Features

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Low Phase Noise Bipolar Transistor

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Rugged Construction for Extreme

Environmental Conditions

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High Frequency Stability

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VoltageTuned

Specifications

Maximum Ratings

Ambient Operating Temperature ............. -55ºC to +100 ºC

Storage Temperature .............................. -62ºC to +125 ºC

Case Temperature ............................................... +125 ºC

DC Voltage ....................................................... +20 Volts

Maximum DC Tuning Voltage............................ +20 Volts

Minimum DC Tuning Voltage................................. 0 Volts

NOTE: Care should always be taken to effectively ground

the case of each unit.

Rev.

9/23/08

Spectrum Microwave · 2144 Franklin Drive N.E. · Palm Bay, Florida 32905 · PH (888) 553-7531 · Fax (888) 553-7532

Spectrum Microwave · 2707 Black Lake Place · Philadelphia, Pennsylvania 19154 · PH (215) 464-4000 · Fax (215) 464-4001

www.SpectrumMicrowave.com

Mechanical Outline

COAXIAL RESONATOR

OSCILLATOR

Series 521

1800 - 2000 MHz

CHARACTERISTIC

TYPICAL

MIN/MAX

Ta= 25 ºC

Ta = -20 ºC to +70 ºC

Frequency

1800 - 2000 MHz

1800 - 2000 MHz

Supply Power DC

15

15

mA

70

80

VSWR

1.5

2.0

Phase Noise (dB)

-39 dBc/Hz @ 100 Hz

@ 1800 MHz

-79 dBc/Hz @ 1 KHz

-107 dBc/Hz @ 10 KHz

-129 dBc/Hz @ 100 KHz

-141 dBc/Hz @ 1 MHz

Spurious (dBc)

-80

-80

Output Power (dBm)

+10

+13 Max.

Harmonics (dBc)

-25

-25

Storage Temperature

-55 ºC

+125 ºC

Spectrum Microwave CROs produce impressive

frequency stability and phase noise when used in a

properly designed oscillator circuit.

Frequency Pulling

+/- 0.02%

+/- 0.03%

Frequency Pushing

+/- .01% / Volt

+/- .02% / Volt

Temperature Drift

+/- 0.1%

+/- 0.15%