v01.0604
MICROWAVE CORPORATION
HMC391LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 3.9 - 4.45 GHz
Features
Pout: +5.0 dBm
Phase Noise: -106 dBc/Hz @100 KHz
No External Resonator Needed
Single Supply: +3V @ 30 mA
QFN Leadless SMT Package, 16 mm
2
Typical Applications
Low noise MMIC VCO w/Buffer Amplifier for:
• VSAT & Microwave Radio
• Radio Altimetry
• Test Equipment & Industrial Controls
• Military
Functional Diagram
General Description
The HMC391LP4 is a GaAs InGaP Heterojunc-
tion Bipolar Transistor (HBT) MMIC VCO with
integrated resonator, negative resistance device,
varactor diode, and buffer amplifier. Covering
3.9 to 4.45 GHz, the VCO’s phase noise per-
formance is excellent over temperature, shock,
vibration and process due to the oscillator’s
monolithic structure. Power output is 5.0 dBm
typical from a single supply of +3V @ 30 mA.
The voltage controlled oscillator is packaged in a
low cost leadless QFN 4 x 4 mm surface mount
package.
15
VCOs - SMT
Electrical Specifications,
T
A
= +25° C, Vcc = +3V
Parameter
Frequency Range
Power Output
SSB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RF Output
Tune Voltage (Vtune)
Supply Current (Icc) (Vcc = +3.0V)
Tune Port Leakage Current
Output Return Loss
Harmonics
2nd
3rd
Pulling (into a 2.0:1 VSWR)
Pushing @ Vtune= +5V
Frequency Drift Rate
7
0
30
10
1.5
Min.
Typ.
3.9 - 4.45
5.0
-106
10
Max.
Units
GHz
dBm
dBc/Hz
V
mA
µA
dB
-9
-23
8.0
16
0.5
dBc
dBc
MHz pp
MHz/V
MHz/°C
15 - 44
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
v01.0604
MICROWAVE CORPORATION
HMC391LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 3.9 - 4.45 GHz
GaAs MMIC SUB-HARMONICALLY
Frequency vs. Tuning Voltage, Vcc= +3V
PUMPED MIXER 17 - 25 GHz
Frequency vs. Tuning Voltage, T= 25°C
4.7
4.6
OUTPUT FREQUENCY (GHz)
4.5
4.4
4.3
4.2
4.1
4
3.9
3.8
3.7
3.6
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
Vcc=2.75V
Vcc=3.0V
Vcc=3.25V
4.7
4.6
OUTPUT FREQUENCY (GHz)
4.5
4.4
4.3
4.2
4.1
4
3.9
3.8
3.7
3.6
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
+25 C
+85 C
-40 C
Sensitivity vs. Tuning Voltage, Vcc= +3V
300
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
1
2
3
4
5
6
7
TUNING VOLTAGE (VOLTS)
Output Power vs.
Tuning Voltage, Vcc= +3V
8
7
OUTPUT POWER (dBm)
6
5
4
3
2
1
0
+25 C
+85 C
-40 C
SENSITIVITY (MHz/VOLT)
+25 C
+85 C
-40 C
15
0
1
2
3
4
5
6
7
8
9
10
8
9
10
TUNING VOLTAGE (VOLTS)
Phase Noise vs. Tuning Voltage
-60
-65
SSB PHASE NOISE (dBc/Hz)
-75
-80
-85
-90
-95
10 KHz Offset
100 KHz Offset
Typical SSB Phase Noise @ Vtune= +5V
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
3
10
+25 C
+85 C
-40 C
-100
-105
-110
-115
-120
0
1
2
3
4
5
6
SSB PHASE NOISE (dBc/Hz)
-70
7
8
9
10
10
4
10
5
10
6
10
7
TUNING VOLTAGE (VOLTS)
OFFSET FREQUENCY (Hz)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
15 - 4
VCOs - SMT
MICROWAVE CORPORATION
v01.0604
HMC391LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 3.9 - 4.45 GHz
Absolute Maximum Ratings
Vcc
Vtune
Channel Temperature
Continuous Pdiss (T = 85°C)
(derate 6.28 mW/°C above 85°C)
Storage Temperature
Operating Temperature
+3.5 Vdc
0 to +11V
135 °C
565 W
Typical Supply Current vs. Vcc
Vcc (V)
2.75
3.0
3.25
Icc (mA)
22
30
39
Note: VCO will operate over full voltage range shown above.
-65 to +150 °C
-40 to +85 °C
Outline Drawing
15
VCOs - SMT
NOTES:
1. MATERIAL PACKAGE BODY: LOW STRESS INJECTION MOLDED
PLASTIC SILICA AND SILICON IMPREGNATED.
2. LEAD AND GROUND PADDLE MATERIAL: COPPER ALLOY
3. LEAD AND GROUND PADDLE PLATING: Sn/Pb SOLDER
4. DIMENSIONS ARE IN INCHES [MILLIMETERS].
5. LEAD SPACING TOLERANCE IS NON-CUMULATIVE
6. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
7. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
8. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.
9. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED PCB
LAND PATTERN.
15 - 46
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
MICROWAVE CORPORATION
v01.0604
HMC391LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 3.9 - 4.45 GHz
Pin Descriptions
Pin Number
1- 14, 17 - 19,
21, 23, 24
Function
N/C
Description
No Connection
Interface Schematic
15
GND
This pin must be connected to RF & DC ground.
16
RFOUT
RF output (AC coupled)
20
Vcc
Supply Voltage Vcc= 3V
15
22
VTUNE
Control Voltage Input. Modulation port bandwidth
dependent on drive source impedance.
GND
Package bottom has an exposed metal paddle that
must be RF & DC grounded.
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
15 - 4
VCOs - SMT
MICROWAVE CORPORATION
v01.0604
HMC391LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 3.9 - 4.45 GHz
Evaluation PCB
15
VCOs - SMT
List of Materials
Item
J1 - J2
J3 - J4
C1
C2
U1
PCB*
Description
PC Mount SMA RF Connector
DC Pin
4.7 µF Tantalum Capacitor
10,000 pF Capacitor, 0603 Pkg.
HMC391LP4 VCO
105667 Eval Board
The circuit board used in the final application should
use RF circuit design techniques. Signal lines should
have 50 ohm impedance while the package ground
leads and exposed paddle should be connected
directly to the ground plane similar to that shown. A
sufficient number of via holes should be used to con-
nect the top and bottom ground planes. The evalua-
tion circuit board shown is available from Hittite upon
request.
* Circuit Board Material: Rogers 4350
15 - 48
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
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