HMC431LP4
/
431LP4E
v04.1106
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
Typical Applications
Low noise MMIC VCO w/Buffer Amplifier
for C-Band applications such as:
• 802.11a & HiperLAN WLAN
• VSAT Radios
• UNII & Point-to-Point Radios
Features
Pout: +2 dBm
Phase Noise: -102 dBc/Hz @100 kHz
No External Resonator Needed
Single Supply: 3V @ 27 mA
16mm
2
Leadless SMT Package
Functional Diagram
General Description
The HMC431LP4 & HMC431LP4E are GaAs InGaP
Heterojunction Bipolar Transistor (HBT) MMIC VCOs
with integrated resonators, negative resistance
devices, varactor diodes, and buffer amplifiers. 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.
10
VCO
S
& PLOs - 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
6
-15
-30
9
12
0.8
0
27
10
-1
Min.
Typ.
5.5 - 6.1
2
-102
10
Max.
Units
GHz
dBm
dBc/Hz
V
mA
μA
dB
dBc
dBc
MHz pp
MHz/V
MHz/°C
10 - 84
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 On-line at www.hittite.com
HMC431LP4
/
431LP4E
v04.1106
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
Frequency vs. Tuning Voltage, T= 25°C
6.6
OUTPUT FREQUENCY (GHz)
6.4
6.2
6
5.8
5.6
5.4
5.2
5
4.8
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
Vcc= 2.75V
Vcc= 3.0V
Vcc= 3.25V
Frequency vs. Tuning Voltage, Vcc= +3V
6.6
OUTPUT FREQUENCY (GHz)
6.4
6.2
6
5.8
5.6
5.4
5.2
5
4.8
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
+25 C
+85 C
-40 C
10
VCO
S
& PLOs - SMT
Sensitivity vs. Tuning Voltage, Vcc= +3V
500
450
SENSITIVITY (MHz/VOLT)
Output Power vs.
Tuning Voltage, Vcc= +3V
10
8
OUTPUT POWER (dBm)
6
4
2
0
-2
-4
-6
-8
-10
+25 C
+85 C
-40 C
400
350
300
250
200
150
100
50
0
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
+25 C
+85 C
-40 C
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
Phase Noise vs. Tuning Voltage
-70
SSB PHASE NOISE (dBc/Hz)
-75
Typical SSB Phase Noise @ Vtune= +5V
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
3
10
SSB PHASE NOISE (dBc/Hz)
-80
-85
-90
-95
-100
-105
-110
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
10kHz offset
100kHz offset
+25 C
+85 C
-40 C
10
4
10
5
10
6
10
7
OFFSET FREQUENCY (Hz)
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 On-line at www.hittite.com
10 - 8
HMC431LP4
/
431LP4E
v04.1106
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 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
ESD Sensitivity (HBM)
+3.5 Vdc
0 to +11V
135 °C
565 W
-65 to +150 °C
-40 to +85 °C
Class 1A
Typical Supply Current vs. Vcc
Vcc (V)
2.75
3.0
3.25
Icc (mA)
19
27
34
Note: VCO will operate over full voltage range shown above.
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
10
VCO
S
& PLOs - SMT
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOT FOR SUGGESTED
LAND PATTERN.
Package Information
Part Number
HMC431LP4
HMC431LP4E
Package Body Material
Low Stress Injection Molded Plastic
RoHS-compliant Low Stress Injection Molded Plastic
Lead Finish
Sn/Pb Solder
100% matte Sn
MSL Rating
MSL1
MSL1
[1]
Package Marking
[3]
H431
XXXX
H431
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
10 - 86
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 On-line at www.hittite.com
HMC431LP4
/
431LP4E
v04.1106
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 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
10
VCO
S
& PLOs - SMT
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:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
10 - 8
HMC431LP4
/
431LP4E
v04.1106
MMIC VCO w/ BUFFER
AMPLIFIER, 5.5 - 6.1 GHz
Evaluation PCB
10
VCO
S
& PLOs - SMT
List of Materials for Evaluation PCB 105706
[1]
Item
J1 - J2
J3 - J4
C1
C2
U1
PCB
[2]
Description
PCB Mount SMA RF Connector
DC Pin
4.7 μF Tantalum Capacitor
10,000 pF Capacitor, 0603 Pkg.
HMC431LP4 / HMC431LP4E VCO
105667 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
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 con-
nected 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.
10 - 88
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 On-line at www.hittite.com
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