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MICRO LAMBDA
YIG Filters, model types MLFI Series and MLFM-series are available
with integrated digital driver circuits.
MICRO LAMBDA
drivers eliminate the need for customers to design or develop their
own driver circuits and sophisticated test and alignment procedures.
Integrating a driver at MICRO LAMBDA’s factory ensures that peak
performance will be achieved at the time of manufacture. Alignment
and compensation with the particular YIG filter can be maximized
down to the component level.
All drivers
in this series provide input voltage regulators, and compensation
circuits to improve frequency drift.
YIG drivers
act as Digital Word-To-Current converters, converting standard 12
bit binary numbers into mA of current to tune a magnetic tuning
coil.
POSITIVE
INPUT DIGITAL DRIVERS
CD Series
MICRO LAMBDA
positive drivers are available for commercial
environments. Standard products provide 12 bit TTL tuning
input and operate over the 0° to 65° temperature range.
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The CD series
of digital drivers provide the main coil current from the +15 volt
input line. Current increases linearly from 0 mA = 0 GHz at a rate
of approximately 50 mA per 1 GHz. A 2-8 GHz filter will require
100 mA @ 2 GHz and 400 mA @ 8 GHz.
Frequency drift
performance can be optimized with the inclusive temperature compensation
circuits within the driver. This yields filter/driver combinations
set at the factory with excellent frequency accuracy performance.
In special cases,
speed-up circuits like those used to improve the tuning speed of
YIG oscillators can also be included to provide both fasttuned filters
and with good accuracy. Filter parameters can be maximized during
factory alignment to meet customer specific requirements.
AVAILABLE
OPTIONS FOR CD-SERIES
COMMERCIAL DIGITAL DRIVERS
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