HMC385LP4 / 385LP4E
v02.0705
MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz
Features
Pout: +4.5 dBm Phase Noise: -115 dBc/Hz @100 KHz No External Resonator Needed Single Supply: 3V @ 35 mA QFN Leadless SMT Package, 16 mm2
Typical Applications
Low noise MMIC VCO w/Buffer Amplifier for: • Wireless Infrastructure • Industrial Controls • Test Equipment • Military
Functional Diagram
General Description
The HMC385LP4 & HMC385LP4E are GaAs InGaP Heterojunction Bipolar Transistor (HBT) MMIC VCOs with integrated resonators, negative resistance devices, varactor diodes, and buffer amplifiers. Covering 2.25 to 2.5 GHz, the VCO’s phase noise performance is excellent over temperature, shock, vibration and process due to the oscillator’s monolithic structure. Power output is 4.5 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.
11
VCOS & PLOs - SMT
Electrical Specifi cations, TA = +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 9 -7 -23 2.0 -2 0.25 0 35 10 1.5 Min. Typ. 2.25 - 2.5 4.5 -115 10 Max. Units GHz dBm dBc/Hz V mA μA dB dBc dBc MHz pp MHz/V MHz/°C
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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
HMC385LP4 / 385LP4E
v02.0705
MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz
Frequency vs. Tuning Voltage, Vcc= +3V
2.6 OUTPUT FREQUENCY (GHz) 2.5 2.4 2.3 2.2 2.1 2
+25 C +85 C -40 C
Frequency vs. Tuning Voltage, T= 25°C
2.6 OUTPUT FREQUENCY (GHz) 2.5 2.4 2.3 2.2 2.1 2 0 1 2 3 4 5 6 7 8 9 10 TUNING VOLTAGE (VOLTS)
Vcc=2.75V Vcc=3.0V Vcc=3.25V
0
1
2
3
4
5
6
7
8
9
10
TUNING VOLTAGE (VOLTS)
11
VCOS & PLOs - SMT
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Sensitivity vs. Tuning Voltage, Vcc= +3V
180 160 SENSITIVITY (MHz/VOLT) 140 120 100 80 60 40 20 0 0 1 2 3 4 5 6 7 8 9 10 TUNING VOLTAGE (VOLTS)
+25 C +85 C -40 C
Output Power vs. Tuning Voltage, Vcc= +3V
8 7 OUTPUT POWER (dBm) 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 10 TUNING VOLTAGE (VOLTS)
+25 C +85 C -40 C
Phase Noise vs. Tuning Voltage
-80 SSB PHASE NOISE (dBc/Hz) -85
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)
-90 -95 -100 -105 -110 -115 -120 0 1 2 3 4 5 6 7 8 9 10 TUNING VOLTAGE (VOLTS)
10 KHz Offset 100 KHz 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
HMC385LP4 / 385LP4E
v02.0705
MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz
Typical Supply Current vs. Vcc
Vcc (V) 2.75 3.0 3.25 Icc (mA) 28 35 41
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 -65 to +150 °C -40 to +85 °C
Note: VCO will operate over full voltage range shown above.
ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS
11
VCOS & 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 SOLERED TO PCB RF GROUND. 7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED PCB LAND PATTERN
Package Information
Part Number HMC385LP4 HMC385LP4E 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] H385 XXXX H385 XXXX
[2]
[1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX
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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
HMC385LP4 / 385LP4E
v02.0705
MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 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
11
VCOS & PLOs - SMT
11 - 17
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
HMC385LP4 / 385LP4E
v02.0705
MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz
Evaluation PCB
11
VCOS & 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. HMC385LP4 / HMC385LP4E 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 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 available from Hittite upon request.
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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
HMC385LP4 / 385LP4E
v02.0705
MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz
Notes:
11
VCOS & PLOs - SMT
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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