ML3372EP 查看數據表（PDF） - LANSDALE Semiconductor Inc.
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ML3372EP Datasheet PDF : 19 Pages
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ML3371, ML3372
LANSDALE Semiconductor, Inc.
Legacy Applications Information
VCC = 4.0 Vdc
Figure 13. Typical Application for ML3372 at 45 MHz
RSSI Output
to Meter (Triplett – 100 kV)
R2
12 k
+ C9
10
RF Input
45 MHz C17
120
C18
75
L1
0.245 µH
Coilcraft
150–07J08
R3
100 k
C2 + R4
4.7
1.0 k
D1 1N5817 R5
4.7 k R6
VR1 (Squelch Control)
10 k
R14
C6
51 k
0.1
R1
C1 470
0.01
C3
C4
560
0.1 0.001 R7
R8
C5 4.7 k
0.001
3.3 k C7
0.022
C8
0.22
R9
510 k
16 15
14
13 12
11
10
9
VR2
10 k
Filter –
AF
Amp
Amp
Squelch Trigger
with Hysteresis
+
Demodulator
Mixer
Oscillator
10
Limiter
Amp
53 k
1
2
3
45
6
7
8
C16
0.01
Coilcraft
143–13J12
C10
30
C11
5.0
L2
0.84 µH
44.545
R13
MHz
1.0 k
C13
R10
0.1
1.8 k
C12
R11
51 k
C14
27
0.1
R12
4.3 k
muRata
CDB455C16
muRata
C15
CFU455D2
0.1
or
equivalent
AF Out
to Audio
Power Amp
Figure 14. RSSI Output versus RF Input
3.5
3.0
2.5
2.0
1.5
fRF = 10.7 MHz
1.0
VCC = 4.0 Vdc
Reference Figure 11
0.5
0
–120
–100
–80
–60
–40
–20
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–120
Figure 15. RSSI Output versus RF Input
fRF = 45 MHz
VCC = 4.0 Vdc
Reference Figure 13
–100
–80
–60
–40
–20
RF INPUT (dBm)
Page 14 of 19
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