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VOLTAGE CONTROLLED CRYSTAL OSCILLATORS (VCXOS)

FMI manufactures high quality Voltage Controlled Crystal Oscillators (VCXOs) including LVDS VCXOs in
standard and custom surface mount and thru-hole packages. A VCXO allows the user to vary the
output by varying a control voltage to pin 1. Control voltage is usually specified by a max
& min voltage applied to pin 1 of VCXO oscillators. Typical control voltage ranges are
0.5 to 4.5 Vdc for a 5.0 Vdc supply voltage and 0.3 to 3.0 Vdc for a 3.3 Vdc supply
voltage. The center frequency of a VCXO is the output at the center control
voltage @ +25°C. It is specified as a target with an allowable deviation. The
target frequency is specified in MHz or kHz and tolerance is in ± ppm.

VCXO Style Choices-
Ceramic SMD VCXOs - CMOS | Ceramic SMD VCXOs - LVDS | Ceramic SMD VCXOs - LVPECL
Thru-hole VCXOs - CMOS | Thru-hole VCXOs - PECL, LVPECL
Ceramic SMD VCXOs - CMOS
Model Picture Size Style Frequency Range Temp Range Max Notes
FMVC5S3
5 x 3.2 Ceramic SMD 5 x 3.2 mm 4 Pad SMD 1.5 MHz to 52 MHz -40ºC to +85ºC +5V
FMVC3S3
5 x 3.2 Ceramic SMD 5 x 3.2 mm 4 Pad SMD 1.5 MHz to 52 MHz -40ºC to +85ºC +3.3V
FMVC5S
Ceramic SMD 5X7 6 PAD 5 x 7 mm 6 Pad SMD 1.544 MHz to 200 MHz -40ºC to +85ºC +5V
FMVC3S
CERAMIC SMD 5X7 6 PAD 5 x 7 mm 6 Pad SMD 1.544 MHz to 200 MHz -40ºC to +85ºC +3.3V
 
Ceramic SMD VCXOs - LVDS
Model Picture Size Style Frequency Range Temp Range Max Notes
FMVCLVDSC3S FMVCLVDSC3S 5 x 7 mm 6 Pad SMD 10 MHz to 250 MHz -40ºC to +85ºC +3.3V
 
Thur-hole VCXOs - CMOS
Model Picture Size Style Frequency Range Temp Range Max Notes
FMVC46 Full DIP 20 x 13 x 6 mm Full DIP 20 MHz to 160 MHz -40ºC to +85ºC +5V
FMVC33 Full DIP 20 x 13 x 6 mm Full DIP 20 MHz to 200 MHz -40ºC to +85ºC +3.3V
FMVC48 1/2 DIP, 8 Pin Dip 13 x 13 x 5.5 mm Half DIP 20 MHz to 160 MHz -40ºC to +85ºC +5V
FMVC49 1/2 DIP, 8 Pin Dip 13 x 13 x 5.5 mm Half DIP 20 MHz to 200 MHz -40ºC to +85ºC +3.3V
FMVC47 Full DIP 20 x 13 x 6 mm Full DIP 40 MHz to 160 MHz -40ºC to +85ºC +5V
high-frequency
via multiplier
FMVC30 Full DIP 20 x 13 x 6 mm Full DIP 40 MHz to 200 MHz -40ºC to +85ºC +3.3V
high-frequency
via multiplier
 
Ceramic SMD VCXOs - LVPECL
Model Picture Size Style Frequency Range Temp Range Max Notes
FMVCLVPC3S
(call for info)
6 Pad Ceramic SMD 5 x 7 mm 6 Pad SMD 70 MHz to 500 MHz -40ºC to +85ºC +3.3V
 
Thru-hole VCXOs - PECL, LVPECL
Model Picture Size Style Frequency Range Temp Range Max Notes
FMVCPCL Full DIP, DIP 14 20 x 13 x 6 mm Full DIP 30 MHz to 160 MHz -40ºC to +85ºC +5V
FMVCPCL3 Full DIP, DIP 14 20 x 13 x 6 mm Full DIP 30 MHz to 160 MHz -40ºC to +85ºC +3.3V