17.0-35.0 GHz GaAs MMIC Low Noise Amplifier L1001 March 2005 - Rev 01-Mar-05 Features Chip Device Layout Balanced Design Excellent Input/Output Match Self-biased Architecture 14.0 dB Small Signal Gain 2.5 dB Noise Figure 100% On-Wafer RF, DC and Noise Figure Testing 100% Visual Inspection to MIL-STD-883 Method 2010 General Description Mimix Broadband’s two stage balanced 17.0-35.0 GHz GaAs MMIC low noise amplifier has a small signal gain of 14.0 dB with a noise figure of 2.5 dB across the band. This MMIC uses Mimix Broadband’s 0.15 µm 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 (Id) Input Power (Pin) Storage Temperature (Tstg) Operating Temperature (Ta) Channel Temperature (Tch) +6.0 VDC 85 mA +15.0 dBm -65 to +165 OC -55 to MTTF Table1 MTTF Table1 (1) Channel temperature affects a device's MTBF. 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) 3 Output Return Loss (S22) 3 Small Signal Gain (S21) 3 Gain Flatness (∆S21) Reverse Isolation (S12) 3 Noise Figure (NF) @ 21.0-35.0 GHz 3 Output Power for 1 dB Compression (P1dB) Output Third Order Intercept Point (OIP3) Drain Bias Voltage (V5) Supply Current (Id) Units GHz dB dB dB dB dB dB dBm dBm VDC mA Min. 17.0 8.0 15.0 12.0 25.0 - Typ. 10.0 18.0 14.0 +/-1.5 30.0 2.5 +4.0 2 +16.0 2 +5.0 55 Max. 35.0 3.5 +5.5 65 (2) See plots for additional information. (3) Unless otherwise indicated min/max over 17.0-35.0 GHz and biased at Vd=5V, Id=55mA. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 1 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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. 17.0-35.0 GHz GaAs MMIC Low Noise Amplifier L1001 March 2005 - Rev 01-Mar-05 Low Noise Amplifier Measurements XL1001 V5=5.0 V Id=55 mA ~790 devices XL1001 V5=5.0 V Id=55 mA ~840 devices 20 0 Reverse Isolation (dB) 19 18 Gain (dB) 17 16 15 14 13 12 -10 -20 -30 -40 -50 11 10 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0 34.0 35.0 -60 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0 34.0 35.0 Frequency (GHz) Max Median Frequency (GHz) Mean Min Max Output Return Loss (dB) 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 -55 -60 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0 34.0 35.0 Median Frequency (GHz) Mean -3sigma Max 17.0 19.0 21.0 23.0 25.0 27.0 Median Mean -3sigma XL1001 V5=5.0V Id=55 mA ~200 devices Output Power Psat (dBm) Output Power P1dB (dBm) XL1001 V5=5.0V Id=55 mA ~420 Devices 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15.0 -3sigma 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 -55 -60 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0 34.0 35.0 Frequency (GHz) Max Mean XL1001 V5=5.0 V Id=55 mA ~790 devices XL1001 V5=5.0 V Id=55 mA ~840 devices Input Return Loss (dB) Median 29.0 31.0 33.0 35.0 14.0 13.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 15.0 17.0 19.0 21.0 23.0 25.0 27.0 29.0 31.0 33.0 35.0 37.0 37.0 Frequency (GHz) Frequency (GHz) Max Median Mean Max -3sigma Median Mean -3sigma Noise Figure (dB) XL1001 V5=5.0 V Id=55 mA ~590 devices 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0 33.0 34.0 35.0 Frequency (GHz) Max Median Mean -3sigma Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 2 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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. 17.0-35.0 GHz GaAs MMIC Low Noise Amplifier L1001 March 2005 - Rev 01-Mar-05 Low Noise Amplifier Measurements (cont.) XL1001_S12 Vd=5V, Id=55mA XL1001_S21 Vd=5V, Id=55mA 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 -55 -60 -65 -70 26 24 22 20 18 16 14 12 10 8 6 4 2 0 -2 -4 -6 -8 -10 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Frequency (GHz) 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Frequency (GHz) XL1001_S22 Vd=5V, Id=55mA XL1001_S11 Vd=5V, Id=55mA 0 0 -5 -5 -10 -10 -15 -15 -20 -20 -25 -25 -30 -30 -35 -35 -40 -40 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Frequency (GHz) 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 Frequency (GHz) OIP3 with -9dBm per Tone Output Power P1dB 24 12 10 22 8 6 OIP3 (dB) Output P1dB, dBm 20 4 2 18 0 16 -2 -4 14 -6 -8 12 15 17 19 21 23 25 Frequency, GHz 27 29 31 33 35 18 20 22 24 26 28 30 32 34 36 Frequency (GHz) Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 3 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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. 38 17.0-35.0 GHz GaAs MMIC Low Noise Amplifier L1001 March 2005 - Rev 01-Mar-05 S-Parameters Typical S-Parameter Data for XL1001 Vd=5 V Id=55 mA Frequency (GHz) 17.00 17.25 17.50 17.75 18.00 18.25 18.50 18.75 19.00 19.25 19.50 19.75 20.00 20.25 20.50 20.75 21.00 21.25 21.50 21.75 22.00 22.25 22.50 22.75 23.00 23.25 23.50 23.75 24.00 24.25 24.50 24.75 25.00 25.25 25.50 25.75 26.00 26.25 26.50 26.75 27.00 27.25 27.50 27.75 28.00 28.25 28.50 28.75 29.00 29.25 29.50 29.75 30.00 30.25 30.50 30.75 31.00 31.25 31.50 31.75 32.00 32.25 32.50 32.75 33.00 33.25 33.50 33.75 34.00 34.25 34.50 34.75 35.00 S11 Mag dB -16.99632238 -18.22034734 -19.46130647 -20.021277 -20.5230626 -20.79350858 -21.03547412 -20.33289145 -19.74821093 -19.65833757 -18.73569262 -18.00112021 -17.74030982 -16.93611612 -16.10189145 -15.44496195 -15.15035958 -14.28884065 -13.78632457 -13.23082096 -13.06341343 -12.48264971 -12.41050427 -12.24980855 -11.9718369 -11.66130252 -11.49396311 -11.48111131 -11.51126177 -11.3781628 -11.42159635 -11.56625992 -11.7053422 -11.72581082 -11.77209413 -12.10894283 -12.05120986 -12.05645099 -12.05617331 -12.365988 -12.54280318 -12.66435174 -12.89454563 -13.44494988 -13.64633488 -13.97494046 -14.57713942 -15.92177677 -16.18821722 -16.93184208 -18.02002281 -19.42241819 -20.35240685 -21.51572677 -24.59757337 -27.63243773 -29.24539992 -33.05100599 -32.2255574 -29.56508463 -27.42100673 -23.6327812 -20.78925535 -19.35152131 -18.45373034 -17.9166638 -16.68176243 -16.01296201 -15.87056003 -15.75794954 -14.95362452 -14.99746978 -15.0933962 S11 Phase Ango 139.375 143.7155 149.3745 157.7866 162.5519 164.0144 -162.5143 -162.3319 -160.1269 -154.13 -150.6178 -150.1321 -151.6351 -148.0286 -150.2199 -152.6892 -152.6458 -154.1784 -156.4666 -160.9358 -163.3492 -166.3888 -171.106 -174.3592 -175.001 175.2349 172.3154 168.6437 165.6087 162.0349 157.3341 153.5069 151.03 146.5571 141.1745 137.015 133.794 130.3703 124.3654 119.5065 117.7405 111.5445 106.4406 101.562 99.64151 93.37321 86.10413 82.08988 80.52306 74.4507 68.77728 64.24228 62.60468 52.23897 45.28998 56.27588 63.35837 54.67377 21.32345 32.74833 -46.63418 -133.8798 164.9067 163.758 157.7206 156.2775 149.6813 141.8956 135.5129 131.1042 126.3466 117.2361 111.014 S12 Mag dB -43.50135231 -42.92199881 -42.16608471 -41.41931548 -41.0283522 -40.86274857 -40.65611208 -40.27985003 -39.83071713 -39.84003258 -39.78948973 -39.41944586 -38.77541743 -39.47690025 -38.99334211 -39.11710705 -38.97990051 -38.99408887 -39.10445783 -39.3666839 -38.99868222 -39.0143968 -38.7624762 -38.83696132 -38.93113547 -39.14947041 -38.98983022 -39.58993981 -38.74658715 -39.30852919 -38.73287765 -39.05590664 -38.76663499 -39.04292712 -38.71074182 -38.47292867 -38.42338621 -37.93613334 -38.07985536 -38.6077536 -38.14147693 -37.99840456 -37.74363624 -38.26118951 -37.77805157 -37.4684142 -38.15045095 -37.90431875 -37.26253959 -36.87451043 -36.05356609 -36.45846149 -36.32763539 -36.09157141 -36.26154295 -35.53240597 -35.45069025 -35.37890716 -34.64439929 -34.36608485 -34.31455605 -34.69492154 -34.75988301 -34.42111704 -34.31834637 -33.91199138 -34.03444441 -34.18343182 -34.02519154 -33.73531567 -33.80475691 -33.34660119 -33.34259783 S12 Phase Ango -165.0034 -169.7041 171.3443 169.1783 161.3903 154.5895 147.2125 143.6475 135.4723 128.3112 122.8059 118.6622 110.17 106.6602 100.1368 95.17268 89.70592 84.93417 77.69951 76.60333 72.40802 66.88152 64.31834 57.54897 52.16542 47.88209 45.34269 39.8782 36.2598 31.82264 30.08148 25.36871 20.64142 16.35048 14.35935 12.05855 4.893866 -0.4999815 -8.52309 -9.877016 -13.96298 -15.54111 -24.01004 -27.72787 -31.18327 -36.28835 -42.24523 -40.72722 -46.18079 -51.09059 -55.22031 -64.88429 -67.67895 -72.65342 -76.77634 -82.27695 -85.27858 -90.68305 -94.05429 -103.5716 -111.0306 -115.8281 -118.7765 -123.5373 -127.1059 -132.3549 -140.2881 -144.8102 -146.5383 -151.229 -155.8534 -159.9445 -164.4034 S21 Mag dB 16.83518948 16.87423756 16.91162905 16.8988471 16.88168555 16.86207475 16.79916016 16.76593352 16.70160593 16.59635708 16.51201293 16.41252149 16.28421084 16.18789062 16.01093249 15.89582057 15.75055192 15.62364162 15.48422452 15.35980691 15.23031773 15.08773149 14.92882621 14.83073257 14.70156851 14.61513456 14.47697596 14.40450984 14.31530097 14.22519482 14.12218561 14.08745853 14.03423715 13.99406027 13.9292971 13.93028124 13.91800938 13.90974609 13.90164737 13.87603731 13.89372036 13.95917696 13.94595398 13.95486967 14.00059914 14.02320469 14.0865178 14.17701466 14.25079338 14.3350981 14.36570353 14.44879615 14.46990794 14.50271084 14.64352708 14.62710647 14.71629116 14.76855133 14.79127288 14.82711707 14.89051797 14.98209216 14.98811582 14.97073653 14.98076929 14.96913564 14.95144826 14.90443987 14.76367179 14.78396807 14.66771797 14.59668203 14.46929951 S21 Phase Ango 27.56314 14.29959 2.342399 -8.969337 -19.82675 -29.9521 -39.65725 -49.02252 -58.0738 -66.92716 -75.31522 -83.79314 -91.99918 -99.39564 -107.1319 -114.2677 -121.0448 -127.988 -134.3429 -140.9036 -147.1864 -153.3092 -159.323 -165.0063 -170.5581 -175.7427 176.1237 172.2124 167.1249 162.113 157.1459 152.1462 147.1736 141.9767 137.3834 132.8367 128.0229 122.9593 118.2524 113.8509 108.7928 104.4438 99.4355 94.4838 90.20975 85.2106 80.39879 75.86873 70.56535 65.59789 60.5971 55.63038 50.69379 45.04929 39.93787 34.54861 29.25891 24.22786 18.37123 13.00255 7.676987 2.029904 -3.867283 -9.858306 -15.39653 -21.054 -27.27283 -32.92151 -39.00824 -44.87165 -50.65154 -57.21058 -62.64054 S22 Mag dB -21.5662562 -21.98967927 -21.17645409 -20.68817633 -20.92767435 -21.2424634 -20.63942484 -20.32237051 -21.10196596 -21.26399727 -20.49368522 -20.48053642 -21.32987518 -20.47033864 -20.55188264 -20.87478241 -20.69244786 -20.42563027 -20.64844027 -20.54756792 -20.49483591 -20.55487864 -20.60855069 -20.82143463 -20.81131829 -20.71323343 -20.74020992 -20.58346134 -20.88243468 -20.52650526 -20.75361152 -21.31832968 -20.85328522 -20.55219882 -21.13117115 -21.43840093 -20.79462492 -20.41180145 -21.12542644 -21.51735636 -20.63852043 -20.97351704 -21.61922984 -21.52438538 -20.88353898 -21.93021107 -23.03158417 -21.75429554 -21.94554671 -22.43376476 -22.17912903 -23.02114882 -23.60769064 -23.51767644 -23.75469054 -24.69917254 -24.21826248 -26.17949275 -26.94499982 -27.7948772 -28.6015573 -30.19862906 -27.85849305 -27.3709995 -30.38654094 -32.97929522 -28.93613812 -29.09335104 -35.43483674 -35.34884601 -35.46898768 -36.63339404 -39.20296741 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com S22 Phase Ango -145.8288 138.5046 66.65816 -12.65336 -91.32869 -163.5413 122.3871 44.88822 -32.11696 -100.6937 -172.2169 108.4545 37.22786 -28.80878 -105.1162 -173.5728 117.0107 44.79455 -24.99466 -94.38763 -165.9165 119.6442 49.67002 -20.85219 -91.58767 -160.4042 125.1164 50.20322 -13.83082 -86.85399 -157.3243 130.1578 62.67803 -11.75971 -83.11944 -143.6926 142.8679 64.02857 -7.409314 -72.2129 -142.2001 142.6847 69.12561 -0.617398 -74.6953 -143.286 145.0658 78.67702 8.958519 -60.07335 -131.3199 156.2451 81.19078 6.943614 -57.03593 -130.9978 153.7268 80.85181 7.64232 -68.73909 -130.3359 -15.98623 99.83913 24.32363 -58.65744 -105.3385 -131.3147 97.72387 -3.238748 8.814638 -82.0274 105.3629 -59.73188 Page 4 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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. 17.0-35.0 GHz GaAs MMIC Low Noise Amplifier March 2005 - Rev 01-Mar-05 L1001 0.973 1.374 (0.038) (0.054) 1.176 0.775 (0.031) (0.046) Mechanical Drawing 1.950 (0.077) 2 1.288 (0.051) 3 4 5 1 6 10 0.0 0.0 0.775 (0.031) 9 8 7 1.176 (0.046) 0.973 (0.038) 0.658 (0.026) 2.000 (0.079) 1.374 (0.054) (Note: Engineering designator is 28LN2BA0047) Units: millimeters (inches) Bond pad dimensions are shown to center of bond pad. Thickness: 0.115 +/- 0.010 (0.0045 +/- 0.0004), Backside is ground, Bond Pad/Backside Metallization: Gold All DC Bond Pads are 0.100 x 0.100 (0.004 x 0.004). All RF Bond Pads are 0.100 x 0.200 (0.004 x 0.008) Bond pad centers are approximately 0.109 (0.004) from the edge of the chip. Dicing tolerance: +/- 0.005 (+/- 0.0002). Approximate weight: 2.416 mg. Bond Pad #1 (RF In) Bond Pad #2 (V1) Bond Pad #3 (V2) Bias Arrangement 2 RF In 3 Bond Pad #4 (V3) Bond Pad #5 (V4) Bond Pad #6 (RF Out) Bond Pad #7 (V8) Bond Pad #8 (V7) Bond Pad #9 (V6) Bond Pad #10 (V5) V1* 4 Bypass Capacitors - See App Note [2] 5 1 RF In 6 10 9 8 RF Out RF Out 7 V5* *V1 or V5 may be used, but both are not required. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com V5 Page 5 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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. 17.0-35.0 GHz GaAs MMIC Low Noise Amplifier L1001 March 2005 - Rev 01-Mar-05 App Note [1] Biasing - As shown in the bonding diagram, this device operates using a self-biased architecture and only requires a single bias voltage. All DC pads (V1 through V8) are tied together on-chip. Even though V1 or V5 are shown as main connections, any of the eight DC pads may be used to bias the device. Bias is nominally V1 or V5=5V, Id=55mA. App Note [2] Bias Arrangement - The DC pad at the top (V1) should be connected to one DC bypass capacitor (~100-200 pf ) and the DC pad at the bottom (V5) should be connected using another DC bypass capacitor (~100-200 pf ). Additional DC bypass capacitance (~0.01 µf ) is also recommended. Capacitance should be as close to the device as possible. MTTF Table These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry. Backplate Temperature Channel Temperature Rth MTTF Hours FITs 55 deg Celsius 89.4 deg Celsius 149.6° C/W 1.98E+10 5.04E-02 75 deg Celsius 111.9 deg Celsius 160.7° C/W 1.35E+09 7.39E-01 95 deg Celsius 134.2 deg Celsius 170.6° C/W 1.28E+08 7.84E+00 Bias Conditions: V1 or V5=5.0V, Id=55 mA Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 6 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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. 17.0-35.0 GHz GaAs MMIC Low Noise Amplifier L1001 March 2005 - Rev 01-Mar-05 Device Schematic V2 V1 V4 V3 R=10 R=480 R=26.7 R=480 R=200 R=320 VD R=10 R=45 R=425 R=200 R=320 R=425 R=120 R=120 R=262 R=262 R=42 R=200 R=200 R=32 R=32 R=200 R=200 R=32 R=32 R=425 R=425 R=262 R=262 R=120 R=120 R=50 RF In 1 2 1 2 4 3 4 3 RF Out R=50 R=120 R=120 R=425 R=425 R=200 R=200 R=200 R=200 R=425 R=262 R=262 R=32 R=32 R=32 R=32 R=42 R=262 R=425 R=320 R=262 R=320 R=120 R=120 R=200 R=480 R=200 R=480 R=45 R=10 V5 V6 R=26.7 R=10 V7 V8 Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 7 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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. 17.0-35.0 GHz GaAs MMIC Low Noise Amplifier L1001 March 2005 - Rev 01-Mar-05 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. Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099 Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com Page 8 of 8 Characteristic Data and Specifications are subject to change without notice. ©2005 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.