ML3371, ML3372
LANSDALE Semiconductor, Inc.
ML3372 PIN FUNCTION DESCRIPTION
OPERATING CONDITIONS
VCC = 4.0 Vdc, RFIn = 100
µV,
fmod = 1.0 kHz, fdev = 3.0 kHz. ML3372 at f RF = 45 MHz (see Figure 13).
Pin
5
Symbol
IFIn
5
IFIn
6
6
DEC1
DEC
60
µA
53 k
IF Decoupling. External 0.1
µF
capacitors connected to VCC.
Internal Equivalent
Circuit
Description
IF Amplifier Input
Waveform
7
IFOut
VCC
7
IFOut
IF Amplifier Output Signal level is
typically 300 mVpp.
50
µA
120
µA
8
QuadIn
8
QuadIn
VCC
Quadrature Detector Input. Signal
level is typically 150 mVpp.
10
50
µA
9
RA
Recovered Audio. This is a composite
FM demodulated output having signal
and carrier components. Typical level
is 800 mVpp.
VCC
200
9
RAOut
The filtered recovered audio has the
carrier signal removed and is typically
500 mVpp.
100
µA
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