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For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
WIDEBAND VCOS - SMT
1
HMC732LC4B
v02.0514
WIDEBAND MMIC VCO WITH BUFFER AMPLIFIER
6 - 12 GHz
General Description
Features
Functional Diagram
The HMC732LC4B is a wideband MMIC Voltage
Controlled Oscillator which incorporates the resonator,
negative resistance device, and varactor diode. Output
power and phase noise performance are excellent
over temperature due to the oscillator’s monolithic
construction. The Vtune port accepts an analog tuning
voltage from 0 to +23V. The HMC732LC4B VCO
operates from a single +5V supply, consumes only
57 mA of current, and is housed in a RoHS compliant
SMT package. This wideband VCO uniquely combines
the attributes of ultra small size, low phase noise, low
power consumption, and wide tuning range.
Wide Tuning Bandwidth
Pout: +1 dBm
Low SSB Phase Noise: -95 dBc/Hz @100 kHz
No External Resonator Needed
Single Positive Supply: +5V @ 57 mA
24 Lead Ceramic 4x4 mm SMT Package: 16 mm²
Typical Applications
Low Noise wideband MMIC VCO is ideal for:
• Industrial/Medical Equipment
• Test & Measurement Equipment
• Military Radar, EW & ECM
Electrical Specications, TA = +25 °C, Vcc = +5V [1]
Parameter Min. Typ. Max. Units
Frequency Range 6 - 12 GHz
Power Output 1dBm
SSB Phase Noise @ 10 kHz Offset -65 dBc/Hz
SSB Phase Noise @ 100 kHz Offset -95 dBc/Hz
Tune Voltage (Vtune) 023 V
Supply Current (Icc) (Vcc = +5V) 57 mA
Tune Port Leakage Current (Vtune = +23V) 10 µA
Output Return Loss 15 dB
2nd Harmonic -12 dBc
Pulling (into a 2.0:1 VSWR) 7 MHz pp
Pushing @ Vtune= +20V, F = 12 GHz -85 MHz/V
Frequency Drift Rate @ 6 GHz 0.4 MHz/°C
Frequency Drift Rate @ 12 GHz 0.25 MHz/°C
[1] A load VSWR of ≤ 2.0:1, across the frequency range of 0.01-14 GHz, is required for proper operation.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
WIDEBAND VCOS - SMT
2
HMC732LC4B
v02.0514
WIDEBAND MMIC VCO WITH BUFFER AMPLIFIER
6 - 12 GHz
Frequency vs. Tuning Voltage, Vcc = +5V
Sensitivity vs. Tuning Voltage, Vcc = +5V
Typical SSB Phase Noise @ Vtune = +5V
SSB Phase Noise vs. Tuning Voltage
Output Power vs.
Tuning Voltage, Vcc = +5V
Frequency vs. Tuning Voltage, T = +25 °C
5
6
7
8
9
10
11
12
13
14
15
0 5 10 15 20 25
+25C
+85C
-40C
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (Vdc)
100
150
200
250
300
350
400
450
500
0 5 10 15 20 25
+25C
+85C
-40C
TUNING SENSITIVITY (MHz/VOLT)
TUNING VOLTAGE (Vdc)
-140
-120
-100
-80
-60
-40
-20
0 5 10 15 20 25
10 kHz
100 kHz
1 MHz
SSB PHASE NOISE (dBc/Hz)
TUNING VOLTAGE (Vdc)
5
6
7
8
9
10
11
12
13
14
15
0 5 10 15 20 25
4.75V
5.00V
5.25V
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (Vdc)
-4
-2
0
2
4
6
8
0 5 10 15 20 25
+25C
+85C
-40C
OUTPUT POWER (dBm)
TUNING VOLTAGE (Vdc)
-150
-130
-110
-90
-70
-50
-30
-10
1e+3 1e+4 1e+5 1e+6 1e+7
+ 25C
+ 85C
- 40C
SSB PHASE NOISE (dBc/Hz)
OFFSET FREQUENCY (Hz)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
WIDEBAND VCOS - SMT
3
HMC732LC4B
v02.0514
WIDEBAND MMIC VCO WITH BUFFER AMPLIFIER
6 - 12 GHz
Absolute Maximum Ratings
Reliability Information
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Junction Temperature To Maintain
1 Million Hour MTTF 135 °C
Nominal Junction Temperature
(T = 85 °C) 110 °C
Thermal Resistance
(Junction to GND paddle, 5V supply) 91 °C/W
Operating Temperature -40 °C to + 85 °C
Supply Current vs. Vcc, T = 25 °C
40
45
50
55
60
65
0 5 10 15 20 25
+ 4.75V
+ 5.00V
+ 5.25V
Icc (mA)
TUNING VOLTAGE (Vdc)
Vcc +5.5 V
Vtune -1 to +25V
Storage Temperature -65 °C to +150 °C
ESD Sensitivity (HBM) Class 1A
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
WIDEBAND VCOS - SMT
4
HMC732LC4B
v02.0514
WIDEBAND MMIC VCO WITH BUFFER AMPLIFIER
6 - 12 GHz
Outline Drawing
NOTES:
1. PACKAGE BODY MATERIAL: ALUMINA
2. LEAD AND GROUND PADDLE PLATING: GOLD FLASH OVER Ni.
3. DIMENSIONS ARE IN INCHES [MILLIMETERS].
4. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm DATUM -C-
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
Package Information
Part Number Package Body Material Lead Finish MSL Rating Package Marking [2]
HMC732LC4B Alumina, White Gold over Nickel MSL3 [1] H732
XXXX
[1] Max peak reow temperature of 260 °C
[2] 4-Digit lot number XXXX
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
WIDEBAND VCOS - SMT
5
HMC732LC4B
v02.0514
WIDEBAND MMIC VCO WITH BUFFER AMPLIFIER
6 - 12 GHz
Pin Number Function Description Interface Schematic
1 - 3, 5 - 11,
13, 16 - 24 N/C No Connection. These pins may be connected to RF/DC
ground. Performance will not be affected.
4Vtune
Control Voltage and Modulation Input. Modulation
bandwidth dependent on drive source impedance. See
“Determining the FM Bandwidth of a Wideband Varactor
Tuned VCO” application note.
12 Vcc Supply Voltage Vcc= +5V
14 GND Package bottom has an exposed metal paddle that
must also be RF & DC grounded.
15 RFOUT
RF output (AC coupled)
(A load VSWR of ≤ 2.0:1, across the frequency range of
0.01-14 GHz, is required for proper operation.)
Pin Descriptions
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
WIDEBAND VCOS - SMT
6
HMC732LC4B
v02.0514
WIDEBAND MMIC VCO WITH BUFFER AMPLIFIER
6 - 12 GHz
The circuit board used in the application should
use RF circuit design techniques. Signal lines
should have 50 Ohm impedance while the package
ground leads and exposed ground paddle should
be connected directly to the ground plane similar
to that shown. A sufficient number of via holes
should be used to connect the top and bottom
ground planes. The evaluation circuit board shown
is available from Hittite upon request.
Evaluation PCB
List of Materials for Evaluation PCB 108648 [1]
Item Description
J1 RF Connector, SMA
J2 RF Connector, SMA
J3 DC Header
C1 1000 pF Capacitor, 0402 Pkg.
C2 4.7 µF Capacitor, Tantalum
U1 HMC732LC4B VCO
PCB [2] 108646 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR or Rogers 4350
