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)
Drain Bias Voltage (V5)
Supply Current (Id)
Electrical Characteristics (Ambient Temperature T = 25
o
C)
Parameter
Units
GHz
dB
dB
dB
dB
dB
dB
dBm
dBm
VDC
mA
Min.
20.0
8.0
15.0
18.0
-
40.0
-
-
-
-
-
Typ.
-
10.0
18.0
23.0
+/-1.5
45.0
2.6
+4.0
+16.0
+5.0
85
Max.
36.0
-
-
-
-
-
4.0
-
-
+5.5
95
Mimix Broadband
's three stage balanced 20.0-36.0
GHz GaAs MMIC low noise amplifier has a small signal
gain of 23.0 dB with a noise figure of 2.6 dB across the
band. 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.
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Absolute Maximum Ratings
Page 1 of 8
General Description
Supply Voltage (Vd)
Supply Current (Id)
Input Power (Pin)
Storage Temperature (Tstg)
Operating Temperature (Ta)
Channel Temperature (Tch)
+6.0 VDC
120 mA
+15.0 dBm
-65 to +165
O
C
-55 to MTTF Table
MTTF Table
(1) Channel temperature affects a device's MTBF. It is
recommended to keep channel temperature as low as
possible for maximum life.
(2) See plots for additional information.
(3) Unless otherwise indicated min/max over 20.0-36.0 GHz and biased at Vd=5V, Id=85mA.
3
1
Features
Balanced Design
Excellent Input/Output Match
Self-biased Architecture
23.0 dB Small Signal Gain
2.6 dB Noise Figure
100% On-Wafer RF, DC and Noise Figure Testing
100% Visual Inspection to MIL-STD-883
Method 2010
Chip Device Layout
1
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.
March 2005 - Rev 01-Mar-05
L1002
3
3
3
3
2
2
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Page 2 of 8
Low Noise Amplifier Measurements
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.
March 2005 - Rev 01-Mar-05
L1002
XL1002 V5=5.0 V Id= 85 mA
~300 devices
18
19
20
21
22
23
24
25
26
27
28
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
36.0
Fre que ncy (GHz)
G
a
in
(
d
B
)
Max
Median
Mean
Min
XL1002 V5=5.0 V Id= 85 mA
~300 devices
-80
-70
-60
-50
-40
-30
-20
-10
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
36.0
Fre que ncy (GHz)
Re
v
e
r
s
e
I
s
o
l
a
t
i
o
n
(d
B)
Max
Median
Mean
-3sigma
XL1002 V5=5.0 V Id= 85 mA
~300 devices
-60
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
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
36.0
Fre que ncy (GHz)
I
n
put
R
e
t
u
r
n
Los
s
(
d
B
)
Max
Median
Mean
-3sigma
XL1002 V5=5.0 V Id= 85 mA
~300 devices
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
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
36.0
Fre que ncy (GHz)
O
u
t
p
ut
R
e
t
u
r
n
Los
s
(
d
B
)
Max
Median
Mean
-3sigma
XL1002 V5=5.0 V Id= 85 mA
~300 devices
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
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
36.0
Fre que ncy (GHz)
N
o
i
s
e
Fi
gur
e
(
d
B
)
Max
Median
Mean
Min
XL1002 V5=5.0 V Id= 85 mA
~110 devices
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
18.0
20.0
22.0
24.0
26.0
28.0
30.0
32.0
34.0
36.0
38.0
Fre que ncy (GHz)
Ou
t
p
u
t
P
o
wer
P
s
a
t
(
d
B
m
)
Max
Median
Mean
-3sigma
XL1002 V5=5.0 V Id= 85 mA
~110 Devices
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18.0
20.0
22.0
24.0
26.0
28.0
30.0
32.0
34.0
36.0
38.0
Fre que ncy (GHz)
Ou
t
p
u
t
P
o
we
r
P
1
d
B
(
d
B
m
)
Max
Median
Mean
-3sigma
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Page 3 of 8
Low Noise Amplifier Measurements (cont.)
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.
OIP3 with -9dBm per Tone Output Power
4
6
8
10
12
14
16
18
20
18
20
22
24
26
28
30
32
34
36
38
Frequency (GHz)
OIP
3
(
d
B)
March 2005 - Rev 01-Mar-05
L1002
0.5
5.5
10.5
15.5
20.5
25.5
30.5
35.5
40.5
45.5
50
Frequency (GHz)
S21
0
5
10
15
20
25
30
0.5
10.5
20.5
30.5
40.5
50
Frequency (GHz)
S12
-80
-60
-40
-20
0.5
5.5
10.5
15.5
20.5
25.5
30.5
35.5
40.5
45.5
50
Frequency (GHz)
S11
-40
-35
-30
-25
-20
-15
-10
-5
0
0.5
10.5
20.5
30.5
40.5
50
Frequency (GHz)
S22
-40
-30
-20
-10
0
XL1002 P1dB vs Frequency
-15
-12.5
-10
-7.5
-5
-2.5
0
2.5
5
7.5
10
12.5
15
18
20
22
24
26
28
30
32
34
36
Frequency, GHz
O
u
t
put
P1
dB
, d
B
m
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Page 4 of 8
S-Parameters
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.
March 2005 - Rev 01-Mar-05
L1002
Typical S-Parameter Data for XL1002
Vd=5 V Id=85 mA
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
20.00
-15.9002655
99.41715
-57.90350115
101.9094
22.22250962
-154.2999
-22.49957736
-70.49445
20.25
-16.43574807
96.25477
-60.06449295
96.44559
22.75796631
-160.736
-22.13714429
-119.0193
20.50
-18.5758231
94.37966
-60.03069173
94.0485
23.59476641
78.77438
-22.06794793
132.4458
20.75
-20.74547537
100.5674
-60.87795519
93.20361
24.45479346
156.0269
-22.93131945
34.66102
21.00
-20.43342219
111.0863
-61.09356564
87.72672
25.03383696
138.7359
-22.61802128
-52.58735
21.25
-19.36768433
107.6506
-60.26458968
81.15953
25.41837192
121.9571
-22.89230213
-133.1146
21.50
-19.64108343
91.84838
-59.46756779
81.13116
25.65097173
106.1357
-23.50517258
124.573
21.75
-23.12356246
65.82703
-57.49984404
109.8655
25.89466551
88.76563
-23.31595729
29.77395
22.00
-25.70343264
-59.76379
-56.19925978
124.5537
25.99519109
74.54252
-22.74851851
-53.15651
22.25
-21.50526684
-135.146
-56.48290494
117.0626
25.9929542
60.20918
-22.7949938
-130.3867
22.50
-19.05440757
-142.7634
-55.33883304
124.7403
25.9423841
46.84296
-22.62239821
127.8174
22.75
-17.11360745
-151.3966
-56.8362217
114.5476
25.83090276
31.59475
-22.84857994
23.23565
23.00
-15.60085198
-153.3808
-55.6578959
119.6489
25.74209128
20.0863
-23.28188137
-58.70689
23.25
-14.35135052
-158.2446
-54.97808349
129.8279
25.64659449
8.80714
-23.24126
-134.4498
23.50
-13.3856983
-163.8366
-54.22745571
127.8824
25.56033298
-2.513484
-22.91076976
133.5038
23.75
-12.9610338
-158.746
-54.70896
122.1129
25.42409663
-15.46905
-22.73361635
37.09391
24.00
-12.50086666
67.2726
-54.95818513
114.179
25.27623067
-25.76448
-23.04809951
-45.12844
24.25
-12.06691459
119.7928
-54.29656888
126.9418
25.22525942
-35.47941
-21.99137851
-119.9143
24.50
-11.58946547
161.3251
-53.62176635
110.5392
25.08452821
-46.34036
-21.74262638
128.6337
24.75
-11.2979335
157.9966
-52.18634317
113.2611
24.96671538
-58.1165
-21.62856073
44.90618
25.00
-11.32741982
154.2951
-54.08715853
106.5829
24.78959987
-67.59283
-21.62569444
-32.37592
25.25
-11.23230046
148.4569
-54.94380763
101.8688
24.62454087
-77.28712
-21.61341775
-118.6259
25.50
-11.04605362
142.5693
-53.16410471
102.6103
24.4671767
-86.12781
-21.5418503
113.3838
25.75
-11.1529744
137.0566
-53.71351535
99.48512
24.28572042
-96.1563
-21.62914881
49.17649
26.00
-11.09572929
130.2404
-53.58539439
93.90759
24.1381749
-105.1414
-21.2125731
-33.18256
26.25
-11.27702909
124.5444
-54.47886939
81.87852
23.96408885
-112.6464
-21.75579699
-113.6358
26.50
-11.43853895
119.0629
-55.66924506
69.55863
23.8413767
-120.1498
-22.08721058
110.4341
26.75
-11.43486595
115.6168
-56.70952349
53.09699
23.7868134
-128.4113
-20.78555945
56.52972
27.00
-11.28678905
110.2075
-57.25326869
79.59267
23.63861901
-135.7376
-20.49282547
-36.71297
27.25
-11.34777459
104.7375
-56.53117138
70.9152
23.51304131
-142.3337
-21.37648611
-106.4817
27.50
-11.51007882
98.59031
-58.55320978
57.19768
23.48823535
-149.245
-21.02814687
88.21476
27.75
-11.29711339
92.73546
-58.68407574
79.07403
23.39653728
-157.9324
-20.01566356
50.2382
28.00
-11.50124587
85.50809
-58.46419327
71.95325
23.30976833
-164.1288
-20.22980389
-35.7298
28.25
-11.67581095
78.95515
-59.08923314
67.20771
23.25062965
-164.0344
-20.94626772
-121.211
28.50
-11.5999179
71.436
-57.24375686
97.31866
23.18229439
92.78526
-20.90978365
137.5318
28.75
-12.08401878
62.25452
-55.08474631
89.09316
23.07224788
163.845
-22.01464821
54.20456
29.00
-12.32326669
56.34512
-55.85084224
63.9235
23.16958513
160.8435
-21.88938435
-22.73862
29.25
-12.57066321
50.79592
-57.92653183
35.59597
23.18119548
153.8734
-21.93832264
-109.8906
29.50
-12.91250529
43.62169
-57.45546939
24.88255
23.21183157
146.7522
-21.92378164
106.3921
29.75
-13.08294897
36.6775
-58.49704375
46.75286
23.21908721
138.7173
-22.69867079
60.67097
30.00
-13.56934243
28.90627
-58.96497436
35.39265
23.29855763
131.9668
-23.45147647
-22.15091
30.25
-14.28213289
22.68205
-59.56790776
12.49677
23.40011131
124.998
-22.9535738
-105.3933
30.50
-14.84559477
19.09998
-57.17543413
7.012173
23.46412715
118.5168
-23.62144702
100.2677
30.75
-15.7254765
10.55204
-56.93909051
-60.67441
23.59381369
109.437
-23.16302839
35.66673
31.00
-15.90116976
4.344876
-53.52393465
-50.78241
23.61091237
103.3517
-23.80209526
-46.45742
31.25
-16.80608456
-14.37604
-52.81794612
26.27111
23.79057747
96.39056
-26.12970435
-19.27615
31.50
-18.32421289
-28.50865
-53.87054849
10.349
23.94433776
89.07619
-26.39217891
54.0527
31.75
-19.99854207
-43.5048
-52.00611753
18.02956
24.05633327
79.39088
-25.70923593
-2.863796
32.00
-20.44644404
-57.39901
-48.80423045
73.397
24.19003022
73.00694
-27.21957623
-88.84454
32.25
-21.47570219
-46.32822
-48.61408215
101.2055
24.3159758
65.29271
-28.25768699
47.03237
32.50
-21.59085903
12.20464
-47.74026811
140.0738
24.52605952
57.20591
-29.32655316
53.69983
32.75
-21.43986593
66.29778
-48.20522772
134.0072
24.67999458
46.23425
-30.04729082
-18.60548
33.00
-20.83623058
114.3232
-47.67629224
135.8989
24.80556365
36.68279
-29.94541134
-49.4307
33.25
-20.61684761
95.46846
-47.03746128
123.2578
24.85037032
27.5361
-29.86332125
79.87144
33.50
-21.32345805
80.8164
-46.05225247
130.9735
24.9077924
18.42938
-30.46836945
46.90621
33.75
-21.13134146
62.16114
-44.26385394
125.1967
24.82881038
7.853101
-28.83884143
-73.26851
34.00
-18.99137156
55.54688
-45.49549946
112.3785
24.7265201
-3.003329
-28.18807261
-51.08787
34.25
-17.71584369
41.11835
-45.09410426
112.7556
24.67845093
-12.65763
-27.41534684
92.06107
34.50
-16.76564374
30.60429
-44.63013596
109.4201
24.44645503
-23.62889
-26.1361376
11.42629
34.75
-16.52865188
21.73982
-43.73190615
104.1454
24.33217176
-35.01781
-25.90936158
-99.27038
35.00
-16.32542763
10.87974
-43.22180567
95.66795
24.03197753
-45.82063
-26.54870881
31.09902
35.25
-16.49280006
-3.310292
-43.29445734
87.2572
23.77255849
-56.46471
-26.44112422
69.25852
35.50
-16.22838581
-11.03301
-43.23875833
86.82874
23.41443288
-67.09972
-26.27478401
-10.89797
35.75
-16.44814918
-28.32576
-43.16730423
76.42503
23.00810401
-79.22389
-25.12049058
-92.98486
36.00
-17.34240915
-33.73981
-42.84589814
74.05479
22.76467429
-84.40869
-23.93343529
-104.399
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Page 5 of 8
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.
Mechanical Drawing
(Note: Engineering designator is 28LN3BA0050)
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: 2.838 mg.
Bias Arrangement
Bond Pad #1 (RF In)
Bond Pad #2 (V1)
Bond Pad #3 (V2)
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)
Bypass Capacitors - See App Note [2]
March 2005 - Rev 01-Mar-05
L1002
RF Out
V5*
RF In
V1*
1
2
3
4
5
6
7
8
9
10
1.384
(0.055)
1.184
(0.047)
0.983
(0.039)
0.785
(0.031)
1
2
3
4
5
1.950
(0.077)
0.983
(0.039)
0.658
(0.026)
1.288
(0.051)
0.0
0.0
6
7
8
1.184
(0.047)
0.785
(0.031)
9
10
1.384
(0.055)
2.350
(0.093)
*V1 or V5 may be used, but both are not required.
RF In
RF Out
V5
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Page 6 of 8
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 Table
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
87.7 deg Celsius
110.1 deg Celsius
132.3 deg Celsius
FITs
6.42E-02
9.50E-01
1.02E+01
MTTF Hours
1.56E+10
1.05E+09
9.83E+07
Rth
88.4
C/W
94.9
C/W
100.8
C/W
Bias Conditions:
V1 or V5=5.0V, Id=85 mA
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
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=85 mA.
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 pf ) is also recommended. Capacitance should be as close to the
device as possible.
March 2005 - Rev 01-Mar-05
L1002
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Page 7 of 8
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.
Device Schematic
March 2005 - Rev 01-Mar-05
L1002
1
2
3
4
R=5 0
R=2 00
R=50
R=400
R =262
R=26 2
R =3 3.3
R=3 3.3
R =2 62
R=2 62
R=3 3.3
R=3 3.3
R=26.7
R=1 8.3
R=200
R=24 0
R=560
R=34
R =26.7
R=18 .3
R =262
R=262
R=33.3
R=33.3
R=262
R =2 62
R=33 .3
R=33.3
R=1 20
R=120
R=12 0
R=12 0
1
2
3
4
R=5 0
R=2 00
R=200
R=2 40
R=5 0
R=40 0
R=2 6.7
R =12 0
R=1 8.3
R=5 60
R=34
R=26.7
R=1 8.3
R=26 2
R =2 62
R =33.3
R=3 3.3
R=262
R =2 62
R=3 3.3
R =3 3.3
R =120
R=12 0
R=12 0
R=200
R=1 60
R=6 40
R=45
R=42 5
R=42 5
R=2 00
R=20 0
R=200
R=42 5
R=42 5
R=200
R=2 00
R =1 0
R=3 20
R =4 8 0
R=45
R=425
R=42 5
R=20 0
R =200
R=42 5
R=42 5
R =20 0
R=2 00
R=10
R=34
R =2 62
R=26 2
R=3 3.3
R=3 3.3
R=120
R =12 0
R=26 2
R=2 62
R=3 3.3
R =3 3.3
R=1 20
R=1 20
R=34
R=350
R=35 0
R =1 20
R=120
R=12 0
R =120
RF Out
RF In
V3
V4
V8
V7
VD
V5
V6
V2
V1
20.0-36.0 GHz GaAs MMIC
Low Noise Amplifier
Page 8 of 8
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
+
-
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.
March 2005 - Rev 01-Mar-05
L1002
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