START540TR STMicroelectronics, START540TR Datasheet - Page 8
START540TR
Manufacturer Part Number
START540TR
Description
RF Bipolar Small Signal NPN High Frequency
Manufacturer
STMicroelectronics
Datasheet
1.START540TR.pdf
(10 pages)
Specifications of START540TR
Dc Collector/base Gain Hfe Min
100
Mounting Style
SMD/SMT
Configuration
Single
Transistor Polarity
NPN
Collector- Emitter Voltage Vceo Max
4.5 V
Emitter- Base Voltage Vebo
1.5 V
Continuous Collector Current
0.04 A
Power Dissipation
180 mW
Maximum Operating Temperature
+ 150 C
Package / Case
SOT-323-4
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Figure 11: Stability Factor M ,k, The Magnitude Of The S-matrix
Figure 12 is a partial representation of the LNA output spectrum. f
equal amplitude input test tones. For this LNA we use -28dBm input power in order to reach -13dBm of
output power for each test tones. Other signals besides f
device behavior.
Figure 12: In-band Third Order Intermodulation Product Distorsion
8/10
AN1465 - APPLICATION NOTE
4.5
3.5
2.5
1.5
0.5
5
4
3
2
1
0
0
-87
-87
-13
-13
f
f
2-
2-
f
f
1000
1
1
2f
2f
1-
1-
2000
f
f
2
2
3
3
3000
f (Mhz)
f
f
1
1
1
and f
f
f
4000
f
f
2
2
2
are generated as a result of non-linear
1
=1900MHz and f
2f
2f
5000
2-
2-
f
f
1
1
frequency
frequency
6000
2
=1900,4MHz are