HMC-C200
v04.1109
DIELECTRIC RESONATOR OSCILLATOR
MODULE, 8.0 - 8.3 GHz
Features
Tuning Frequency: 8.0 - 8.3 GHz
Low SSB Phase Noise: -122 dBc/Hz @ 10 kHz Offset
Single Positive Supply: +6 to +15V @ 116 mA
Internal Voltage Regulator
Internal Buffer Amplifier
High Output Power: +14.5 dBm
Typical Applications
The HMC-C200 DRO Module is ideal for:
• Test & Measurement Equipment
• Lab Instrumentation
• Industrial / Medical Equipment
-40°C to + 85°C Operating Temperature
General Description
The HMC-C200 is a high performance dielectric
resonator oscillator (DRO) that incorporates Hittite’s
ultra-low phase noise technology and provides
-122 dBc/Hz SSB phase noise at 10 kHz offset.
The output buffer also provides 14.5 dBm of output
power. Internal temperature compensation allows this
DRO to operate over a temperature range of -40°C
to + 85°C with a frequency drift of only 2ppm/°C. The
Vtune port accepts an analog tuning voltage from
+7 to +12V and provides a range of ±1 MHz from the
center frequency. The DRO is packaged in a small,
moisture sealed 1.5”x1.5” (36 x 36 mm) module with
a field replaceable SMA Connector. The HMC-C200
can be used as a drop-in module if the SMA connector
is not used.
3
DIELECTRIC RESONATOR OSCILLATOR
• Military, EW, ECM & Communications
Functional Diagram
Electrical Specifi cations, T
A
= +25° C, Frequency = 8.2 GHz, VDC = +6.5V
Parameter
Frequency Range
Frequency Accuracy
Power Output, Center Frequency
SSB Phase Noise @ 1 kHz Offset, Center Frequency
SSB Phase Noise @ 10 kHz Offset, Center Frequency
SSB Phase Noise @ 100 kHz Offset, Center Frequency
SSB Phase Noise @ 1 MHz Offset, Center Frequency
Tune Voltage (VT)
Electric Tuning Range
2nd Harmonic (2Fo)
3rd Harmonic (3Fo)
7
-117
12
Min.
8.0
Typ.
8.2
±250
13.5
-95
-122
-140
-150
9
±1
-28
-35
12
Max.
8.3
Units
GHz
kHz
dBm
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
V
MHz
dBc
dBc
3-4
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
HMC-C200
v03.1009
DIELECTRIC RESONATOR OSCILLATOR
MODULE, 8.0 - 8.3 GHz
Electrical Specifi cations
(Continued)
Parameter
Frequency Pushing
Frequency Pulling (into 2.0:1 VSWR)
Output Return Loss
Frequency Drift Rate (Temperature)
Voltage Supply (VDC)
Supply Current @ VDC = +6.5V
Frequency Drift vs. Time @ 25°C
6
116
1
Min.
Typ.
5
5
12
2
15
Max.
Units
kHz/V
kHz pp
dB
ppm/°C
V
mA
ppm/year
Phase Noise vs. Temperature @ 8.2 GHz
0
-20
SSB PHASE NOISE (dBc/Hz)
Output Frequency vs. Temperature
8.201
3
DIELECTRIC RESONATOR OSCILLATOR
FREQUENCY (GHz)
-40
-60
-80
-100
-120
-140
-160
-180
2
10
+ 25 C
- 40 C
+ 85 C
8.2005
8.2000
8.1995
8.1990
10
3
10
4
10
5
10
6
-60
-40
-20
0
20
40
60
80
100
OFFSET FREQUENCY (Hz)
TEMPERATURE (°C)
Output Power vs. Temperature @ 8.2 GHz
20
VDC Current vs. Temperature @ 8.2 GHz
20
18
DC CURRENT (mA)
DC CURRENT (mA)
18
16
16
14
14
12
12
10
-60
10
-40
-20
0
20
40
60
80
100
-60
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
TEMPERATURE (°C)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
3-5
HMC-C200
v03.1009
DIELECTRIC RESONATOR OSCILLATOR
MODULE, 8.0 - 8.3 GHz
Frequency & Power vs. Tuning Voltage
8.202
15
Vibration Sensitivity
10
-6
G - SENSITIVITY (g /Hz)
FREQUENCY (GHz)
8.201
12.5
10
-7
X - Axis (Perpendicular to Connectors)
Y - Axis (Parallel to Connectors)
Z - axis
OUTPUT POWER (dBm)
2
8.200
10
10
-8
8.199
7.5
10
-9
8.198
7
8
9
10
VTUNE (V)
11
12
5
10
-10
10
2
10
3
10
4
OFFSET FREQUENCY (Hz)
Absolute Maximum Ratings
3
DIELECTRIC RESONATOR OSCILLATOR
VDC
VT
Storage Temperature
Operating Temperature
+15V
0 to +15V
-65 to +150 °C
-40 to +85 °C
Pin Descriptions
Pin Number
1
Function
RFOUT
Description
RF output (AC coupled) uses a female SMA connector.
Interface Schematic
2
VT
Control Voltage and Modulation Input uses a female
SMA connector. Modulation bandwidth dependent on
drive source impedance.
3
GND
Must be connected to power supply ground.
4
VDC
Supply Voltage Vdc = +6V to +15V.
5
MT
Mechanical Tuning Screw.
(This is initially set at the factory per customer specified
frequency, See Application Notes herein)
Ordering Instructions
Each HMC-C200 DRO requires tuning to a specific frequency in the 8.0 - 8.3 GHz range. To order an HMC-C200,
this frequency must be specified at the time of purchase. Hittite guarantees a ±250 kHz range around this specified
frequency upon delivery. Please refer to the Application Notes for more details. For example, when ordering an
HMC-C200 centered at 8.200 GHz, specify HMC-C200-8200.
3-6
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
HMC-C200
v03.1009
DIELECTRIC RESONATOR OSCILLATOR
MODULE, 8.0 - 8.3 GHz
Outline Drawing
3
DIELECTRIC RESONATOR OSCILLATOR
NOTES:
1. PACKAGE, COVER MATERIAL: ALUMINUM.
2. FINISH: GOLD PLATE OVER NICKEL PLATE.
3. MOUNTING SPACER: NICKEL PLATED ALUMINUM.
4. ALL DIMENSIONS ARE IN INCHES [MILLIMETERS].
Package Information
Package Type
C-18
5. TOLERANCES: UNLESS OTHERWISE SPECIFIED
5.1 .XX = `.02 [.51]
5.2 .XXX = `.010 [.25]
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
3-7
HMC-C200
v03.1009
DIELECTRIC RESONATOR OSCILLATOR
MODULE, 8.0 - 8.3 GHz
Application Notes
DRO Tuning Procedure:
1. A mechanical tuning screw (MT) is provided that can adjust the center frequency by approximately ±20 MHz
from the factory setting. This screw is set at factory per customer specified frequency. Adjusting the screw
clockwise increases the frequency while turning the screw counterclockwise decreases the frequency. The
mechanical tuning screw (MT) has stops at either end of its approximately 8 turn range.
Do not attempt to
force screw the past stops.
2. Connect the RF output to a Spectrum Analyzer and adjust the mechanical tuner (MT) to set the output fre-
quency to within 1 MHz of the desired value.
3. Set Spectrum Analyzer settings for a 10 MHz span centered on the desired output frequency. Change the
Reference Value of the Spectrum Analyzer to be approximately 15 dBm and change the vertical scale to be
1dB / division such that the peak oscillation frequency is visible on the screen.
4. Use the tune voltage (VT) to maximize the DRO output power and note the frequency.
Note: The tune voltage
should never be adjusted higher than +15V.
5. If the frequency is meeting the new requirement and the output power is greater than 12 dBm, then the tuning
procedure is complete. If the frequency is not meeting the requirement then carefully readjust the mechanical
tuner (MT) and tune voltage (VT) until the output frequency is within the required range.
3
DIELECTRIC RESONATOR OSCILLATOR
Please Note:
1. The tune voltage (VT) sustains oscillation over a fairly narrow range (approximately 1 MHz) before output
power, temperature stability and phase noise performance starts to degrade. In some cases it is possible for the
tune voltage (VT) to be adjusted to the point where oscillation stops. Therefore, the mechanical tuning screw
(MT) should be used as a coarse tune and the tune voltage (VT) is effectively a fine tune. In PLL applications
where the tune voltage (VT) is used within the loop, this limited voltage range must be considered during the
design of the loop. A limiting circuit must be used to keep the VT voltage within the optimal range.
2. If the output power is less than 12 dBm then the DRO may be at the correct frequency but the phase noise
performance and the stability over temperature may both have been degraded. It is therefore recommended
that the customer verify phase noise and stability after custom tuning.
3-8
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
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