37.0-40.0 GHz GaAs MMIC
Buffer Amplifier, QFN
January 2011 - Rev 10-Jan-11
B1014-QT
Features
21.0 dB Small Signal Gain
+22.0 dBm Psat
+20.0 dBm P1dB
+30.5 dBm Output IP3
Variable Gain with Adjustable Bias
3x3mm, QFN
100% RF, DC and Output Power Testing
General Description
Mimix Broadband’s three stage 37.0-40.0 GHz GaAs
MMIC buffer amplifier has a small signal gain of 21.0 dB
and 20.0 dBm P1dB output compression point. The
device also provides variable gain regulation with
adjustable bias. The device is ideally suited as an LO or RF
buffer stage with broadband performance at a very low
cost. The device comes in an RoHS compliant 3x3mm
QFN surface mount package offering excellent RF and
thermal properties. This device has been designed for
use in 38 GHz Point-to-Point Microwave Radio
applications.
Absolute Maximum Ratings
+4.3V
-1.5V < Vg < 0V
+20 dBm
See MTTF Graph
1
150 ºC
Continuous Power Dissipation (Pdiss) at 85 ºC
1.2 W
47 ºC/W
Thermal Resistance
-55 ºC to MTTF Graph
1
Operating Temperature (Ta)
Storage Temperature (Tstg)
-65 to +165 ºC
Mounting Temperature
See solder reflow profile
ESD Min. - Machine Model (MM)
Class A
ESD Min. - Human Body Model (HBM)
Class 1A
MSL Level
MSL3
Supply Voltage (Vd1,2,3)
Supply Voltage (Vg1,2,3)
Input Power (Pin)
Abs. Max. Junction/Channel Temp
Max. Operating Junction/Channel Temp
(1) Channel temperature directly affects a device’s MTTF. Channel temperature
should be kept as low as possible to maximize lifetime.
(2) For saturated performance it recommended that the sum of
(2*Vdd + abs(Vg)) < 9V
Electrical Characteristics (Ambient Temperature T = 25
o
C)
Parameter
Frequency Range (f )
Input Return Loss (S11)
Output Return Loss (S22)
Small Signal Gain (S21)
Reverse Isolation (S12)
Output Power for 1dB Compression (P1dB)
Saturated Output Power (Psat)
Output IP3 (Psci = 4 dBm)
Drain Bias Voltage (Vd1,2,3)
Gate Bias Voltage (Vg1,2,3)
Supply Current (Id1,2,3)
Units
GHz
dB
dB
dB
dB
dBm
dBm
dBm
V
V
mA
Min.
37.0
-
-
17.0
-
-
19.5
27.0
-
-1.0
-
Typ.
-
7.0
10.0
21.0
40.0
20.0
22.0
30.5
4.0
-0.3
250
Max.
40.0
-
-
24.5
-
-
-
-
4.0
-0.1
300
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.
©2011
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
Buffer Amplifier, QFN
January 2011 - Rev 10-Jan-11
B1014-QT
Buffer Amplifier Measurements
XB1014-QT: Small Signal Gain (S21)
Vd = 4V, Id1 = Id2 = 62.5 mA, Id3 = 125 mA
30
25
20
10
5
0
XB1014-QT: Input Return Loss (S11)
Vd = 4V, Id1 = Id2 = 62.5 mA, Id3 = 125 mA
S21 (dB)
S11 (dB)
-5
-10
-15
-20
15
10
5
0
37
37.5
38
38.5
39
39.5
40
-25
-30
37
37.5
38
38.5
39
39.5
40
Frequency (GHz)
Frequency (GHz)
XB1014-QT: Output Return Loss (S22)
Vd = 4V, Id1 = Id2 = 62.5 mA, Id3 = 125 mA
10
5
0
-20
-25
-30
XB1014-QT: Reverse Isolation (S12)
Vd = 4V, Id1 = Id2 = 62.5 mA, Id3 = 125 mA
S22 (dB)
S12 (dB)
-5
-10
-15
-20
-25
-30
37
37.5
38
38.5
39
39.5
40
-35
-40
-45
-50
-55
-60
37
37.5
38
38.5
39
39.5
40
Frequency (GHz)
Frequency (GHz)
XB1014-QT: OIP3 vs Freq
Pscl=+5dBm; Vd1,2,3=4.0V, Id1=Id2=62.5mA, Id3=125mA
36
35
34
60
58
56
54
XB1014-QT: C/I3 vs Freq
Pscl=+5dBm; Vd1,2,3=4.0V, Id1=Id2=62.5mA, Id3=125mA
OIP3 (dBm)
33
C/I3 (dBc)
37
37.5
38
38.5
39
39.5
40
32
31
30
29
28
27
26
52
50
48
46
44
42
40
37
37.5
38
38.5
39
39.5
40
Frequency (GHz)
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.
©2011
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
Buffer Amplifier, QFN
January 2011 - Rev 10-Jan-11
B1014-QT
XB1014-QT: Psat vs Freq
Vd1,2,3=4.0V, Id1=Id2=62.5mA, Id3=125mA
26
25
24
23
Buffer Amplifier Measurements (cont.)
XB1014-QT: P1dB vs Freq
Vd1,2,3=4.0V, Id1=Id2=62.5mA, Id3=125mA
26
25
24
P1dB (dBm)
23
22
21
20
19
18
17
16
37
37.5
38
38.5
39
39.5
40
Psat (dBm)
22
21
20
19
18
17
16
37
37.5
38
38.5
39
39.5
40
Frequency (GHz)
Frequency (GHz)
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.
©2011
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
Buffer Amplifier, QFN
January 2011 - Rev 10-Jan-11
B1014-QT
Package Dimensions / Layout
Functional Block Diagram/Pin Designations
VD1
VD2
VD3
Pin Designations
Pin Number Pin Name Pin Function Nominal Value
3
RF In
RF Input
-
5
VG1
Gate 1 Bias
Approx. -0.3V
6
VG2
Gate 2 Bias
Approx. -0.3V
7
VG3
Gate 3 Bias
Approx. -0.3V
10
RF Out
RF Output
-
13
VD3
Drain 3 Bias
4V, 125 mA
14
VD2
Drain 2 Bias
4V, 62.5 mA
15
VD1
Drain 1 Bias
4V, 62.5 mA
GND
GND
RFIN
RFOUT
GND
GND
VG1
VG2
VG3
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.
©2011
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
Buffer Amplifier, QFN
January 2011 - Rev 10-Jan-11
B1014-QT
App Note [1] Biasing
- It is recommended to bias the amplifier with Vd=4.0V and Id
TOTAL
=250mA. 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
-
Each DC pin (Vd and Vg) needs to have DC bypass capacitance (100pF/10nF/1uF) as close to the package as possible.
MTTF
XB1014-QT: MTTF hours vs. Package Base Temperature
Vd1,2,3=4V; Id1=Id2=62.5mA, Id3=125mA
1.0E+14
1.0E+13
1.0E+12
1.0E+11
1.0E+10
1.0E+09
1.0E+08
1.0E+07
1.0E+06
1.0E+05
1.0E+04
1.0E+03
20
30
40
50
60
70
80
90
100
110
120
XB1014-QT: Tch (max) vs. Package Base Temperature
Vd1,2,3=4V; Id1=Id2=62.5mA, Id3=125mA
200
180
2.0
1.8
1.6
XB1014-QT: Operating Power De-rating Curve
(continuous)
MTTF (hours)
Tch_max (ºC)
160
140
120
100
80
60
40
20
0
20
30
40
50
60
70
80
90
100
110
120
Pdiss (W)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
20
30
40
50
60
70
80
90
100
110
120
130
140
150
Package Base Temp (ºC)
Package Base Temp (ºC)
Package Base Temp (ºC)
Typical Application
RF OUT
37.0-39.5 GHz
XP1080-QK
XB1014-QT
XU1019-QH
Coupler
Mixer
X
Buffer
IF In
2 GHz
X2
LO
Mimix Broadband MMIC-based 37.0-40.0 GHz Transmitter Block Diagram
Factory Automation and Identification
Mimix
Designator
-QT
Package
Type
QFN (3x3mm)
Number of
leads offered
16
W Tape
Width
12mm
P
1
Component
Pitch
8mm
P
0
Hole
Pitch
4mm
Reel
Diameter
329mm (13in)
Units
per Reel
2000
Component Orientation:
Parts are to be oriented with the PIN 1 closest to the tape's round sprocket holes on the tape’s trailing edge.
Note: Tape and Reel packaging is ordered with a -000T suffix. Package is available in 500 unit reels through designated sales channels.
Minimum order quantities should be discussed with your local sales representative.
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.
©2011
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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