MBC13900NT1 Freescale Semiconductor, MBC13900NT1 Datasheet - Page 10

• Manufacturer Part Number: MBC13900NT1
• Description: TRANS RF NPN LO NOISE SOT-343
• Manufacturer: Freescale Semiconductor

Specifications of MBC13900NT1

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (max): 6.5V
• Frequency - Transition: 15GHz
• Noise Figure (db Typ @ F): 0.8dB ~ 1.1dB @ 900MHz ~ 1.9GHz
• Gain: 15dB ~ 22dB
• Power - Max: 188mW
• Dc Current Gain (hfe) (min) @ Ic, Vce: 100 @ 5mA, 2V
• Current - Collector (ic) (max): 20mA
• Mounting Type: Surface Mount
• Package / Case: SC-70-4, SC-82-4, SOT-323-4, SOT-343
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Applications Information
Typical performance that can be expected from this circuit at 3.0 and 3.5 V V
component values can be changed to enhance the performance of a particular parameter but usually at the
expense of another. Gain can be improved by sacrificing stability (R3 and R5). Input return loss can be
sacrificed to improve noise figure. IIP3 can be improved by increasing emitter degeneration (L3) and bias
current (R2). Unused traces are available on the PCB to add emitter degeneration at leads 1 and 3 of the
device.
10
V
3.0
3.5
CC
RF In
R6
C3
V
CC
C3
(mA)
C5
5.0
6.1
I
C
C
7
Table 5. Typical 900 MHz LNA Performance
L4
Gnd
R2
Figure 19. 900 MHz LNA Board Layout
Figure 18. 900 MHz LNA Schematic
(dB)
1.21
MBC13900 Technical Data, Rev. 1.1
1.2
NF
R3
L1
R4
C1
C4
50 Ω Insertion
C2
Gain (dB)
19.7
20.2
R2
Component Value
C1
C2
C3
C4
C5
C6
L1
L2
L3
R1
R2
R3
R4
R5
R6
Vias
PCB
R3
Output IP3
(dBm)
17.6
15
1.0 µF
3.3 pF
12 pF
0.01 µF
1.0 µF
0.3 pF
6.8 nH
5.6 nH
<0.5 nH
133 Ω
49.9 kΩ
16.5 Ω
0 Ω
3.9 Ω
0 Ω
FR4
C1
V
CC
Comments
Optional Bypassing
DC Block and S
DC Block and S
Broadband bypass
Broadband bypass
IIP3 improvement
Toko LL1608-FS, match, bias
Toko LL1608-FH, match, bias
Emitter L on board (distance to GND vias)
Bias
Bias
Stability, S
Jumper
Stability, S
Jumper
D = 15 mil
ε
R5
L2
R1
r
=4.5, h=25 mil, t=1.75 mil
Input Return
Loss (dB)
C2
CC
10.1
10.8
22
22
is listed in
22
11
Freescale Semiconductor
C4
RF Out
Output Return
Loss (dB)
Table
10.2
10.8
5. The