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| 36.0-40.0 GHz GaAs MMIC Power Amplifier May 2006 - Rev 10-May-06 Velocium Products 18 - 20 GHz HPA - APH478 P1011 Chip Device Layout Features Excellent Linear Output Amplifier Stage 21.0 dB Small Signal Gain +36.0 dBm Third Order Intercept (OIP3) +27.0 dBm Output P1dB Compression Point 100% On-Wafer RF, DC and Output Power Testing 100% Visual Inspection to MIL-STD-883 Method 2010 General Description Mimix Broadband's three stage 36.0-40.0 GHz GaAs MMIC power amplifier is optimized for linear operation with a third order intercept point of +36.0 dBm. This MMIC uses Mimix Broadband's 0.15 m GaAs PHEMT device model technology, and is based upon electron beam lithography to ensure high repeatability and uniformity. The chip has surface passivation to protect and provide a rugged part with backside via holes and gold metallization to allow either a conductive epoxy or eutectic solder die attach process. This device is well suited for Millimeter-wave Point-to-Point Radio, LMDS, SATCOM and VSAT applications. Absolute Maximum Ratings Supply Voltage (Vd) Supply Current (Id1,2,3) Gate Bias Voltage Input Power (Pin) Storage Temperature (Tstg) Operating Temperature (Ta) Channel Temperature (Tch) +5.5 VDC 155,415,715 mA +0.3 VDC +8 dBm -65 to +165 OC -55 to MTTF TAble3 MTTF Table 3 (3) Channel temperature affects a device's MTTF. It is recommended to keep channel temperature as low as possible for maximum life. Electrical Characteristics (Ambient Temperature T = 25 oC) Parameter Frequency Range (f ) Input Return Loss (S11) Output Return Loss (S22) Small Signal Gain (S21) Gain Flatness ( S21) Reverse Isolation (S12) Output Power for 1 dB Compression (P1dB) 2 Output Third Order Intercept Point (OIP3) 1,2 Drain Bias Voltage (Vd1,2,3) Gate Bias Voltage (Vg1,2,3) Supply Current (Id) (Vd=5.0V, Vg=-0.5V Typical) Units GHz dB dB dB dB dB dBm dBm VDC VDC mA Min. 36.0 -1.0 Typ. 10.0 9.0 21.0 +/-0.5 +27.0 +36.0 +5.0 -0.5 640 Max. 40.0 0.0 - (1) Measured at +18 dBm per tone output carrier level across the full frequency band. (2) Measured using constant current. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 1 of 6 Characteristic Data and Specifications are subject to change without notice. (c)2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-40.0 GHz GaAs MMIC Power Amplifier May 2006 - Rev 10-May-06 Velocium Products 18 - 20 GHz HPA - APH478 P1011 Power Amplifier Measurements Measured Performance Characteristics (Typical Performance at 25C) Vd1 = Vd2 = Vd3 = 5 V, Id 1 = 100 mA, Id2 = Id3 = 270 mA 28 26 24 22 20 18 16 14 36 37 38 39 40 41 Frequency (GHz) Pout (dBm) Gain (dB) 45 40 IP3 35 30 25 20 15 36 37 38 39 40 41 Frequency (GHz) P1dB 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 -20 -22 -24 36 37 38 39 40 41 Frequency (GHz) 0 -4 Output Return Loss (dB) -8 -12 -16 -20 -24 -28 -32 -36 -40 36 37 38 39 40 41 Frequency (GHz) Input Return Loss (dB) Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 2 of 6 Characteristic Data and Specifications are subject to change without notice. (c)2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-40.0 GHz GaAs MMIC Power Amplifier May 2006 - Rev 10-May-06 Velocium Products 18 - 20 GHz HPA - APH478 P1011 S-Parameters Measured Performance Characteristics (Typical Performance at 25C) Vd1 = Vd2 = Vd3 = 5 V, Id 1 = 100 mA, Id2 = Id3 = 270 mA Freq GHz S11 Mag S11 A ng S21 Mag 36 0.257 169.682 9.752 36.5 0.219 157.254 10.085 37 0.189 139.742 10.462 37.5 0.163 113.77 10.644 38 0.152 80.829 10.783 38.5 0.178 53.538 10.781 39 0.241 32.765 10.87 39.5 0.304 16.271 10.802 40 0.376 2.791 10.806 40.5 0.455 -8.622 10.596 41 0.539 -19.504 10.206 41.5 0.606 -29.153 9.615 42 0.662 -38.825 8.547 S21 Ang S12 Mag S12 Ang S22 Mag S22 Ang 17.572 0 88.316 0.7 154.857 -6.541 0.001 137.979 0.672 149.661 -30.842 0.001 149.628 0.634 144.58 -55.166 0.001 141.639 0.585 139.033 -79.904 0.002 138.863 0.528 134.176 -104.619 0.002 128.236 0.468 130.614 -129.024 0.002 119.139 0.409 128.032 -154.302 0.002 132.162 0.362 126.503 179.147 0.002 114.772 0.322 124.381 151.874 0.003 127.58 0.28 121.51 123.1 0.004 105.152 0.248 118.15 93.208 0.004 86.51 0.217 110.228 62.374 0.004 59.679 0.175 94.873 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 3 of 6 Characteristic Data and Specifications are subject to change without notice. (c)2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-40.0 GHz GaAs MMIC Power Amplifier May 2006 - Rev 10-May-06 P1011 Mechanical Drawing 0.920 (0.036) 0.582 (0.023) 1 2 0.582 (0.023) 0.0 0.0 9 8 7 6 5 4 3 3.760 (0.148) 0.980 1.379 0.580 (0.023) (0.039) (0.054) 1.780 2.179 (0.070) (0.086) 2.579 (0.102) 3.179 (0.125) Units: millimeters (inches) Bond pad dimensions are shown to center of bond pad. Thickness: 0.110 +/- 0.010 (0.0043 +/- 0.0004), Backside is ground, Bond Pad/Backside Metallization: Gold All Bond Pads are 0.100 x 0.100 (0.004 x 0.004). Bond pad centers are approximately 0.109 (0.004) from the edge of the chip. Dicing tolerance: +/- 0.005 (+/- 0.0002). Approximate weight: 2.145 mg. Bond Pad #1 (RF In) Bond Pad #2 (RF Out) Bond Pad #3 (Vd3b) Bond Pad #4 (Vd3a) Bond Pad #5 (Vg3) Bond Pad #6 (Vd2) Bond Pad #7 (Vg2) Bond Pad #8 (Vd1) Bond Pad #9 (Vg1) Bias Arrangement RF In 1 2 RF Out Bypass Capacitors - See App Note [2] 9 Vg1 10 Vd1 8 7 Vd2 10 Vg3 6 5 Vd3a 10 4 Vd3b 3 Vg2 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 4 of 6 Characteristic Data and Specifications are subject to change without notice. (c)2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-40.0 GHz GaAs MMIC Power Amplifier May 2006 - Rev 10-May-06 P1011 App Note [1] Biasing - It is recommended to separately bias each stage at Vd(1,2,3)=5.0V, Id1=100mA, Id2=270mA, and Id3=270mA. It is also recommended to use active biasing to keep the currents constant as the RF power and temperature vary; this gives the most reproducible results. Depending on the supply voltage available and the power dissipation constraints, the bias circuit may be a single transistor or a low power operational amplifier, with a low value resistor in series with the drain supply used to sense the current. The gate of the pHEMT is controlled to maintain correct drain current and thus drain voltage. The typical gate voltage needed to do this is -0.5V. Typically the gate is protected with Silicon diodes to limit the applied voltage. Also, make sure to sequence the applied voltage to ensure negative gate bias is available before applying the positive drain supply. App Note [2] Bias Arrangement - For Parallel Stage Bias (Recommended for general applications) -- The same as Individual Stage Bias but all the drain or gate pad DC bypass capacitors (~100-200 pF) can be combined. Additional DC bypass capacitance (~0.01 uF) is also recommended to all DC or combination (if gate or drains are tied together) of DC bias pads. For Individual Stage Bias (Recommended for Saturated Applications) -- Each DC pad (Vd1,2,3 and Vg1,2,3) needs to have DC bypass capacitance (~100-200 pF) as close to the device as possible. Additional DC bypass capacitance (~0.01 uF) is also recommended. MTTF Table (TBD) These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry. Backplate Temperature 55 deg Celsius 75 deg Celsius 95 deg Celsius Channel Temperature deg Celsius deg Celsius deg Celsius Rth MTTF Hours FITs C/W C/W C/W E+ E+ E+ E+ E+ E+ Bias Conditions: Vd1=Vd2=Vd3=5.0V, Id1=100 mA, Id2=270 mA, Id3=270 mA Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 5 of 6 Characteristic Data and Specifications are subject to change without notice. (c)2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. 36.0-40.0 GHz GaAs MMIC Power Amplifier May 2006 - Rev 10-May-06 Velocium Products 18 - 20 GHz HPA - APH478 P1011 Handling and Assembly Information CAUTION! - Mimix Broadband MMIC Products contain gallium arsenide (GaAs) which can be hazardous to the human body and the environment. For safety, observe the following procedures: Do not ingest. Do not alter the form of this product into a gas, powder, or liquid through burning, crushing, or chemical processing as these by-products are dangerous to the human body if inhaled, ingested, or swallowed. Observe government laws and company regulations when discarding this product. This product must be discarded in accordance with methods specified by applicable hazardous waste procedures. Life Support Policy - Mimix Broadband's products are not authorized for use as critical components in life support devices or systems without the express written approval of the President and General Counsel of Mimix Broadband. As used herein: (1) Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. (2) A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ESD - Gallium Arsenide (GaAs) devices are susceptible to electrostatic and mechanical damage. Die are supplied in antistatic containers, which should be opened in cleanroom conditions at an appropriately grounded antistatic workstation. Devices need careful handling using correctly designed collets, vacuum pickups or, with care, sharp tweezers. Die Attachment - GaAs Products from Mimix Broadband are 0.100 mm (0.004") thick and have vias through to the backside to enable grounding to the circuit. Microstrip substrates should be brought as close to the die as possible. The mounting surface should be clean and flat. If using conductive epoxy, recommended epoxies are Ablestick 84-1LMI or 84-1LMIT cured in a nitrogen atmosphere per manufacturer's cure schedule. Apply epoxy sparingly to avoid getting any on to the top surface of the die. An epoxy fillet should be visible around the total die periphery. If eutectic mounting is preferred, then a fluxless gold-tin (AuSn) preform, approximately 0.001 2 thick, placed between the die and the attachment surface should be used. A die bonder that utilizes a heated collet and provides scrubbing action to ensure total wetting to prevent void formation in a nitrogen atmosphere is recommended. The gold-tin eutectic (80% Au 20% Sn) has a melting point of approximately 280 C (Note: Gold Germanium should be avoided). The work station temperature should be 310 C + 10 C. Exposure to these extreme temperatures should be kept to minimum. The collet should be heated, and the die pre-heated to avoid excessive thermal shock. Avoidance of air bridges and force impact are critical during placement. Wire Bonding - Windows in the surface passivation above the bond pads are provided to allow wire bonding to the die's gold bond pads. The recommended wire bonding procedure uses 0.076 mm x 0.013 mm (0.003" x 0.0005") 99.99% pure gold ribbon with 0.5-2% elongation to minimize RF port bond inductance. Gold 0.025 mm (0.001") diameter wedge or ball bonds are acceptable for DC Bias connections. Aluminum wire should be avoided. Thermo-compression bonding is recommended though thermosonic bonding may be used providing the ultrasonic content of the bond is minimized. Bond force, time and ultrasonics are all critical parameters. Bonds should be made from the bond pads on the die to the package or substrate. All bonds should be as short as possible. Page 6 of 6 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Characteristic Data and Specifications are subject to change without notice. (c)2006 Mimix Broadband, Inc. Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept their obligation to be compliant with U.S. Export Laws. |
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