MICROWAVE CORPORATION
15 - 84
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
VCOs - SMT
15
HMC431LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
v02.0604
General Description
Features
Functional Diagram
The HMC431LP4 is a GaAs InGaP Heterojunction
Bipolar Transistor (HBT) MMIC VCO with
integrated resonator, negative resistance device,
varactor diode, and buffer amplifi er. The VCO's
phase noise performance is excellent over
temperature, shock, vibration and process due to
the oscillator's monolithic structure. Power output
is 2 dBm typical from a 3.0V supply voltage. The
voltage controlled oscillator is packaged in a
low cost leadless QFN 4 x 4 mm surface mount
package.
Pout: +2 dBm
Phase Noise: -102 dBc/Hz @100 kHz
No External Resonator Needed
Single Supply: 3V @ 27 mA
16mm
2
Leadless SMT Package
Typical Applications
Low noise MMIC VCO w/Buffer Amplifi er
for C-Band applications such as:
802.11a & HiperLAN WLAN
VSAT Radios
UNII & Pt to Pt Radios
Electrical Specifi cations,
T
A
= +25 C, Vcc = +3V
Parameter
Min.
Typ.
Max.
Units
Frequency Range
5.5 - 6.1
GHz
Power Output
-1
2
dBm
SSB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RF Output
-102
dBc/Hz
Tune Voltage (Vtune)
0
10
V
Supply Current (Icc) (Vcc= 3.0V)
27
mA
Tune Port Leakage Current
10
A
Output Return Loss
6
dB
Harmonics
2nd
3rd
-15
-30
dBc
dBc
Pulling (into a 2.0:1 VSWR)
9
MHz pp
Pushing @ Vtune= +5V
12
MHz/V
Frequency Drift Rate
0.8
MHz/C
MICROWAVE CORPORATION
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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
VCOs - SMT
4.8
5
5.2
5.4
5.6
5.8
6
6.2
6.4
6.6
0
1
2
3
4
5
6
7
8
9
10
Vcc= 2.75V
Vcc= 3.0V
Vcc= 3.25V
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (VOLTS)
0
50
100
150
200
250
300
350
400
450
500
0
1
2
3
4
5
6
7
8
9
10
+25 C
+85 C
-40 C
SENSITIVITY (MHz/VOLT)
TUNING VOLTAGE (VOLTS)
-10
-8
-6
-4
-2
0
2
4
6
8
10
0
1
2
3
4
5
6
7
8
9
10
+25 C
+85 C
-40 C
OUTPUT POWER (dBm)
TUNING VOLTAGE (VOLTS)
-110
-105
-100
-95
-90
-85
-80
-75
-70
0
1
2
3
4
5
6
7
8
9
10
10kHz offset
100kHz offset
SSB PHASE NOISE (dBc/Hz)
TUNING VOLTAGE (VOLTS)
HMC431LP4
Frequency vs. Tuning Voltage, T= 25C
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
v02.0604
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
3
10
4
10
5
10
6
10
7
+25 C
+85 C
-40 C
SSB PHASE NOISE (dBc/Hz)
OFFSET FREQUENCY (Hz)
Sensitivity vs. Tuning Voltage, Vcc= +3V
Typical SSB Phase Noise @ Vtune= +5V
Phase Noise vs. Tuning Voltage
4.8
5
5.2
5.4
5.6
5.8
6
6.2
6.4
6.6
0
1
2
3
4
5
6
7
8
9
10
+25 C
+85 C
-40 C
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (VOLTS)
Frequency vs. Tuning Voltage, Vcc= +3V
Output Power vs.
Tuning Voltage, Vcc= +3V
MICROWAVE CORPORATION
15 - 86
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
VCOs - SMT
15
Absolute Maximum Ratings
Outline Drawing
HMC431LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
v02.0604
Vcc
+3.5 Vdc
Vtune
0 to +11V
Channel Temperature
135 C
Continuous Pdiss (T = 85C)
(derate 6.28 mW/C above 85C)
565 W
Storage Temperature
-65 to +150 C
Operating Temperature
-40 to +85 C
Typical Supply Current vs. Vcc
Note: VCO will operate over full voltage range shown above.
Vcc (V)
Icc (mA)
2.75
19
3.0
27
3.25
34
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.
MICROWAVE CORPORATION
15 - 87
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
VCOs - SMT
HMC431LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
v02.0604
Pin Descriptions
Pin Number
Function
Description
Interface Schematic
1 - 14, 17 -
19, 21, 23, 24
N/C
No Connection
15
GND
This pin must be connected to RF & DC ground.
16
RFOUT
RF output (AC coupled)
20
Vcc
Supply Voltage Vcc= 3V
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.
MICROWAVE CORPORATION
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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
VCOs - SMT
15
HMC431LP4
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
v02.0604
The circuit board used in the fi nal 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
suffi cient 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.
Evaluation PCB
List of Materials
Item
Description
J1 - J2
PC Mount SMA RF Connector
J3 - J4
DC Pin
C1
4.7 F Tantalum Capacitor
C2
10,000 pF Capacitor, 0603 Pkg.
U1
HMC431LP4 VCO
PCB*
105667 Eval Board
* Circuit Board Material: Rogers 4350
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