HMC258LM3 v01.1201 MIXERS - SUB-HARMONIC - SMT 8 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz Typical Applications Features The HMC258LM3 is ideal for: Integrated LO Amplifier: 0 dBm Input • 14 and 20 GHz Microwave Radios Sub-Harmonically Pumped (x2) LO • Point to Point Radios High 2LO/RF Isolation: > 40 dB • VSAT and SATCOM LM3 SMT Package Functional Diagram General Description The HMC258LM3 is a 14 - 20 GHz surface mount sub-harmonically pumped (x2) MMIC mixer with an integrated LO amplifier in a SMT leadless chip carrier package. The 2LO to RF isolation is an excellent 40 dB, eliminating the need for additional filtering. The LO amplifier is a single bias (+5V) two stage design with only 0 dBm drive requirement. All data is with the non-hermetic, epoxy sealed LM3 packaged device mounted in a 50 ohm test fixture. Utilizing the HMC258LM3 eliminates the need for wirebonding, thereby providing a consistent connection interface for the customer. Electrical Specifi cations, TA = +25° C, LO Drive = 0 dBm IF = 1 GHz Vdd = +5.0V Parameter Min. Typ. Units Max. Frequency Range, RF 14 - 20 GHz Frequency Range, LO 7 - 10.5 GHz Frequency Range, IF DC - 3 GHz Conversion Loss 10 14 dB Noise Figure (SSB) 10 14 dB 2LO to RF Isolation 33 40 2LO to IF Isolation 33 45 dB IP3 (Input) 0 7 dBm 1 dB Compression (Input) -5 0 dBm 50 mA Supply Current (Idd) *Unless otherwise noted, all measurements performed as downconverter, IF= 1 GHz. 8-8 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 dB HMC258LM3 v01.1201 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz Conversion Gain vs. LO Drive 0 0 -5 -5 -10 -15 +25C -40C +85C -20 -25 LO = -4dBm +25C LO = -2dBm +25C LO = 0 dBm +25C LO = +2dBm +25C LO = +4dBm +25C 8 -10 -15 -20 -25 13 14 15 16 17 18 19 20 21 13 14 15 RF FREQUENCY (GHz) 16 17 18 19 20 21 RF FREQUENCY (GHz) Isolation @ LO = 0 dBm RF & LO Return Loss @ LO = 0 dBm 0 10 RETURN LOSS (dB) ISOLATION (dB) 0 -10 RF/IF LO/IF LO/RF -20 2LO/RF 2LO/IF -30 -40 -10 -20 LO RF -30 -50 -60 -40 13 14 15 16 17 18 19 20 21 0 5 RF FREQUENCY (GHz) IF Bandwidth @ LO = 0 dBm 15 20 25 IF Return Loss @ LO = 0 dBm 0 0 -5 RETURN LOSS (dB) IF CONVERSION GAIN (dB) 10 FREQUENCY (GHz) MIXERS - SUB-HARMONIC - SMT CONVERSION GAIN (dB) CONVERSION GAIN (dB) Conversion Gain vs. Temperature @ LO = 0 dBm -10 -15 -10 -20 -30 -20 -25 -40 0 1 2 3 4 IF FREQUENCY (GHz) 5 6 0 1 2 3 4 5 6 IF FREQUENCY (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 8-9 HMC258LM3 v01.1201 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz Input IP2 vs. LO Drive * 60 15 50 INPUT IP2 (dBm) 20 10 5 0 -2 dBm 0 dBm +2 dBm -5 40 30 20 -2 dBm 0 dBm +2 dBm 10 0 -10 13 15 17 19 21 13 23 15 17 19 21 Upconverter Performance Conversion Gain @ LO = 0 dBm Input P1dB 0 4 -5 CONVERSION GAIN (dB) 6 2 0 -2 -4 -10 -15 -20 -25 14 15 16 17 18 19 20 21 22 RF FREQUENCY (GHz) 13 14 15 16 17 18 19 RF FREQUENCY (GHz) MxN Spurious Outputs@ LO = 0 dBm nLO mRF ±5 ±4 ±3 26 50 58 15 ±2 ±1 34 -16 0 -3 -2 45 -1 69 0 1 2 3 51 74 35 68 X 52 9 82 54 68 82 RF = 18 GHz @ -10 dBm LO = 8.5 GHz @ 0 dBm All values in dBc below IF power level. * Two-tone input power = -10 dBm each tone, 1 MHz spacing. 8 - 10 23 RF FREQUENCY (GHz) RF FREQUENCY (GHz) INPUT P1dB (dBm) MIXERS - SUB-HARMONIC - SMT 8 INPUT IP3 (dBm) Input IP3 vs. LO Drive * 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 20 21 HMC258LM3 v01.1201 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz Absolute Maximum Ratings RF / IF Input (Vdd = +5V) +13 dBm LO Drive (Vdd = +5V) +13 dBm Vdd +5.5V Continous Pdiss (Ta = 85 °C) (derate 4.28 mW/°C above 85 °C) 386 mW Storage Temperature -65 to +150 °C Operating Temperature -40 to +85 °C ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Outline Drawing MIXERS - SUB-HARMONIC - SMT 8 NOTES: 1. MATERIAL: PLASTIC 2. PLATING: GOLD OVER NICKEL 3. DIMENSIONS ARE IN INCHES [MILLIMETERS]. 4. ALL TOLERANCES ARE ± 0.005 [± 0.13]. 5. ALL GROUNDS MUST BE SOLDERED TO PCB RF GROUND. 6. • INDICATES PIN 1 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 8 - 11 HMC258LM3 v01.1201 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz Pin Description MIXERS - SUB-HARMONIC - SMT 8 8 - 12 Pin Number Function Description 1, 2 N/C This pin may be connected to the housing ground or left unconnected. 3 Vdd Power Supply for the LO Amplifier. An external RF bypass capacitor of 100 - 330 pF is required as close to the package as possible. 4 IF IF Port. This pin is DC coupled and should be DC blocked externally using a series capacitor whose value has been chosen to pass the necessary IF frequency range. Any applied DC voltage to this pin will result in die non-function and possible die failure. 5 RF RF Port. This pin is AC coupled and matched to 50 Ohm from 4 - 20 GHz. 6 LO LO Port. This pin is AC coupled and matched to 50 Ohm from 7 - 10 GHz. 7 GND Must be soldered to PCB RF ground. 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 HMC258LM3 v01.1201 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz Evaluation PCB The grounded Co-Planar Wave Guide (CPWG) PCB input/output transitions allow use of Ground-Signal-Ground (GSG) probes for testing. Suggested probe pitch is 400mm (16 mils). Alternatively, the board can be mounted in a metal housing with 2.4 mm coaxial connectors. Evalution Circuit Board Layout Design Details Layout Technique Micro Strip to CPWG Material Rogers 4003 with 1/2 oz. Cu Dielectric Thickness 0.008” (0.20 mm) Microstrip Line Width 0.018” (0.46 mm) CPWG Line Width 0.016” (0.41 mm) CPWG Line to GND Gap 0.005” (0.13 mm) Ground Via Hole Diameter 0.008” (0.20 mm) C1 100 pF Capacitor, 0402 Pkg. MIXERS - SUB-HARMONIC - SMT 8 LM3 package mounted to evaluation PCB 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 8 - 13 HMC258LM3 v01.1201 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz Suggested LM3-02 PCB Land Pattern Tolerance: ± 0.003” (± 0.08 mm) MIXERS - SUB-HARMONIC - SMT 8 8 - 14 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 HMC258LM3 v01.1201 GaAs MMIC SUB-HARMONIC SMT MIXER, 14 - 20 GHz HMC258LM3 Recommended SMT Attachment Technique Preparation & Handling of the LM3 Millimeterwave Package for Surface Mounting Cleanliness: Observe proper handling procedures to ensure clean devices and PCBs. LM3 devices should remain in their original packaging until component placement to ensure no contamination or damage to RF, DC & ground contact areas. 8 200 0 175 150 125 100 75 50 25 0 1 2 3 4 5 TIME (min) 6 7 8 Static Sensitivity: Follow ESD precautions to protect against ESD strikes. General Handling: Handle the LM3 package on the top with a vacuum collet or along the edges with a sharp pair of bent tweezers. Avoiding damaging the RF, DC, & ground contacts on the package bottom. Do not apply excess pressure to the top of the lid. Solder Materials & Temperature Profile: Follow the information contained in the application note. Hand soldering is not recommended. Conductive epoxy attachment is not recommended. Solder Paste Solder paste should be selected based on the user’s experience and be compatible with the metallization systems used. See the LM3 data sheet Outline drawing for pin & ground contact metallization schemes. Solder Paste Application Solder paste is generally applied to the PCB using either a stencil printer or dot placement. The volume of solder paste will be dependent on PCB and component layout and should be controlled to ensure consistent mechanical & electrical performance. Excess solder may create unwanted electrical parasitics at high frequencies. Solder Reflow MIXERS - SUB-HARMONIC - SMT Follow these precautions to avoid permanent damage: 225 TEMPERATURE ( C) The HMC LM3 package was designed to be compatible with high volume surface mount PCB assembly processes. The LM3 package requires a specific mounting pattern to allow proper mechanical attachment and to optimize electrical performance at millimeterwave frequencies. This PCB layout pattern can be found on each LM3 product data sheet. It can also be provided as an electronic drawing upon request from Hittite Sales & Application Engineering. The soldering process is usually accomplished in a reflow oven but may also use a vapor phase process. A solder reflow profile is suggested above. Prior to reflowing product, temperature profiles should be measured using the same mass as the actual assemblies. The thermocouple should be moved to various positions on the board to account for edge and corner effects and varying component masses. The final profile should be determined by mounting the thermocouple to the PCB at the location of the device. Follow solder paste and oven vendor’s recommendations when developing a solder reflow profile. A standard profile will have a steady ramp up from room temperature to the pre-heat temperature to avoid damage due to thermal shock. Allow enough time between reaching pre-heat temperature and reflow for the solvent in the paste to evaporate and the flux to completely activate. Reflow must then occur prior to the flux being completely driven off. The duration of peak reflow temperature should not exceed 15 seconds. Packages have been qualified to withstand a peak temperature of 235°C for 15 seconds. Verify that the profile will not expose device to temperatures in excess of 235°C. Cleaning A water-based flux wash may be used. 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 8 - 15