BGR420
NPN Silicon RF Transistor With Bias Circuitry
Data Sheet, Rev. 1.0, Juni 2008
Small Signal Discretes
Edition 2008-06-06
Published by Infineon Technologies AG,
85579 Neubiberg, Germany
© Infineon Technologies AG 2008.
All Rights Reserved.
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characteristics.
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circuits, descriptions and charts stated herein.
Information
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BGR420
Data Sheet 3 Rev. 1.0, 2008-06-06
Trademarks
SIEGET® is a registered trademark of Infineon Technologies AG.
BGR420, NPN Silicon RF Transistor With Bias Circuitry
Revision History: 2008-06-06, Rev. 1.0
Prevision History: no previous version
Page Subjects (major changes since last revision)
Data Sheet 4 Rev. 1.0, 2008-06-06
BGR420
NPN Silicon RF Transistor With Bias Circuitry*
1 NPN Silicon RF Transistor With Bias Circuitry*
2 Description
The BGR420 is a monolithic silicon amplifier with a NPN silicon RF transistor and integrated resistors for biasing.
Note: ESD (Electrostatic discharge) sensitive device, observe handling precaution!
Figure 1 Circuit diagram
Note: Due to design there is an additional diode between emitter and collector, which does not affect normal
operation for common emitter configuration.
Features
• Noise figure NF = 1.5 dB at 0.4 GHz
•Gain
S21 =26dB at 0.4GHz
• On chip bias circuitry, 13 mA bias current at VCC =3.6V;
VBB =2.8V
• SIEGET ® 25 GHz fT-Line
• Pb-free (RoHS compliant) package
* Short term description
Applications
•LNAs
Type Package Marking
BGR420 SOT343 AWs
12
3
4
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BGR420
Description
Data Sheet 5 Rev. 1.0, 2008-06-06
2.1 Maximum Ratings
Note: All Voltages refer to GND-node
Note: Stresses above the max. values listed here may cause permanent damage to the device. Exposure to
absolute maximum rating conditions even only for a short moment may affect device reliability. Maximum
ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the
integrated circuit. Absolute maximum ratings typically differ heavily from recommended operation conditions
2.2 Thermal Resistance
Table 1 Pinning table
Pin Function
1RFIN
2GND
3 RFOUT (VCC)
4VBB
Table 2 Maximum ratings
Parameter Symbol Value Unit
Current at pin VCC ICC 25 mA
Voltage at pin VCC VCC 13 V
Current at pin VBB IBB 2.2 mA
Voltage at pin VBB VBB 8V
Current at pin RFIN IIN 3mA
Voltage at pin RFIN VIN 5V
Total power dissipation1)
TS= 115 °C
1) TS is measured on the emitter (GND) lead at the soldering point to the pcb
Ptot 120 mW
Operation junction temperature range Tjo -65... 150 °C
Storage junction temperature range Tjstg -65... 150 °C
Table 3 Thermal Resistance
Parameter Symbol Value Unit
Junction - soldering point1)
1) For calculation of RthJA please refer to Application Note Thermal Resistance.
RthJS ≤290 K/W
Data Sheet 6 Rev. 1.0, 2008-06-06
BGR420
Electrical Characteristics
3 Electrical Characteristics
Figure 2 BGR420 test circuit
Table 4 DC characteristics at TA= 25 °C, unless otherwise specified
Parameter Symbol Values Unit Note /
Test Condition
Min. Typ. Max.
VCC-GND cutoff current ICC 10 µAVCC =13V, IBB =0,
VIN =0
Current at pin VCC ICC 7 1320mAVBB =2.8V, IIN =0,
VCC =3.6V
Table 5 AC characteristics (measured in test circuit Figure 2; verified by random sampling)
TA=25°C, VBB =2.8V, VCC =3.6V, Z0=50Ω, unless otherwise specified
Parameter Symbol Values Unit Note /
Test Condition
Min. Typ. Max.
Insertion power gain S21 26.0
15.5
dB f=0.4GHz
f=1.8GHz
Reverse isolation S12 -32.5
-23.4
dB f=0.4GHz
f=1.8GHz
Noise figure, ZS=ZSopt NF 1.5
1.7
dB f=0.4GHz
f=1.8GHz
Third order intercept point at the
output1)
1) OIP3 value depends on termination of all intermodulation frequency components. Termination used for this measurement
is 50 Ω from 0.1 MHz to 6 GHz.
OIP321
23
dBm f=0.4GHz
f=1.8GHz
1 dB compression point at the output OP-1dB 5.5
7.4
dBm f=0.4GHz
f=1.8GHz
Return loss input S11 -7.3
-11
dB f=0.4GHz
f=1.8GHz
Return loss output S22 -2.5
-9.5
dB f=0.4GHz
f=1.8GHz
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BGR420
Package Information
Data Sheet 7 Rev. 1.0, 2008-06-06
4 Package Information
Figure 3 Package Outline SOT343
Figure 4 Footprint of SOT343
Figure 5 Tape of SOT343
SOT343-PO
V08
1.25
±0.1
0.1 MAX.
2.1
±0.1
0.15
+0.1
-0.05
0.3
+0.1
2
±0.2
±0.1
0.9
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2
4
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0.2
1.3
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-0.05
0.15
0.1
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0.1
0.1 MIN.
0.6
SOT343-FP
V08
0.8
1.6
1.15
0.9
SOT323-TP V02
0.2
4
2.15
8
2.3
1.1
Pin 1