HMC620

HMC620 v01.1007 GaAs MMIC I/Q MIXER 3 - 7 GHz Typical Applications The HMC620 is ideal for: • Point-to-Point Radios Features Wide IF Bandwidth: DC - 3.5 GHz High Image Rejection: 33 dB High LO to RF Isolation: 45 dB High Input IP3: +23 dB Die Size: 1.49 x 1.15 x 0.10 mm 3 MIXERS - I/Q MIXERS / IRM - CHIP • Point-to-Multi-Point Radios • WiMAX & Fixed Wireless • VSAT Functional Diagram General Description The HMC620 is a compact I/Q MMIC mixer which can be used as either an Image Reject Mixer (IRM) or a Single Sideband Upconverter. The chip utilizes two standard Hittite double balanced mixer cells and a 90 degree hybrid fabricated in a GaAs MESFET process. All data shown below is taken with the chip mounted in a 50 Ohm test fixture and includes the effects of 1 mil diameter x 20 mil length bond wires on each port. A low frequency quadrature hybrid was used to produce a 100 MHz upper side band (USB) IF output. This product is a much smaller and more consistent alternative to hybrid style Image Reject Mixers and Single Sideband Upconverter assemblies. Electrical Specifi cations, TA = +25° C, IF= 100 MHz, LO = +15 dBm* Parameter Frequency Range, RF/LO Frequency Range, IF Conversion Loss (As IRM) Image Rejection 1 dB Compression (Input) LO to RF Isolation LO to IF Isolation IP3 (Input) Amplitude Balance Phase Balance 35 35 25 Min. Typ. 3.0 - 7.0 DC - 3.5 7.5 28 +13 45 40 23 0.1 3 35 35 8.5 31 Max. Min. Typ. 4.5 - 6.5 DC - 3.5 7.5 33 +13 45 40 23 0.2 3 9 Max. Units GHz GHz dB dB dBm dB dB dBm dB Deg * Unless otherwise noted, all measurements performed as downconverter. 3 - 154 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 HMC620 v01.1007 GaAs MMIC I/Q MIXER 3 - 7 GHz Data taken As IRM With External IF 90˚ Hybrid Conversion Gain vs. Temperature 0 Image Rejection vs. Temperature 0 CONVERSION GAIN (dB) IMAGE REJECTION (dB) -5 -10 +25 C +85 C -55 C 3 MIXERS - I/Q MIXERS / IRM - CHIP 3 - 155 -10 -20 -15 +25 C +85 C -55 C -30 -20 2.5 3.5 4.5 5.5 6.5 7.5 -40 2.5 3.5 4.5 5.5 6.5 7.5 RF FREQUENCY (GHz) RF FREQUENCY (GHz) Conversion Gain vs. LO Drive 0 -5 Return Loss 0 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30 2.5 RF LO CONVERSION GAIN (dB) -10 -15 -20 -25 -30 2.5 +11 dBm +13 dBm +15 dBm +17 dBm 3.5 4.5 5.5 6.5 7.5 3.5 4.5 5.5 6.5 7.5 RF FREQUENCY (GHz) FREQUENCY (GHz) Input P1dB vs. Temperature 20 18 16 P1dB (dBm) 14 12 10 +25 C +85 C -55 C Input IP3 vs. LO Drive 30 25 IP3 (dBm) 20 15 LO = +11 dBm LO = +15 dBm LO = +19 dBm 10 8 6 2.5 5 2.5 3.5 4.5 5.5 6.5 7.5 3.5 4.5 5.5 6.5 7.5 RF FREQUENCY (GHz) RF 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 HMC620 v01.1007 GaAs MMIC I/Q MIXER 3 - 7 GHz Isolations -10 -20 IF Bandwidth* 0 -5 RESPONSE (dB) -10 -15 -20 -25 -30 0.5 CONVERSION GAIN RETURN LOSS ISOLATION (dB) 3 MIXERS - I/Q MIXERS / IRM - CHIP -30 -40 -50 -60 -70 -80 2.5 LO/RF RF/IF1 LO/IF1 RF/IF2 LO/IF2 3.5 4.5 5.5 6.5 7.5 1 1.5 2 2.5 3 3.5 RF FREQUENCY (GHz) IF FREQUENCY (GHz) Amplitude Balance vs. LO Drive 2 Phase Balance vs. LO Drive 10 5 0 -5 -10 -15 -20 2.5 LO = +13 dBm LO = +15 dBm LO = +17 dBm 1 LO = 13 dBm LO = 15 dBm LO = 17 dBm 0 -1 -2 2.5 3.5 4.5 5.5 6.5 7.5 PHASE BALANCE (degrees) AMPLITUDE BALANCE (dB) 3.5 4.5 5.5 6.5 7.5 RF FREQUENCY (GHz) RF FREQUENCY (GHz) Upconverter Performance Conversion Gain vs. LO Drive 0 Upconverter Performance Sideband Rejection vs. LO Drive 0 SIDEBAND REJECTION (dBc) -10 -20 -30 -40 -50 -60 2.5 CONVERSION GAIN (dB) -5 LO = +13 dBm LO = +15 dBm LO = +17 dBm -10 -15 LO = +13 dBm LO = +15 dBm LO = +17 dBm -20 2.5 3.5 4.5 5.5 6.5 7.5 3.5 4.5 5.5 6.5 7.5 RF FREQUENCY (GHz) RF FREQUENCY (GHz) * Conversion gain data taken with external IF 90˚ hybrid 3 - 156 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 HMC620 v01.1007 GaAs MMIC I/Q MIXER 3 - 7 GHz Harmonics of LO nLO Spur at RF Port LO Freq. (GHz) 1 2.5 3 4 5 6 7 8 29 26 28 28 36 40 46 2 35 33 32 36 44 36 37 3 48 51 39 45 60 58 55 4 30 39 43 52 41 34 46 mRF 0 1 2 3 4 0 xx 15 69 95 95 1 1 0 67 95 95 2 15 30 78 95 95 3 28 39 60 73 95 4 69 50 71 95 95 MxN Spurious Outputs nLO 3 MIXERS - I/Q MIXERS / IRM - CHIP 3 - 157 LO = +15 dBm Values in dBc below input LO level measured at RF Port. RF = 5.6 GHz @ -10 dBm LO = 5.5 GHz @ +15 dBm Data taken without IF 90˚ hybrid All values in dBc with reference to output power at IF= 100 MHz Absolute Maximum Ratings RF / IF Input LO Drive Channel Temperature Continuous Pdiss (T=85°C) (derate 14.2 mW/°C above 85°C) Thermal Resistance (RTH) (channel to die bottom) Storage Temperature Operating Temperature +20 dBm +27 dBm 150 °C 925 mW ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS Die Packaging Information Standard WP-3 (Waffle Pack) [1] Alternate [2] 70.2 °C/W -65 to +150 °C -55 to +85 °C [1] Refer to the “Packaging Information” section for die packaging dimensions. [2] For alternate packaging information contact Hittite Microwave Corporation. NOTES: 1. ALL DIMENSIONS ARE IN INCHES [MM] 2. DIE THICKNESS IS .004” 3. TYPICAL BOND PAD IS .004” SQUARE 4. BACKSIDE METALIZATION: GOLD 5. BOND PAD METALIZATION: GOLD 6. BACKSIDE METAL IS GROUND 7. CONNECTION NOT REQUIRED FOR UNLABELED BOND PADS. 8. OVERALL DIE SIZE ±.002” Outline Drawing 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 HMC620 v01.1007 GaAs MMIC I/Q MIXER 3 - 7 GHz Pad Descriptions Pad Number Function Description Interface Schematic 3 MIXERS - I/Q MIXERS / IRM - CHIP 1 RF This pad is DC coupled and matched to 50 Ohms. 2 (5) IF2 3 (6) IF1 This pad is DC coupled. For applications not requiring operation to DC, this port should be DC blocked externally using a series capacitor whose value has been chosen to pass the necessary IF frequency range. For operation to DC, this pad must not source/sink more than 3mA of current or die nonfunction and possible die failure will result. Pads 5 and 6 are alternate IF ports. 4 LO This pad is DC coupled and matched to 50 Ohms. GND The backside of the die must be connected to RF/DC ground. Assembly Diagrams 3 - 158 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 HMC620 v01.1007 GaAs MMIC I/Q MIXER 3 - 7 GHz Mounting & Bonding Techniques for Millimeterwave GaAs MMICs The die should be attached directly to the ground plane eutectically or with conductive epoxy (see HMC general Handling, Mounting, Bonding Note). 50 Ohm Microstrip transmission lines on 0.127mm (5 mil) thick alumina thin film substrates are recommended for bringing RF to and from the chip (Figure 1). If 0.254mm (10 mil) thick alumina thin film substrates must be used, the die should be raised 0.150mm (6 mils) so that the surface of the die is coplanar with the surface of the substrate. One way to accomplish this is to attach the 0.102mm (4 mil) thick die to a 0.150mm (6 mil) thick molybdenum heat spreader (moly-tab) which is then attached to the ground plane (Figure 2). Microstrip substrates should be brought as close to the die as possible in order to minimize bond wire length. Typical die-to-substrate spacing is 0.076mm (3 mils). 0.102mm (0.004”) Thick GaAs MMIC Wire Bond 0.076mm (0.003”) 3 MIXERS - I/Q MIXERS / IRM - CHIP 3 - 159 RF Ground Plane Handling Precautions Follow these precautions to avoid permanent damage. Storage: All bare die are placed in either Waffle or Gel based ESD protective containers, and then sealed in an ESD protective bag for shipment. Once the sealed ESD protective bag has been opened, all die should be stored in a dry nitrogen environment. Cleanliness: Handle the chips in a clean environment. DO NOT attempt to clean the chip using liquid cleaning systems. Static Sensitivity: Follow ESD precautions to protect against ESD strikes. Transients: Suppress instrument and bias supply transients while bias is applied. Use shielded signal and bias cables to minimize inductive pick-up. General Handling: Handle the chip along the edges with a vacuum collet or with a sharp pair of bent tweezers. The surface of the chip has fragile air bridges and should not be touched with vacuum collet, tweezers, or fingers. 0.127mm (0.005”) Thick Alumina Thin Film Substrate Figure 1. 0.102mm (0.004”) Thick GaAs MMIC Wire Bond 0.076mm (0.003”) RF Ground Plane Mounting The chip is back-metallized and can be die mounted with AuSn eutectic preforms or with electrically conductive epoxy. The mounting surface should be clean and flat. 0.150mm (0.005”) Thick Moly Tab 0.254mm (0.010”) Thick Alumina Thin Film Substrate Figure 2. Eutectic Die Attach: A 80/20 gold tin preform is recommended with a work surface temperature of 255 °C and a tool temperature of 265 °C. When hot 90/10 nitrogen/hydrogen gas is applied, tool tip temperature should be 290 °C. DO NOT expose the chip to a temperature greater than 320 °C for more than 20 seconds. No more than 3 seconds of scrubbing should be required for attachment. Epoxy Die Attach: Apply a minimum amount of epoxy to the mounting surface so that a thin epoxy fillet is observed around the perimeter of the chip once it is placed into position. Cure epoxy per the manufacturer’s schedule. Wire Bonding Ball or wedge bond with 0.025 mm (1 mil) diameter pure gold wire is recommended. Thermosonic wirebonding with a nominal stage temperature of 150 °C and a ball bonding force of 40 to 50 grams or wedge bonding force of 18 to 22 grams is recommended. Use the minimum level of ultrasonic energy to achieve reliable wirebonds. Wirebonds should be started on the chip and terminated on the package or substrate. All bonds should be as short as possible