![](http://datasheet.mmic.net.cn/200000/MAVCML0037_datasheet_15081675/MAVCML0037_1.png)
SMT TO8 VCO Package
V 1.00
1
MAVCML
Series
Features
n
Extremely Linear Tuning
n
High Tuning Speed
n
Low Phase Noise
n
Surface Mount PCB
n
Hermetically Sealed
n
Suitable for High Reliability Applications
n
Custom Designs Available
Primary Applications
n
Radar Receivers
n
Communications Systems
n
Countermeasure Systems
n
Satellite Systems
VCOs have a wide variety of applications where very fast
tuning speeds are required. This feature along with our superior
output power flatness performance is critical for requirements
in radar receivers or for rapid generation of jamming signals in
ECM transmitters. When high frequency stability is required
for
radar,
communications
synthesizers
or
frequency
converters, these VCOs may be integrated into phase lock loop
circuitry. Low phase noise performance of the VCO, with our
highly linear tuning, simplifies loop filter design and enables
the designer to achieve superior synthesizer performance.
These VCOs can be qualified for high reliability and military
requirements. The accompanying table is an example of our
standard VCO designs. A wide range of custom designs are
also available with output frequencies to 6 GHz. Please contact
the factory to discuss your requirements.
Description
These designs utilize silicon bipolar devices as the negative
resistance generator. The frequency of operation is determined
by a varactor diode that serves as a voltage variable capacitor.
Silicon hyperabrupt varactors offer the lowest phase noise
performance.
Careful
selection
of
the
varactor
diodes
manufactured in-house provide linear monotonic tuning
characteristics requiring only simple external driver circuits.
This range of VCOs is constructed using discrete chip device
integrated onto a conventional alumina substrate or on a Glass
Microwave Integrated Circuit (GMIC
TM). This is packaged into
standard outline TO-8 SMT packages. These packages are
hermetically sealed using resistance weld techniques. This
compact rugged construction allows for simple installation on
either through hole or surface mount PCB, and finds a wide
range of applications in demanding military, hi-rel and
commercial systems.