16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Features
High Dynamic Range
Excellent LO Driver/Buffer Amplifier
Low Noise or Power Bias Configurations
21.0 dB Small Signal Gain
2.2 dB Noise Figure at Low Noise Bias
+19 dBm P1dB Compression Point at Power Bias
Pin for Pin XB1001 Replacement
100% On-Wafer RF, DC and Noise Figure Testing
100% Visual Inspection to MIL-STD-883
Method 2010
General Description
Parameter Units
GHz
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
VDC
VDC
mA
Min.
16.0
6.0
10.0
18.0
-
40.0
-
-
-
+18.0
-
-1.2
-
Typ.
-
14.0
14.0
21.0
+/-1.0
50.0
2.2
+19.0
+28.0
+22.0
+4.0
-0.3
90
Max.
30.0
-
-
24.0
-
-
3.0
-
-
-
+6.0
+0.1
180
Supply Voltage (Vd)
Supply Current (Id)
Gate Bias Voltage (Vg)
Input Power (Pin)
Storage Temperature (Tstg)
Operating Temperature (Ta)
Channel Temperature (Tch)
+6.5 VDC
200 mA
+0.3 VDC
+5 dBm
-65 to +165 OC
-55 to MTTF Table
MTTF Table
Chip Device Layout
(1) Optional power bias Vd1,2=6.0V, Id=180mA will typically yield 3-4dB improved P1dB and OIP3.
(2) Measured using constant current.
(3) Unless otherwise indicated Min/Max over 17.0-28.0 GHz and biased at Vd=6.0V, Id1=90mA, Id2=90mA.
(4) Unless otherwise indicated Min/Max over 17.0-28.0 GHz and biased at Vd=4.0V, Id1=45mA, Id2=45mA.
(5) Channel temperature affects a device's MTBF. It is
recommended to keep channel temperature as low as
possible for maximum life.
5
1,2,3
1,2,3
5
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. ©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.
Mimix Broadband’s three stage 16.0-30.0 GHz GaAs
MMIC buffer amplifier has a small signal gain of 21.0 dB
with a noise figure of 2.2 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.
Electrical Characteristics (Ambient Temperature T = 25 oC)
Absolute Maximum Ratings
Frequency Range (f )
Input Return Loss (S11)
Output Return Loss (S22)
Small Signal Gain (S21)
Gain Flatness (∆S21)
Reverse Isolation (S12)
Noise Figure (NF)
Output Power for 1 dB Compression (P1dB)
Output Third Order Intercept Point (OIP3)
Output Power for Saturation Point (Psat)
Drain Bias Voltage (Vd1,2)
Gate Bias Voltage (Vg1c,2c)
Supply Current (Id) (Vd=4.0V, Vg=-0.3V Typical)
3
4
3
3
3
March 2005 - Rev 15-Mar-05 B1004
Page 1 of 10
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 2 of 10
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. ©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.
Buffer Amplifier Measurements
XB1004 Vd1,2=4.0 V Id1=22.5 mA, Id2=45 mA
~7000 Devices
14
15
16
17
18
19
20
21
22
23
24
16.0 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
Frequency (GHz)
Gain (dB)
+ 3 sigma Median Mean - 3 sigma
XB1004 Vd1,2=4.0 V Id1=22.5 mA, Id2=45 mA
~7000 Devices
-80
-70
-60
-50
-40
-30
-20
-10
0
16.0 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
Frequency (GHz)
Reverse Isolation (dB)
Max Median Mean - 3 sigma
XB1004 Vd1,2=4.0 V Id1=22.5 mA, Id2=45 mA
~7000 Devices
-22
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
16.0 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
Frequency (GHz)
Output Return Loss (dB)
+ 3 sigma Median Mean - 3 sigma
XB1004 Vd1,2=4.0 V Id1=22.5 mA, Id2=45 mA
~7000 Devices
-22
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
16.0 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
Frequency (GHz)
Input Return Loss (dB)
+ 3 sigma Median Mean - 3 sigma
B1004
March 2005 - Rev 15-Mar-05
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 3 of 10
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. ©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.
Buffer Amplifier Measurements (cont.)
B1004
March 2005 - Rev 15-Mar-05
XB1004 Vd1,2=4.0 V Id1=45 mA, Id2=45 mA
~3460 Devices
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
16.0 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
Frequency (GHz)
Noise Figure (dB)
Max Median Mean -3sigma
XB1004 Vd1,2=4.0 V Id1=45 mA, Id2=45 mA
~10210 Devices
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
14.0 15.0 16.0 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
Frequency (GHz)
Gain (dB)
Max Median Mean -3sigma
XB1004 Vd1,2=4.0 V Id1=45 mA, Id2=45 mA
~10280 Devices
-80
-70
-60
-50
-40
-30
-20
-10
0
14.0 15.0 16.0 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
Frequency (GHz)
Reverse Isolation (dB)
Max Median Mean -3sigma
XB1004 Vd1,2=4.0 V Id1=45 mA, Id2=45 mA
~10280 Devices
-25
-20
-15
-10
-5
0
14.0 15.0 16.0 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
Frequency (GHz)
Input Return Loss (dB)
Max Median Mean -3sigma
XB1004 Vd1,2=4.0 V Id1=45 mA, Id2=45 mA
~10210 Devices
-25
-20
-15
-10
-5
0
14.0 15.0 16.0 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
Frequency (GHz)
Output Return Loss (dB)
+3sigma Median Mean -3sigma
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 4 of 10
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. ©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.
Buffer Amplifier Measurements (cont.)
B1004
March 2005 - Rev 15-Mar-05
XB1004 Vd1,2=4.0 V Id1=90 mA, Id2=90 mA
~3200 Devices
14
15
16
17
18
19
20
21
22
23
24
14.0 15.0 16.0 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
Frequency (GHz)
Gain (dB)
Max Median Mean -3sigma
XB1004 Vd1,2=4.0 V Id1=90 mA, Id2=90 mA
~3200 Devices
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
14.0 15.0 16.0 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
Frequency (GHz)
Reverse Isolation (dB)
Max Median Mean -3sigma
XB1004 Vd1,2=4.0 V Id1=90 mA, Id2=90 mA
~3200 Devices
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
14.0 15.0 16.0 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
Frequency (GHz)
Input Return Loss (dB)
Max Median Mean -3sigma
XB1004 Vd1,2=4.0 V Id1=90 mA, Id2=90 mA
~3200 Devices
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
14.0 15.0 16.0 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
Frequency (GHz)
Output Return Loss (dB)
Max Median Mean -3sigma
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 5 of 10
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. ©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.
Buffer Amplifier Measurements at Power Bias
2_0279_R2C2: Pout vs. freq_R2C2
0
2
4
6
8
10
12
14
16
18
20
22
24
16 18 20 22 24 26 28 30 32 34 36
freq (GHz)
Pout (dBm)
2_0279: Pout vs. freq at -10, -3 and 7dBm
0
2
4
6
8
10
12
14
16
18
20
22
24
16 18 20 22 24 26 28 30 32 34 36
freq (GHz)
Pout (dBm)
2_0279_R3C3: OP1dB
10
12
14
16
18
20
22
18 20 22 24 26 28 30 32 34
Freq (GHz)
OP1dB (dBm)
OP1dB
B1004
March 2005 - Rev 15-Mar-05
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 6 of 10
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. ©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.
S-Parameters
B1004
March 2005 - Rev 15-Mar-05
Typical S-Parameter Data for XB1004
Vd=4 V Id1=45 mA Id2=45 m
A
Frequency S11 Mag S11 Phase S12 Mag S12 Phase S21 Mag S21 Phase S22 Mag S22 Phase
(GHz) dB Ang
o
dB Ang
o
dB Ang
o
dB Ang
o
14.00 -4.488006386 160.3477 -65.20547853 97.9597 15.91141774 80.4131 -7.961292105 156.364
14.25 -4.780466353 156.7746 -65.04914525 130.745 16.26308988 72.75384 -8.307793633 81.76258
14.50 -5.090069626 153.2923 -66.83487195 144.4173 16.58581284 66.05664 -8.516462366 17.58182
14.75 -5.515642302 149.3398 -62.82813364 145.9903 16.96448878 58.3271 -8.817693057 -60.40213
15.00 -5.908319039 146.0351 -62.15152842 140.1351 17.27640243 51.4296 -9.116250938 -125.5226
15.25 -6.36492729 142.3947 -63.79403343 139.2024 17.6306096 43.16068 -9.490746359 152.1885
15.50 -6.835321917 139.2067 -61.55571655 135.3048 17.89655959 36.43289 -9.758978333 91.87538
15.75 -7.443645645 135.8314 -61.61834811 136.4185 18.23731044 27.96522 -10.0850734 15.17566
16.00 -7.954014568 133.451 -62.87801498 130.6166 18.53392439 21.13839 -10.44926621 -49.12296
16.25 -8.613494027 130.5553 -60.97586254 155.2967 18.79434566 12.62619 -10.70325156 -126.3388
16.50 -9.351339718 128.5114 -59.08234194 149.3536 19.06419509 4.264312 -11.23343585 150.939
16.75 -9.938284456 126.7418 -58.07570032 153.9659 19.2955573 -2.923985 -11.49338288 89.83047
17.00 -10.72781907 125.6761 -57.10236855 145.1132 19.55954352 -11.07268 -11.84807057 15.57915
17.25 -11.45757287 125.1995 -55.63348472 146.4742 19.73877049 -18.24617 -12.26263506 -47.66284
17.50 -12.10581429 125.4995 -55.25927565 142.45 19.96235376 -27.11272 -12.70872047 -123.7843
17.75 -12.78314466 126.4037 -53.62911008 137.6782 20.12122686 -33.96728 -13.08797618 167.1598
18.00 -13.40563631 128.1031 -53.49785092 126.705 20.31749415 -42.63926 -13.38602103 94.69427
18.25 -13.76917019 130.3096 -53.59193789 118.0486 20.45549686 -50.03904 -13.55092416 35.52287
18.50 -14.12698 132.3081 -53.18089883 118.702 20.58039147 -58.52836 -13.66587745 -40.1016
18.75 -14.48203359 134.6221 -53.36091684 115.3193 20.75502996 -67.11792 -13.7915767 -115.0743
19.00 -14.55165735 136.2222 -52.97969443 109.4043 20.80511699 -74.15998 -13.84992904 44.88443
19.25 -14.63942028 136.5078 -53.42822181 101.9631 20.86890808 -82.84879 -13.7461338 102.1477
19.50 -14.68157629 137.3111 -53.1769237 103.6469 20.93192687 -89.86997 -13.75692934 41.94405
19.75 -14.74099805 139.6776 -52.39693469 104.5834 20.97333211 -97.89622 -14.05814122 -33.67156
20.00 -14.51000349 138.8338 -51.49852234 95.15817 20.98201169 -105.3744 -13.81447312 -96.83292
20.25 -14.62534716 138.1341 -51.66603657 96.65334 20.98524967 -113.0653 -13.90279702 -168.5283
20.50 -14.70616526 136.6651 -51.38333793 82.06539 20.99616315 -120.2752 -13.77821296 120.4647
20.75 -14.90553527 136.5904 -52.71399942 82.86057 20.96910204 -128.1374 -13.92470348 44.1559
21.00 -15.02357419 135.813 -52.10524654 79.37607 20.89622002 -135.913 -14.0619026 -31.24287
21.25 -15.05015808 135.6739 -52.02010887 76.92526 20.91884446 -142.6171 -14.0289345 -93.15093
21.50 -15.10655145 134.7054 -52.22623499 71.78536 20.84428402 -150.0642 -13.99375336 -166.7917
21.75 -14.98337453 135.7253 -51.58492383 80.65435 20.84540286 -156.16 -13.93191213 126.4174
22.00 -15.0534118 132.4365 -50.65432343 70.29443 20.79089267 -163.8192 -13.80462928 50.23223
22.25 -15.18069607 130.7094 -51.01217322 64.31312 20.77090997 -169.6259 -13.66911466 -14.48867
22.50 -15.12574012 129.0565 -50.0589988 56.86007 20.8603409 -170.5688 -13.58380875 -91.78304
22.75 -15.08626965 128.2232 -51.74807807 55.47022 20.81792882 172.9285 -13.7221915 -152.1783
23.00 -14.99602393 124.8725 -51.13032313 53.64964 20.80876731 168.9904 -13.53672031 126.3781
23.25 -14.8537183 120.3659 -50.17404016 57.88192 20.8115805 161.4748 -13.32979145 51.83643
23.50 -15.36344283 116.3281 -49.045145 43.18889 20.73456942 155.6715 -13.35741826 -14.95574
23.75 -15.0946598 115.1304 -49.85819483 43.34335 20.81239514 148.4648 -13.40357247 -90.19309
24.00 -15.39735257 112.4639 -49.72499596 32.64002 20.75503497 142.5701 -13.4656704 -152.0927
24.25 -15.13095054 109.5295 -50.13093024 30.30852 20.83643776 135.1379 -13.55071132 126.8156
24.50 -15.1744339 106.0131 -50.20715943 25.31852 20.83040005 129.3736 -13.65003675 62.67419
24.75 -14.87939547 100.8113 -50.50249522 26.3597 20.89856238 121.75 -13.52521517 -12.75818
25.00 -14.90477717 96.33096 -49.57066959 21.51729 20.90054564 115.4541 -13.5387876 -76.76747
25.25 -14.67738998 91.03966 -48.74758629 21.70694 20.89195512 108.3276 -13.57528524 -150.5746
25.50 -14.38830456 87.22176 -49.67421973 8.14969 20.99917398 101.1408 -13.72233378 127.6319
25.75 -14.13837685 81.97481 -48.96714338 5.585327 21.04299246 94.48246 -13.85032041 64.45851
26.00 -13.68285147 75.85893 -49.1836183 -3.681355 21.12871511 87.0444 -14.05533839 -10.21604
26.25 -13.22837385 70.50666 -50.06582294 -14.11971 21.257216 80.46708 -14.16774214 -72.27026
26.50 -12.44232727 62.4766 -50.54932781 -23.09788 21.34178196 71.82767 -14.09760141 -142.9784
26.75 -12.1231902 55.19888 -49.5366484 -9.982013 21.34760323 65.34277 -14.12675521 142.8106
27.00 -11.51541544 48.33369 -49.01919565 -31.26795 21.48924461 56.8985 -14.44884399 72.33661
27.25 -10.95899259 42.02633 -49.27235222 -36.02533 21.51576377 49.67164 -14.46870091 12.9942
27.50 -10.17930299 33.51711 -49.83416656 -45.60722 21.56439576 40.38253 -14.03623103 -61.09192
27.75 -9.486668382 24.41982 -50.21434656 -51.82261 21.54985487 31.15906 -14.18198677 -136.7268
28.00 -8.86384684 18.61195 -49.92261375 -63.95271 21.58096768 23.28123 -13.83955787 155.505
28.25 -8.082733695 9.647546 -52.65291204 -77.20475 21.5193103 13.39679 -13.31467582 84.48412
28.50 -7.684183764 1.679874 -52.09575618 -69.46488 21.34695902 5.231442 -13.13934105 24.31771
28.75 -7.134292488 -5.842427 -50.43673429 -76.09734 21.24451683 -4.82478 -12.71549435 -46.76101
29.00 -6.52197965 -12.848 -48.94679421 -89.84153 21.06557481 -13.77886 -12.1811325 -110.1438
29.25 -5.998240777 -22.03921 -49.27311546 -105.3236 20.72026144 -23.99692 -11.4541009 164.9588
29.50 -5.644587238 -28.6075 -48.72771039 -119.9739 20.41443603 -32.80532 -10.89193703 104.8088
29.75 -5.279553438 -37.44137 -49.74170856 -140.7835 19.94991228 -42.83006 -10.21068599 29.38953
30.00 -4.941451463 -44.89988 -49.85115212 -150.2209 19.44888726 -52.45927 -9.575210602 -48.08296
30.25 -4.825257403 -51.70079 -51.02755692 -151.5981 18.89354455 -60.66542 -9.177802992 -114.5268
30.50 -4.615118041 -58.4916 -51.29842096 -154.4575 18.30012391 -69.80401 -8.690316302 159.8694
30.75 -4.44721087 -63.4305 -51.03586887 -157.2381 17.75344043 -76.78794 -8.348029064 96.70776
31.00 -4.355991672 -69.75317 -50.4634257 157.4598 17.08638984 -85.54248 -7.999071087 20.62207
31.25 -4.322415263 -74.47208 -51.17707418 159.6716 16.58920074 -92.28 -7.750419231 -45.304
31.50 -4.206464968 -79.78357 -49.76725044 156.0792 15.83669567 -100.0134 -7.49742569 -124.8377
31.75 -4.173257655 -83.59286 -49.13513642 141.7404 15.33144978 -106.2723 -7.376597896 163.0723
32.00 -4.143739107 -88.26109 -49.28087624 132.9657 14.71038311 -112.2931 -7.215566664 87.67538
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 7 of 10
Mechanical Drawing
Bias Arrangement Bypass Capacitors - See App Note [2]
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. ©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.
(Note: Engineering designator is 22LN3UA0279)
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 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: 2.165 mg.
Bond Pad #1 (RF In)
Bond Pad #2 (Vd1)
Bond Pad #3 (Vd2)
Bond Pad #4 (RF Out)
Bond Pad #5 (Vg2c)
Bond Pad #6 (Vg2b)
Bond Pad #7 (Vg2a)
Bond Pad #8 (Vg1c)
Bond Pad #9 (Vg1b)
Bond Pad #10 (Vg1a)
B1004
RF In
Vd1,2
RF Out
Vg1c, Vg2c
March 2005 - Rev 15-Mar-05
1.760
(0.069)
0.798
(0.031)
2
1
3
4
56
7
8
9
10
1.500
(0.059)
0.0
0.0
1.359
(0.054)
1.958
(0.077)
1.560
(0.061)
1.158
(0.046)
0.958
(0.038) 2.330
(0.092)
0.798
(0.031)
1.290
(0.051)
1.892
(0.074)
2
1
3
4
56
7
8
9
10
Vd1,2
RF In RF Out
Vg1,2
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 8 of 10
App Note [1] Biasing - As shown in the bonding diagram, this device can be operated with all three stages in parallel, and can be biased for
low noise performance or high power performance. Low noise bias is nominally Vd=4V, Id=90mA. More controlled performance will be
obtained by separately biasing Vd1 and Vd2 each at 4.0V, 45mA. Power bias may be as high as Vd=6.0V, Id=180mA with all stages in parallel,
or most controlled performance will be obtained by separately biasing Vd1 and Vd2 each at 6.0V, 90mA. 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 -0.3V. 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. The suggested configuration is to connect Vd1,2 and Vg1c,2c. 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 (Low Input Drive applications only) -- Each DC pad (Vd1,2 and Vg1a,2a,2b) 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.
For Individual Stage Bias (High Input Drive applications only) -- Each DC pad (Vd1,2 and Vg1c,2c) 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.
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. ©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.
MTTF Tables
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
83.4 deg Celsius
105.5 deg Celsius
127.4 deg Celsius
FITs
1.87E-02
2.84E-01
3.13E+00
MTTF Hours
5.36E+10
3.52E+09
3.20E+08
Rth
78.8° C/W
84.7° C/W
90.0° C/W
Bias Conditions: Vd1=Vd2=4.0V, Id1=45 mA, Id2=45 mA
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
108.3 deg Celsius
132.1 deg Celsius
155.5 deg Celsius
FITs
3.91E-01
5.04E+00
4.72E+01
MTTF Hours
2.56E+09
1.99E+08
2.12E+07
Rth
76.1° C/W
81.5° C/W
86.4° C/W
Bias Conditions: Vd1=Vd2=5.0V, Id1=70 mA, Id2=70 mA
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
138.1 deg Celsius
163.7 deg Celsius
188.8 deg Celsius
FITs
9.22E+00
9.82E+01
7.73E+02
MTTF Hours
1.08E+08
1.02E+07
1.29E+06
Rth
77.0° C/W
82.1° C/W
86.8° C/W
Bias Conditions: Vd1=Vd2=6.0V, Id1=90 mA, Id2=90 mA
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
B1004
March 2005 - Rev 15-Mar-05
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 9 of 10
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. ©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.
Typical Application
Mimix Broadband MMIC-based 17.0-27.0 GHz Transmitter Block Diagram
(Changing LO and IF frequencies as required allows design to operate as high as 27 GHz)
IF IN
2 GHz
XB1004 XP1000
XU1000
WG
Sideband
Reject
On-Chip
Temp Comp
Detector
LO(+12dBm)
15.7-17.7 GHz (USB Operation)
19.7-21.7 GHz (LSB Operation)
RF Out
17.7-19.7 GHz
Device Schematic
RFout
RFin
Vd1
Vd2
Vg1a
Vg1b
Vg1c
Vg2a
Vg2b
Vg2c
R=20.0
R=5.0 R=12.5
R=35.0
R=5.0
R=35.0
R=10.0
R=30.0
R=250.0
R=500.0
R=500.0
R=30.0
R=20.0
R=30.0
R=500.0
R=20.0
R=20.0
B1004
March 2005 - Rev 15-Mar-05
16.0-30.0 GHz GaAs MMIC
Buffer Amplifier
Page 10 of 10
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. ©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.
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 anti-
static 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
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.
2
+
-
B1004
March 2005 - Rev 15-Mar-05
