ML3372 데이터 시트보기 (PDF) - LANSDALE Semiconductor Inc.
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ML3372 Datasheet PDF : 19 Pages
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ML3371, ML3372
LANSDALE Semiconductor, Inc.
DC ELECTRICAL CHARACTERISTICS (VCC = 4.0 Vdc, TA = 25°C, unless otherwise noted)
Characteristic
Pin
Symbol
Min
Typ
Max
Unit
Drain Current (No Input Signal)
Squelch Off, Vsq = 2.0 Vdc
Squelch On, Vsq = 0 Vdc
Squelch Off, VCC = 2.0 to 9.0 V
4
mA
lcc1
–
3.2
4.2
lcc2
–
3.6
4.8
dlcc1
–
1.0
2.0
Detector Output (No Input Signal)
DC Voltage, V8 = VCC
9
V9
Vdc
0.9
1.6
2.3
Filter Output (No Input Signal)
DC Voltage
Voltage Change, VCC = 2.0 to 9.0 V
11
Vdc
V11
1.5
2.5
3.5
dV11
2.0
5.0
8.0
Trigger Hysteresis
–
Hys
34
57
80
mV
Figure 1. ML3371 Functional Block Diagram and Test Fixture Schematic
RF Input
RSSI Output
VCC = 4.0 Vdc
C1
0.01
51 k
0.1
51
Mute
16
15
14
13
Squelch Trigger
with Hysteresis
Mixer
Oscillator
1
2
3
4
15
FilterIn
SqIn FilterOut
1.0 µF
1.0 µF 470
510 k
0.01
8.2 k
12
11
10
9
Filter –
Amp
AF
+
Amp
Limiter
Amp
Demodulator
10
51 k
53 k
1.8 k
5
6
7
8
22
57.6575
MHz
0.33
0.001
muRata
CFU455D2
or
equivalent
0.1
0.1
20 k
0.1
AF Out
to Audio
Power Amp
Quad Coil TOKO
2A6597 HK (10 mm)
or
7MC–8128Z (7 mm)
Page 3 of 19
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