Frequency 470 862 MHz Full coverage without tuning

Power Input 0,3 W

Gain 17 18 dB

V Supply 50 52 Vdc

Drain Current 18 A

Input return loss -18 dB

Phase Variation +/-5% Unit to unit

Gain Variation +/-1% dB

Baseplate Temp. -10 +75 C

Analog Power 550 Wps Common amplification

IMD -54 dBc @ 550Wps-Red Field

Differential Gain 3,5 5 % @ 550Wps-Red Field

Differential Phase 2 5 % @ 550Wps-Red Field

Analog Power (ATV) 550 600 Wps

Digital Power (DVB) 200 Wrms

M.E.R. (DVB) 32 dB

Shoulders (DVB) -34 -35,5 dBc At +/-4,2MHz

Physical Dimensions (LxWxH) =

Weight = 0,7 kg / 1,54 lb

All Specifications are valid for load impedance 50 Ohm.

ABSOLUTE Maximum Ratings

Parameter Value Units Notes

Output Power 220 W rms

Output Power 550 W cw

Input Power 0,5 W

Operating Voltage 52 Vdc

Bias Current 1,5 A

Drain Current 18 A

VSWR 3:1

Operating Temperature -10 +45 °C

Storage Temp. -20 +80 °C

Base Plate temp. 80 °C

133mm x 98mm x

ABSOLUTE Maximum Ratings

Parameter Value Units Notes

Output Power 220 W rms

Output Power 550 W cw

Input Power 0,5 W

Operating Voltage 52 Vdc

Bias Current 1,5 A

Drain Current 18 A

VSWR 3:1

Operating Temperature -10 +45 °C

Storage Temp. -20 +80 °C

Base Plate temp. 80 °C