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| HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 GHz Typical Applications The HMC283 is ideal for: * Millimeterwave Point-to-Point Radios Features High Gain: 21 dB Psat Output Power: +21 dBm Wideband Performance: 17 - 40 GHz Small Chip Size: 1.72 x 0.88 x 0.1 mm 3 LINEAR & POWER AMPLIFIERS - CHIP * VSAT * SATCOM Functional Diagram General Description The HMC283 chip is a four stage GaAs MMIC Medium Power Amplifier (MPA) which covers the frequency range of 17 to 40 GHz. The chip can easily be integrated into Multi-Chip Modules (MCMs) due to its small size. The chip utilizes a GaAs PHEMT process offering 21 dB gain and +21 dBm output power from a bias supply of +3.5V @ 300 mA. The HMC283 may be used as a frequency doubler. A B.I.T. (Built-In-Test) pad (Vdet) allows monitoring microwave output power. All data is with the chip in a 50 ohm test fixture connected via 0.076 x 0.0127mm (3mil x 0.5mil) ribbon bonds of minimal length 0.31mm (<12mils). Electrical Specifi cations, TA = +25 C, Vdd= +3.5V*, ldd = 300 mA Parameter Frequency Range Gain Gain Flatness (Any 1 GHz BW) Input Return Loss Output Return Loss Reverse Isolation Output Power for 1 dB Compression (P1dB) Saturated Output Power (Psat) Output Third Order Intercept (IP3) Noise Figure Supply Current (Idd)(Vdd = +3.5V, Vgg = -0.15V Typ.) 40 14 17 21 16 Min. Typ. 17 - 40 21 0.8 9 6 50 18 21 26 10 300 14 400 Max. Units GHz dB dB dB dB dB dBm dBm dBm dB mA *Vdd = Vdd1, 2, 3, 4 connected to +3.5V, adjusting Vgg = Vgg1, 2, 3, 4 between -2.0 to +0.4V to achieve Idd = 300 mA typical. 3-2 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 HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 GHz Broadband Gain & Return Loss 30 25 20 RESPONSE (dB) 15 Gain vs. Temperature 30 26 S11 S21 S22 GAIN (dB) 10 5 0 -5 -10 -15 -20 -25 0 10 20 FREQUENCY (GHz) 22 3 +25C -55C +85C 18 14 10 30 40 10 15 20 25 30 35 40 FREQUENCY (GHz) Reverse Isolation vs. Temperature 0 -10 Input Return Loss vs. Temperature 0 -4 ISOLATION (dB) -20 -30 -55 C -40 -50 -60 +25 C -70 10 15 20 25 30 35 40 FREQUENCY (GHz) -20 10 15 20 25 30 35 40 FREQUENCY (GHz) +85 C RETURN LOSS (dB) -8 -12 +25C -55C +85C -16 Noise Figure vs. Temperature 14 12 Output Return Loss vs. Temperature 0 -4 NOISE FIGURE (dB) 10 8 6 4 2 0 10 15 20 25 30 35 40 FREQUENCY (GHz) -20 10 15 20 25 30 35 40 FREQUENCY (GHz) RETURN LOSS (dB) -8 +25 C -55 C +85 C +25 C -55 C +85 C -12 -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 3-3 LINEAR & POWER AMPLIFIERS - CHIP HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 GHz Output P1dB vs. Temperature 23 +25 C -55 C +85 C Power Compression @ 20 GHz 24 Pout (dBm), GAIN (dB), PAE (%) 20 16 12 8 4 0 -10 +25 C -55 C +85 C 21 P1dB (dBm) 3 LINEAR & POWER AMPLIFIERS - CHIP 19 17 15 13 16 20 24 28 32 36 40 -8 -6 -4 -2 0 2 4 6 8 10 FREQUENCY (GHz) INPUT POWER (dBm) Output Psat vs. Temperature 25 Power Compression @ 28 GHz 24 Pout (dBm), GAIN (dB), PAE (%) 20 16 12 8 4 0 -10 +25 C -55 C +85 C 23 Psat (dBm) 21 19 +25C -55C +85C 17 15 16 20 24 28 32 36 40 -8 -6 -4 -2 0 2 4 6 8 10 FREQUENCY (GHz) INPUT POWER (dBm) Output IP3 vs. Temperature Frequency (GHz) Temperature -55 C +25 C +85 C All levels in dBm 20 25.6 27.5 27 28 25.4 25.9 24.4 38 28.6 27.1 25.7 Power Compression @ 39 GHz 24 Pout (dBm), GAIN (dB), PAE (%) 22 20 18 16 14 12 10 8 6 4 2 0 -10 -8 -6 -4 -2 0 2 4 6 8 10 +25 C -55 C +85 C INPUT POWER (dBm) 3-4 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 HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 GHz Absolute Maximum Ratings Drain Bias Voltage (Vdd1, Vdd2, Vdd3, Vdd4) Drain Bias Current (Idd) Gate Bias Voltage (Vgg1, Vgg2, Vgg3, Vgg4) Gate Bias Current (Igg) RF Input Power (RFIN)(Vdd = +3.5 Vdc) Channel Temperature Continuous Pdiss (T = 85 C) (derate 13.04 mW/C above 85 C) Thermal Resistance (channel to die bottom) Storage Temperature Operating Temperature +5Vdc 400 mA -2 to +0.4Vdc 4 mA ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS 3 LINEAR & POWER AMPLIFIERS - CHIP NOTES: 1. ALL DIMENSIONS ARE IN INCHES [MM] 2. DIE THICKNESS IS .004" 3. TYPICAL BOND IS .004" SQUARE 4. BACKSIDE METALLIZATION: GOLD 5. BOND PAD METALLIZATION: GOLD 6. BACKSIDE METAL IS GROUND. 7. CONNECTION NOT REQUIRED FOR UNLABELED BOND PADS. +8 dBm 175 C 1.174 W 76.7 C/W -65 to +150 C -55 to +85 C Outline Drawing Die Packaging Information [1] Standard GP-2 Alternate [2] [1] Refer to the "Packaging Information" section for die packaging dimensions. [2] For alternate packaging information contact Hittite Microwave Corporation. 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 3-5 HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 GHz Pin Descriptions Pin Number 1 Function RFIN Pin Description This pad is AC coupled and matched to 50 Ohms. Power Supply Voltage for the amplifier. External bypass caps of 100pF and 0.1 F are required. Interface Schematic 2 Vdd1 3 3, 10 Vgg2 LINEAR & POWER AMPLIFIERS - CHIP Gate Control for amplifier. Adjust Vgg ( = Vgg1, Vgg2, Vgg3, Vgg4) to acheive Idd = 300mA. External bypass caps of 100pF and 0.1 F are required. 4, 5 Vdd2, 3. 4 Power Supply Voltage for the amplifier. External bypass caps of 100pF and 0.1 F are required. This pad is AC coupled and matched to 50 Ohms. Output power verification pad. 6 RFOUT VDET 7 8 Vgg4 Gate Control for amplifier. Adjust Vgg ( = Vgg1, Vgg2, Vgg3, Vgg4) to acheive Idd = 300mA. External bypass caps of 100pF and 0.1 F are required. 9 Vgg3 Gate Control for amplifier. Adjust Vgg ( = Vgg1, Vgg2, Vgg3, Vgg4) to acheive Idd = 300mA. External bypass caps of 100pF and 0.1 F are required. 11 Vgg1 Gate Control for amplifier. Adjust Vgg ( = Vgg1, Vgg2, Vgg3, Vgg4) to acheive Idd = 300mA. External bypass caps of 100pF and 0.1 F are required. 3-6 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 HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 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 brought as close to the die as possible in order to minimize bond wire length. Typical die-to-substrate spacing is 0.076mm to 0.152 mm (3 to 6 mils). RF bypass capacitors should be used on the Vdd & Vgg inputs. 100pF single layer capacitors (mounted eutectically or by conductive epoxy) placed no further than 0.762 mm (30 mils) from the chip are recommended. The photo in figure 3 shows a typical assembly for the HMC283 MMIC chip. 0.102mm (0.004") Thick GaAs MMIC Ribbon Bond 0.076mm (0.003") 3 RF Ground Plane 0.127mm (0.005") Thick Alumina Thin Film Substrate Figure 1. 0.102mm (0.004") Thick GaAs MMIC Ribbon Bond 0.076mm (0.003") RF Ground Plane 0.150mm (0.005") Thick Moly Tab 0.254mm (0.010") Thick Alumina Thin Film Substrate Figure 2. Figure 3: Typical HMC283 Assembly 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. 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 3-7 LINEAR & POWER AMPLIFIERS - CHIP HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 GHz 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. 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. 3 LINEAR & POWER AMPLIFIERS - CHIP Wire Bonding Ball or wedge bond with 0.025mm (1 mil) diameter pure gold wire (DC Bias) or ribbon bond (RF ports) 0.076mm x 0.013mm (3 mil x 0.5 mil) size 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 <0.31mm (12 mils). HMC283 Alternate Applications: HMC283 Frequency Multiplier Performance HMC283 can also perform as a frequency multiplier. This is accomplished by biasing Vgg1 into its pinchoff region - typically -1V to -2V. By adjusting the Vg1 bias, the device will operate as a doubler or tripler. Vgg2 may also be adjusted to minimize the levels of unwanted harmonics. The plot shows the performance of HMC283 operated as a doubler with Vgg1= -1V and the remaining gate voltages (Vgg2, 3, 4) set to -0.15V. In this condition the amplifier draws 310mA at 3.5V drain bias (Vdd) and provides +5dB to -5dB conversion loss dependent upon the output frequency. CONVERSION LOSS (dB) 5 2 -1 -4 +10 dBm +15 dBm +18 dBm -7 -10 10 15 20 25 30 35 40 OUTPUT FREQUENCY (GHz) HMC283 Voltage Detector, Built-In-Test (B.I.T.) By connecting the Vdet port to a 10K Ohm resistor and monitoring the voltage, a B.I.T. circuit can be created to monitor changes in the device output power. This circuit is extremely well compensated for temperature variations as shown in the first plot. The detected voltage does change with frequency and the second plot shows its variation. 1.6 DETECTED VOLTAGE INTO 10K RESISTOR (Volts) DETECTED VOLTAGE INTO 10K RESISTOR (Volts) 1.4 1.2 1 0.8 0.6 0.4 0.2 0 10 12 14 16 18 20 22 +85 C -55 C +25 C 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 10 12 14 16 18 20 22 18 GHz 28 GHz 22 GHz 38 GHz 3-8 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 HMC283 v03.1007 GaAs MMIC MEDIUM POWER AMPLIFIER, 17 - 40 GHz Notes: 3 LINEAR & POWER AMPLIFIERS - CHIP 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 3-9 |
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