PHASE LOCKED OSCILLATOR
MODEL 621516 (1350 MHz)
Features
! Low Phase Noise: -134 dBc/Hz @ 100 kHz
! Low Spurious: -70 dBc Typical
! External Reference
! Environmental Screening Available
Specifications
Description
CHARACTERISTIC
TYPICAL
Ta= 25 ºC
1350 MHz
MIN/MAX
Ta = -20 ºC to +70 ºC
1350 MHz
Spectrum Microwave’s Series 600 Phase Locked
Oscillators use a High “Q” Coaxial Resonator in
the resonant circuit. The circuit is lightly loaded to
obtain the lowest phase noise possible.
Frequency
Output Power (dBm)
+13
+12
Variation Over
Temperature (dBm)
+/- 0.75 dBm
-70
+/- 1 dBm
-60
Spurious (dBc)
The resonator is soldered to a printed circuit
board and well grounded to minimize modulation
sidebands during shock and vibration.
Phase Noise (dB)
-105 dBc/Hz @ 100 Hz
-128 dBc/Hz @ 1 kHz
-130 dBc/Hz @ 10 kHz
-128 dBc/Hz @ 30 kHz
-134 dBc/Hz @ 100 kHz
-145 dBc/Hz @ 1 MHz
Buffer amplifiers are used to provide isolation
from load VSWRs; Regulators filter noise on
the DC input voltage.
VSWR
1.5
-25
2.0
-20
Harmonics (dBc)
External Reference
Lock Indicator
Internal reference models are also available.
A lock indicator circuit is provided to signal an
out-of-lock condition.
100 MHz
TTL (High=Locked)
-55 ºC
1 / 200 MHz
TTL (Low=Unlocked)
+125 ºC
StorageTemperature
Supply Power DC
mA
15
120
15
125
Spectrum Microwave, Inc.
www.SpectrumMicrowave.com
2707 Black Lake Place Phila, Pa. 19154
PH: 215-464-4000 FAX: 215-464-4001
Rev.
3/19/09