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For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
VCOS with Fo/2 OUTPUT - SMT
8
8 - 1
HMC508LP5 / 508LP5E
MMIC VCO w/ HALF FREQUENCY
OUTPUT 7.3 - 8.2 GHz
v04.0811
General Description
Features
Functional Diagram
The HMC508LP5 & HMC508LP5E are GaAs InGaP
Heterojunction Bipolar Transistor (HBT) MMIC
VCOs. The HMC508LP5 & HMC508LP5E integrate
resonators, negative resistance devices, varactor
diodes and feature a half frequency output. The VCO’s
phase noise performance is excellent over temper-
ature, shock, and process due to the oscillator’s
monolithic structure. Power output is +15 dBm typical
from a +5V supply. The voltage controlled oscillator
is packaged in a leadless QFN 5x5 mm surface
mount package, and requires no external matching
components.
Dual Output: Fo = 7.3 - 8.2 GHz
Fo/2 = 3.65 - 4.1 GHz
Pout: +15.0 dBm
Phase Noise: -116 dBc/Hz @100 kHz Typ.
No External Resonator Needed
32 Lead 5x5mm SMT Package: 25mm²
Typical Applications
Low noise MMIC VCO w/Half Frequency, for:
• VSAT Radio
• Point to Point/Multi-Point Radio
• Test Equipment & Industrial Controls
• Military End-Use
Electrical Specications, TA = +25° C, Vcc = +5V
Parameter Min. Typ. Max. Units
Frequency Range Fo
Fo/2
7.3 - 8.2
3.65 - 4.1
GHz
GHz
Power Output RFOUT
RFOUT/2
+12
+4
+17
+10
dBm
dBm
SSB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RFOUT -116 dBc/Hz
Tune Voltage Vtune 2 13 V
Supply Current (Icc) (Vcc = +5.0V) 200 240 280 mA
Tune Port Leakage Current (Vtune= 13V) 10 µA
Output Return Loss 2 dB
Harmonics/Subharmonics 1/2
2nd
3rd
40
20
35
dBc
dBc
dBc
Pulling (into a 2.0:1 VSWR) 8 MHz pp
Pushing @ Vtune= 5V 10 MHz/V
Frequency Drift Rate 1.0 MHz/°C
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
VCOS with Fo/2 OUTPUT - SMT
8
8 - 2
Frequency vs. Tuning Voltage, T= 25°C
Sensitivity vs. Tuning Voltage, Vcc= +5V
SSB Phase Noise @ Vtune = +5V
Frequency vs. Tuning Voltage, Vcc= +5V
Output Power
vs. Tuning Voltage, Vcc= +5V
6
6.5
7
7.5
8
8.5
9
0 1 2 3 4 5 6 7 8 9 10 11 12 13
Vcc=4.75V
Vcc=5.0V
Vcc=5.25V
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (VOLTS)
0
4
8
12
16
20
0 1 2 3 4 5 6 7 8 9 10 11 12 13
+25 C
+85 C
-40 C
OUTPUT POWER (dBm)
TUNING VOLTAGE (VOLTS)
0
100
200
300
400
500
600
0 1 2 3 4 5 6 7 8 9 10 11 12 13
+25 C
+85 C
-40 C
SENSITIVITY (MHz/V)
TUNING VOLTAGE (VOLTS)
-160
-140
-120
-100
-80
-60
-40
-20
0
102103104105106
+25 C
+85 C
-40 C
SSB PHASE NOISE (dBc/Hz)
OFFSET FREQUENCY (Hz)
6
6.5
7
7.5
8
8.5
9
0 1 2 3 4 5 6 7 8 9 10 11 12 13
+25 C
+85 C
-40 C
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (VOLTS)
SSB Phase Noise vs. Tuning Voltage
-130
-110
-90
-70
-50
-30
-10
1 2 3 4 5 6 7 8 9 10 11 12 13
10kHz offset
100kHz offset
SSB PHASE NOISE (dBc/Hz)
TUNING VOLTAGE (VOLTS)
HMC508LP5 / 508LP5E
v04.0811
MMIC VCO w/ HALF FREQUENCY
OUTPUT 7.3 - 8.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
VCOS with Fo/2 OUTPUT - SMT
8
8 - 3
Absolute Maximum Ratings
Vcc +5.5 Vdc
Vtune 0 to +15V
Junction Temperature 135 °C
Continuous Pdiss (T=85 °C)
(derate 28 mW/C above 85 °C 1.4 W
Thermal Resistance
(junction to ground paddle) 35 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
Typical Supply Current vs. Vcc
Note: VCO will operate over full voltage range shown above.
Vcc (V) Icc (mA)
4.75 220
5.0 240
5.25 260
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
RFOUT/2 Frequency
vs. Tuning Voltage, Vcc= +5V
RFOUT/2 Output Power
vs. Tuning Voltage, Vcc= +5V
0
2
4
6
8
10
12
0 1 2 3 4 5 6 7 8 9 10 11 12 13
+25 C
+85 C
-40 C
OUTPUT POWER (dBm)
TUNING VOLTAGE (VOLTS)
3
3.25
3.5
3.75
4
4.25
4.5
0 1 2 3 4 5 6 7 8 9 10 11 12 13
+25 C
+85 C
-40 C
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (VOLTS)
HMC508LP5 / 508LP5E
v04.0811
MMIC VCO w/ HALF FREQUENCY
OUTPUT 7.3 - 8.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
VCOS with Fo/2 OUTPUT - SMT
8
8 - 4
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 NOTE FOR SUGGESTED
LAND PATTERN.
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC508LP5 Low Stress Injection Molded Plastic Sn/Pb Solder MSL3 [1] H508
XXXX
HMC508LP5E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL3 [2] H508
XXXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
HMC508LP5 / 508LP5E
v04.0811
MMIC VCO w/ HALF FREQUENCY
OUTPUT 7.3 - 8.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
VCOS with Fo/2 OUTPUT - SMT
8
8 - 5
Pin Number Function Description Interface Schematic
1 - 4, 6 - 10,
13 - 18, 20, 22 -
28, 30 - 32
N/C No Connection. These pins may be connected to RF/
DC ground. Performance will not be affected.
12 RFOUT/2 Half frequency output (AC coupled).
19 RFOUT RF output (AC coupled).
21 Vcc Supply Voltage, +5V
29 VTUNE Control Voltage Input. Modulation port bandwidth
dependent on drive source impedance.
5, 11, Paddle GND Package bottom has an exposed metal paddle
that must be connected to RF/DC ground.
Pin Descriptions
HMC508LP5 / 508LP5E
v04.0811
MMIC VCO w/ HALF FREQUENCY
OUTPUT 7.3 - 8.2 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
VCOS with Fo/2 OUTPUT - SMT
8
8 - 6
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 backside ground 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.
Evaluation PCB
List of Materials for Evaluation PCB 110227 [1]
HMC508LP5 / 508LP5E
v04.0811
MMIC VCO w/ HALF FREQUENCY
OUTPUT 7.3 - 8.2 GHz
Item Description
J1 - J4 PCB Mount SMA RF Connector
J5 2 mm DC Header
C1 - C3 100 pF Capacitor, 0402 Pkg.
C4 1,000 pF Capacitor, 0402 Pkg.
C5 - C7 2.2 µF Tantalum Capacitor
U1 HMC508LP5(E) VCO
PCB [2] 110225 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR
