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
VCOS - SMT
12
12 - 14
MMIC VCO w/ BUFFER
AMPLIFIER, 2.6 - 2.8 GHz
v04.1209
General Description
Features
Functional Diagram
The HMC386LP4 & HMC386LP4E are GaAs InGaP
Heterojunction Bipolar Transistor (HBT) MMIC VCOs
with integrated resonators, negative resistance
devices, varactor diodes, and buffer ampli ers.
Covering 2.6 to 2.8 GHz, the VCO’s phase noise
performance is excellent over temperature, shock,
vibration and process due to the oscillator’s mono-
lithic structure. Power output is 5 dBm typical from a
single supply of 3V @ 35mA. The voltage controlled
oscillator is packaged in a low cost leadless QFN 4x4
mm surface mount package.
Pout: +5 dBm
Phase Noise: -114 dBc/Hz @100 kHz
No External Resonator Needed
Single Supply: 3V @ 35mA
24 Lead 4x4mm QFN Package: 16 mm
Typical Applications
Low noise MMIC VCO w/Buffer Ampli er for:
• Wireless Infrastructure
• Industrial Controls
• Test Equipment
• Military
Electrical Speci cations, TA = +25 °C, Vcc = +3V
Parameter Min. Typ. Max. Units
Frequency Range 2.6 - 2.8 GHz
Power Output 25 dBm
SSB Phase Noise @ 100 kHz Offset, Vtune = +5V @ RF Output -114 dBc/Hz
Tune Voltage (Vtune) 0 10 V
Supply Current (Icc) (Vcc = +3V) 35 mA
Tune Port Leakage Current 10 µA
Output Return Loss 9dB
Harmonics
2nd
3rd
-5
-15
dBc
dBc
Pulling (into a 2.0:1 VSWR) 3MHz pp
Pushing @ Vtune = +5V 2MHz/V
Frequency Drift Rate 0.3 MHz/°C
HMC386LP4 / 386LP4E
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
VCOS - SMT
12
12 - 15
Frequency vs. Tuning Voltage, T = 25°C
Sensitivity vs. Tuning Voltage, Vcc = +3V
Typical SSB Phase Noise @ Vtune= +5V
Phase Noise vs. Tuning Voltage
Frequency vs. Tuning Voltage, Vcc = +3V
Output Power vs.
Tuning Voltage, Vcc = +3V
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
012345678910
+25C
+85C
-40C
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (V)
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
012345678910
2.75V
3.00V
3.25V
OUTPUT FREQUENCY (GHz)
TUNING VOLTAGE (V)
0
20
40
60
80
100
120
140
160
180
200
012345678910
+25C
+85C
-40C
SENSITIVITY (MHz/VOLT)
TUNING VOLTAGE (V)
0
1
2
3
4
5
6
7
8
9
10
012345678910
+25C
+85C
-40C
OUTPUT POWER (dBm)
TUNING VOLTAGE (V)
-125
-120
-115
-110
-105
-100
-95
-90
-85
-80
012 345 678910
10kHz offset
100kHz offset
SSB PHASE NOISE (dBc/Hz)
TUNING VOLTAGE (V)
-150
-125
-100
-75
-50
-25
0
103104105106
+25C
+85C
-40C
SSB PHASE NOISE (dBc/Hz)
OFFSET FREQUENCY (Hz)
HMC386LP4 / 386LP4E
v04.1209
MMIC VCO w/ BUFFER
AMPLIFIER, 2.6 - 2.8 GHz
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
VCOS - SMT
12
12 - 16
Absolute Maximum Ratings
Outline Drawing
Vcc +3.5V
Vtune 0 to +11V
Channel Temperature 135 °C
Thermal Resistance (RTH)
(junction to package base) 138 °C/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 30
3.0 35
3.25 40
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.
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC386LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H386
XXXX
HMC386LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H386
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
HMC386LP4 / 386LP4E
v04.1209
MMIC VCO w/ BUFFER
AMPLIFIER, 2.6 - 2.8 GHz
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
VCOS - SMT
12
12 - 17
Pin Number Function Description Interface Schematic
1- 14, 17 - 19,
21, 23, 24 N/C
The pins are not connected internally; however, all data shown
herein was measured with these pins connected to RF/DC ground
externally.
15 GND This pin must be connected to RF & DC ground. Package bottom
has an exposed metal paddle that must be RF & DC grounded.
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.
Pin Descriptions
The circuit board used in the application should
use RF circuit design techniques. Signal lines
should have 50 Ohm impedance while the pack-
age 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 connect the top and bottom ground
planes. The evaluation circuit board shown is avail-
able from Hittite upon request.
Evaluation PCB
Item Description
J1 - J2 PCB Mount SMA RF Connector
J3 - J4 DC Pin
C1 4.7 µF Tantalum Capacitor
C2 10,000 pF Capacitor, 0603 Pkg.
U1 HMC386LP4 / HMC386LP4E VCO
PCB [2] 105667 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350 or Arlon 25FR
List of Materials for Evaluation PCB 105706 [1]
HMC386LP4 / 386LP4E
v04.1209
MMIC VCO w/ BUFFER
AMPLIFIER, 2.6 - 2.8 GHz
