PHASE LOCKED OSCILLATOR
MODEL MDR6100-17000 (17 GHz)
Features
Description
! Low Phase Noise: -108 dBc/Hz @ 100 kHz
Spectrum Microwave’s Series MDR6100 Phase
! Low Spurious: -80 dBc Typical
! External Reference
! Environmental Screening Available
Locked Oscillators use a Dielectric Resonator in
the resonant circuit. The circuit is lightly loaded to
obtain the lowest phase noise possible.
Specifications1
The resonator is epoxied to a printed circuit
board and well grounded to minimize modulation
sidebands during shock and vibration.
CHARACTERISTIC
TYPICAL
Ta= 25 ºC
17
MIN/MAX
Ta = -20 ºC to +65 ºC
17
Frequency (GHz)2
Mechanical Tuning
Bandwidth (MHz)3
Output Power (dBm)4
Variation Over
+/- 20
+13
+/- 20 Min.
+12
Buffer amplifiers are used to provide isolation
from load VSWRs; Regulators filter noise on
the DC input voltage.
Temperature (dBm)
Spurious (dBc)
Phase Noise (dB)5
+/- 0.75
+/- 1
-70
-80
Internal reference models are also available.
A lock indicator circuit is provided to signal an
out-of-lock condition.
-93 dBc/Hz @ 1 KHz
-103 dBc/Hz @ 10 KHz
-108 dBc/Hz @ 100 KHz
-123 dBc/Hz @ 1 MHz
VSWR
Harmonics (dBc)
External Reference
1.5
-20
100 MHz
2.0
-15
1 / 200 MHz
Notes:
1. Specifications labeled “min.” or “max.” are guaranteed in a 50 Ohm system over the
specified temperature range.
2. Output frequency must be specified, and it is an integer multiple of the internal crystal
reference frequency.
Lock Indicator
TTL (High=Locked)
TTL (Low=Unlocked)
Supply Power DC6
mA
+12
265
+12
275
3. Mechanical tuning of PLO in unlocked mode.
4. Higher output power is available.
5. Phase Noise at offsets <100 kHz is dependent on external reference and can be
approximated as follows: Phase Noise (dB) = 20log(N) +3 dB above the external reference
phase noise, where N = multiple of reference.
6. Other input voltages are available.
Phase Voltage
Set to (nom.)
Lock Range (min.)
Phase-Lock Alarm
Locked
+5.0 VDC
7. Actual or impending loss of lock.
8. Package must be verified by Spectrum Microwave.
+2 to +9 VDC
Transistor Collector (NPN)
Open Vc = 30 VDC max.
Saturated to Ground
Vce = +0.5 VDC max.
Ic = 50 mA max.
Unlocked7
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