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MICRO LAMBDA YIG Filters, model types MLFP Series and MLFR-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 convert, Converting standard 12 bit binary numbers into mA of current to tune a magnetic tuning coil.
POSITIVE
INPUT DIGITAL DRIVERS
PD 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 PD 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.
Negative input drives which provide the main coil current on the –15 volt input line, are available as an option.
Frequency drift performance can be minimized 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 PD-SERIES
COMMERCIAL DIGITAL DRIVERS
- Customer
Defined "Truth" Table
- Latched
TTL
- Negative
Input Drivers
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