BT331
700-2700 MHz 1.5~2.0W Power Amplifier
Device Features
OIP3 = 51.0 dBm @ 1900 MHz
Gain = 19.5 dB @ 900 MHz
Output P1 dB = 33.3 dBm @ 1900 MHz
50 Ω Cascadable
Highly Reliable InGaP/GaAs HBT Technology
Lead-free/RoHS-compliant SOIC-8 SMT package
Typical Performance
1
Parameter
900
Gain
S11
S22
OIP3
2
P1dB
IS-95C ACPR
WCDMA ACLR
YY = Year, WW = Work week,
XX = Wafer Number
Preliminary Datasheet
Product Description
BeRex’s BT331 is a high power and a high
dynamic range amplifier in a low cost sur-
face mount package(SOIC-8) with a RoHS-
compliant, that incorporates reliable het-
erojunction-bipolar-transistor (HBT) de-
vices fabricated with InGaP GaAs technol-
ogy.
This device is designed for use where high
linearity is required and features high OIP3
and Power with low consumption current
(400mA) and requires a few external
matching components such as a DC block-
ing capacitors on the In/Output pin, a by-
pass capacitor and a RF choke for the out
port.
Applications
Base station Infrastructure/RFID
Commercial/Industrial/Military wireless system
Frequency
1900
14.0
-14.0
-11.0
51.0
33.3
-
23.3
5.0
2140
13.0
-15.0
-12.0
51.0
32.3
-
23.4
5.0
2450
12.0
-20.0
-10.0
50.0
31.0
-
21.5
5.3
2600
12.1
-19.0
-12.7
47.0
31.2
-
21.5
5.4
Unit
MHz
dB
dB
dB
dBm
dBm
dBm
dBm
dB
19.5
-16.0
-11.0
50.0
31.5
23.3
-
4.8
Noise Figure
1
2
Device performance _ measured on a BeRex evaluation board at 25°C, 50 Ω system.
OIP3 _ measured with two tones at an output of 20 dBm per tone separated by 1 MHz.
*ACPR CH Power is measured at 55dBc, ACLR CH Power _ measured at 50dBc.
*ACPR Test set-up: IS-95 CDMA, 9Ch. FWD, +885KHz offset, PAR 9.7dB at 0.01% Prob.
*ACLR Test set-up: 3GPP WCDMA, TM1+64DPCH, +5MHz offset, PAR 10.34 at 0.01% Prob.
Min.
Bandwidth
I
C
@ (Vc = 5V)
V
C
R
TH
700
360
Typical
410
5.0
10.0
Max.
2700
440
Unit
MHz
mA
V
°C/W
Application Circuits
Vcc
Bypass
RF Choke
Absolute Maximum Ratings
Parameter
Operating Case Temperature
Storage Temperature
Junction Temperature
Operating Voltage
Supply Current
Input RF Power
Rating
-40 to +85
-55 to +155
+220
+5.5
900
28
Unit
°C
°C
°C
V
mA
dBm
RF In
DC
Block
BT331
RF Out
DC
Block
*external matching circuit: refer to the page 4 to 16.
*Operation of this device above any of these parameters may result in permanent damage.
BeRex
●
website:
www.berex.com
●
email:
sales@berex.com
1
Specifications and information are subject to change and products may be discontinued without notice. BeRex is a trademark of BeRex.
All other trademarks are the property of their respective owners. © 2010 BeRex
Rev. C
BT331
700-2700 MHz 1.5~2.0W Power Amplifier
V-I Characteristics
BeRex SOT89 Evaluation Board
Preliminary Datasheet
*Dielectric constant _ 4.2 *
RF pattern width 52mil *31mil thick FR4 PCB
Typical Device Data
S-parameters (Vc=5V, Ic=400mA, T=25°C)
BeRex
●
website:
www.berex.com
●
email:
sales@berex.com
2
Specifications and information are subject to change and products may be discontinued without notice. BeRex is a trademark of BeRex.
All other trademarks are the property of their respective owners. © 2010 BeRex
Rev. C
BT331
700-2700 1.5~2.0W Power Amplifier
S-Parameter
(Vdevice = 5.0V, Icc = 400mA, T = 25 °C, calibrated to device leads)
Freq
[MHz]
100
500
1000
1500
2000
2500
3000
3500
4000
S11
[Mag]
0.919
0.949
0.941
0.929
0.895
0.847
0.735
0.757
0.910
S11
[Ang]
-155.332
168.743
156.029
143.815
131.767
120.721
118.042
125.918
122.065
S21
[Mag]
27.202
4.153
2.065
1.444
1.226
1.393
2.132
2.326
0.796
S21
[Ang]
171.888
90.122
78.875
71.101
65.133
57.189
32.334
-38.115
-127.288
S12
[Mag]
0.011
0.010
0.011
0.016
0.019
0.024
0.024
0.007
0.014
S12
[Ang]
81.778
35.600
47.384
48.347
50.235
47.782
2.709
-11.874
66.759
S22
[Mag]
0.335
0.805
0.833
0.840
0.838
0.839
0.848
0.904
0.495
S22
[Ang]
151.426
-179.714
170.693
163.704
158.159
153.001
147.516
140.189
79.167
Preliminary Datasheet
BeRex
●
website:
www.berex.com
●
email:
sales@berex.com
3
Specifications and information are subject to change and products may be discontinued without notice. BeRex is a trademark of BeRex.
All other trademarks are the property of their respective owners. © 2010 BeRex
Rev. C
BT331
700-2700 MHz 1.5~2.0W Power Amplifier
Application Circuit: 900 MHz
Schematic Diagram
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
L1
L2
R1
R2
BOM
1680
1608
1608
1608
1608
3216
100pF
100pF
100pF
1nF
1uF
10uF
NC
NC
1pF
3.3pF
10pF
8pF
18nH
8.2nH
4.3KΩ
100Ω
Toler-
ance
Preliminary Datasheet
R1
C7
C6
R2
C3 C4 C5
Vcc
C9
C8
1
8
7
±5%
±5%
±5%
±5%
±5%
±20%
L1
RF_OUT
C1
RF_IN
L2
C10
C11
2
3
4
6
5
C2
C12
1608
1608
1608
1608
1608
1608
1608
1608
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
PCB Diagram
1.
2.
Notice
PCB: 31mil thick FR4
Distance between the center of
the shunt Inductor(L2) and the
input pin of BT331 _
6.45 mm.
Distance between the center of
the series cap.(C10) and the
input pin of BT331 _
2.8mm.
Distance between the center of
the shunt cap.(C11) and the
input pin of BT331 _
1.5 mm.
Distance between the center of
the shunt cap.(C12) and the
output pin of BT331 _
8.25 mm.
3.
4.
5.
※
BT331 with both input and output ports
opened simultaneously may cause instabil-
ity. Please See an application note or con-
tact company for application support.
BeRex
●
website:
www.berex.com
●
email:
sales@berex.com
4
Specifications and information are subject to change and products may be discontinued without notice. BeRex is a trademark of BeRex.
All other trademarks are the property of their respective owners. © 2010 BeRex
Rev. C
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