HMC385LP4 / 385LP4E v02.0705 MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz Typical Applications Features Low noise MMIC VCO w/Buffer Amplifier for: Pout: +4.5 dBm • Wireless Infrastructure Phase Noise: -115 dBc/Hz @100 KHz • Industrial Controls No External Resonator Needed • Test Equipment Single Supply: 3V @ 35 mA • Military QFN Leadless SMT Package, 16 mm2 Functional Diagram General Description 11 VCOS & PLOs - SMT 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. Electrical Specifi cations, TA = +25° C, Vcc = +3V Parameter Min. Frequency Range Power Output 1.5 SSB Phase Noise @ 100 kHz Offset, Vtune= +5V @ RF Output Tune Voltage (Vtune) Supply Current (Icc) (Vcc = +3.0V) Typ. GHz dBm -115 0 dBc/Hz 10 35 V mA 10 μA 9 dB Harmonics 2nd 3rd -7 -23 dBc dBc Pulling (into a 2.0:1 VSWR) 2.0 MHz pp Pushing @ Vtune= +5V -2 MHz/V 0.25 MHz/°C Frequency Drift Rate 11 - 14 Units 4.5 Tune Port Leakage Current Output Return Loss Max. 2.25 - 2.5 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, T= 25°C Frequency vs. Tuning Voltage, Vcc= +3V 2.6 OUTPUT FREQUENCY (GHz) 2.5 2.4 2.3 2.2 Vcc=2.75V Vcc=3.0V Vcc=3.25V 2.1 2.5 2.4 2.3 2.2 +25 C +85 C -40 C 2.1 2 2 0 1 2 3 4 5 6 7 8 9 10 0 1 2 TUNING VOLTAGE (VOLTS) 180 8 160 7 140 +25 C +85 C -40 C 100 80 60 40 5 6 7 8 9 10 11 6 5 4 3 +25 C +85 C -40 C 2 1 20 0 0 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 TUNING VOLTAGE (VOLTS) SSB PHASE NOISE (dBc/Hz) -85 -90 -95 10 KHz Offset 100 KHz Offset -105 -110 -115 -120 0 1 2 3 4 5 6 7 TUNING VOLTAGE (VOLTS) 5 6 7 8 9 10 Typical SSB Phase Noise @ Vtune= +5V -80 -100 4 TUNING VOLTAGE (VOLTS) Phase Noise vs. Tuning Voltage SSB PHASE NOISE (dBc/Hz) 4 Output Power vs. Tuning Voltage, Vcc= +3V OUTPUT POWER (dBm) SENSITIVITY (MHz/VOLT) Sensitivity vs. Tuning Voltage, Vcc= +3V 120 3 TUNING VOLTAGE (VOLTS) VCOS & PLOs - SMT OUTPUT FREQUENCY (GHz) 2.6 8 9 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 3 10 +25 C +85 C -40 C 4 10 5 10 6 10 7 10 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 11 - 15 HMC385LP4 / 385LP4E v02.0705 MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz Absolute Maximum Ratings Typical Supply Current vs. Vcc Vcc +3.5 Vdc Vcc (V) Vtune 0 to +11V 2.75 Icc (mA) 28 Channel Temperature 135 °C 3.0 35 Continuous Pdiss (T = 85°C) (derate 6.28 mW/°C above 85°C) 565 W 3.25 41 Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C Note: VCO will operate over full voltage range shown above. ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing VCOS & PLOs - SMT 11 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 Package Body Material Lead Finish MSL Rating HMC385LP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 HMC385LP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 Package Marking [3] [1] H385 XXXX [2] H385 XXXX [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX 11 - 16 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 Function Description 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. Interface Schematic 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 11 VCOS & PLOs - SMT Pin Number 11 - 17 HMC385LP4 / 385LP4E v02.0705 MMIC VCO w/ BUFFER AMPLIFIER, 2.25 - 2.5 GHz Evaluation PCB VCOS & PLOs - SMT 11 List of Materials for Evaluation PCB 105706 [1] 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 HMC385LP4 / HMC385LP4E VCO PCB [2] 105667 Eval Board [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Rogers 4350 11 - 18 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. 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: VCOS & PLOs - SMT 11 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 11 - 19