37.0-40.0 GHz GaAs MMIC
Power Amplifier
May 2006 - Rev 10-May-06
Velocium Products
18 - 20 GHz HPA
- APH478
P1012
Chip Device Layout
Features
Excellent Linear Output Amplifier Stage
15.0 dB Small Signal Gain
+28.0 dBm Output P1dB Compression Point
+37.0 dBm Third Order Intercept (OIP3)
100% On-Wafer RF, DC and Output Power Testing
100% Visual Inspection to MIL-STD-883
Method 2010
General Description
Mimix Broadband’s two stage 37.0-40.0 GHz GaAs
MMIC power amplifier is optimized for linear operation
with a third order intercept point of +37.0 dBm. 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 (Id1,2)
Gate Bias Voltage
Input Power (Pin)
Storage Temperature (Tstg)
Operating Temperature (Ta)
Channel Temperature (Tch)
+5.5 VDC
600,600 mA
+0.3 VDC
+19 dBm
-65 to +165
O
C
-55 to MTTF Table
3
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
o
C)
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)
Gate Bias Voltage (Vg1,2)
Supply Current (Id) (Vd=5.0V, Vg=-0.5V Typical)
Units
GHz
dB
dB
dB
dB
dB
dBm
dBm
VDC
VDC
mA
Min.
37.0
-
-
-
-
-
-
-
-
-1.0
-
Typ.
-
10.0
15.0
15.0
+/-0.5
TBD
+28.0
+37.0
+5.0
-0.5
1080
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.
©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.
37.0-40.0 GHz GaAs MMIC
Power Amplifier
May 2006 - Rev 10-May-06
Velocium Products
18 - 20 GHz HPA
- APH478
P1012
Power Amplifier Measurements
Measured performance characteristics (Typical at 25°C)
Vd1= 5 V, Id= 54 0 mA; Vd2= 5V, Vd2= 540 mA
41
39
20
18
Gain (dB)
16
14
12
10
8
36
37
38
39
40
41
Output Power (dBm)
37
35
33
31
29
27
25
36
37
38
39
40
41
RF Frequency (GHz)
*Fixtured data
RF Frequency (GHz)
Two tone test with 18 dBm / tone
IP3
P1 dB
0
0
Input Ret urn Loss (dB)
-5
Output Return Loss (dB)
-5
-10
-15
-20
-25
36
37
38
39
40
41
-10
-15
-20
36
37
38
39
40
41
RF Frequency (GHz)
RF Frequency (GHz)
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.
©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.
37.0-40.0 GHz GaAs MMIC
Power Amplifier
May 2006 - Rev 10-May-06
Velocium Products
18 - 20 GHz HPA
- APH478
P1012
S-Parameters
Measured performance characteristics (Typical at 25°C)
Vd1= 5 V, Id1= 54 0 mA; Vd2= 5V, Id2= 540 mA
Freq GHz S11 Mag
35.00
0.67
35.50
0.62
36.00
0.55
36.50
0.43
37.00
0.30
37.50
0.19
38.00
0.13
38.50
0.12
39.00
0.18
39.50
0.30
40.00
0.44
40.50
0.58
41.00
0.65
41.50
0.69
42.00
0.71
S11 Ang
-127.56
-137.75
-151.52
-167.58
177.64
162.02
141.66
104.26
68.60
44.21
23.97
3.69
-12.92
-25.86
-35.10
S21 Mag
2.81
3.79
4.88
5.78
6.23
6.19
6.17
6.11
6.12
6.08
5.82
5.20
4.37
3.43
2.74
S21 Ang
123.40
98.93
70.98
38.41
6.61
-23.30
-50.03
-75.15
-101.59
-128.51
-157.87
172.29
145.30
120.83
101.52
S12 Mag
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.00
0.00
0.01
S12 Ang
89.40
74.32
59.74
42.61
21.83
1.40
-16.58
-31.90
-57.28
-76.46
-105.57
-136.54
171.25
133.15
79.34
S22 Mag
0.63
0.60
0.55
0.45
0.33
0.22
0.15
0.09
0.05
0.02
0.09
0.17
0.25
0.32
0.36
S22 Ang
89.33
80.18
68.73
56.20
45.95
41.90
42.17
44.32
38.13
-55.95
-124.06
-145.49
-161.40
-174.65
173.89
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.
©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.
37.0-40.0 GHz GaAs MMIC
Power Amplifier
May 2006 - Rev 10-May-06
P1012
Mechanical Drawing
1.260
(0.050)
0.712
(0.028)
1
2
0.712
(0.028)
0.0
0.0
6
0.299
(0.012)
5
0.899
(0.035)
4
3
3.590
(0.141)
1.917
(0.076)
2.592
(0.102)
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: 2.805 mg.
Bond Pad #1 (RF In)
Bond Pad #2 (RF Out)
Bond Pad #3 (Vd2)
Bond Pad #4 (Vg2)
Bond Pad #5 (Vd1)
Bond Pad #6 (Vg1)
Bias Arrangement
Bypass Capacitors
- See App Note [2]
RF In
1
2
RF Out
6
Vg1
10
Vd1
5
Vg2
10
4
Vd2
3
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.
©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.
37.0-40.0 GHz GaAs MMIC
Power Amplifier
May 2006 - Rev 10-May-06
P1012
App Note [1]
Biasing
-
It is recommended to separately bias each stage at Vd(1,2)=5.0V and Id1=Id2=540mA. 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 and Vg1,2) 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=5.0V, Id1=Id2=540 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.
©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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