TDA1576 Просмотр технического описания (PDF) - Philips Electronics
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TDA1576 Datasheet PDF : 16 Pages
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Philips Semiconductors
FM/IF amplifier/demodulator circuit
Product specification
TDA1576
FEATURES
• Symmetrical limiting IF amplifier
• Symmetrical quadrature demodulator
• Internal muting circuit
• Symmetrical AFC output
• Field strength indication output
• Detune detector
• Reference voltage output
• Electronic smoothing of the supply voltage
• Standby on/off switching circuit.
GENERAL DESCRIPTION
The TDA1576 is a monolithic integrated FM/IF amplifier
circuit for use in mono and stereo FM-receivers of car
radios or home sets.
QUICK REFERENCE DATA
fo = 10.7 MHz; ∆f = ±22.5 kHz; fm = 400 Hz; QL = 20; 50 µs de-emphasis.
SYMBOL
PARAMETER
CONDITIONS
MIN.
VP
IP
ViIF(rms)
supply voltage (pin 1)
supply current
input sensitivity (RMS value)
7.5
VP = 8.5 V
−
VP = 15 V
−
−3 dB before limiting −
S------N+-----N--- = 26 dB
−
S------N+-----N--- = 46 dB
−
VoAF(rms)
THD
S------N+-----N---
αAM
∆fi
∆Vi
IL
Tamb
AF output voltage (RMS value)
total harmonic distortion
single tuned circuit
two tuned circuits
signal plus noise-to-noise ratio
AM suppression
AFC offset drift
field strength indication
permissible indicator load current
operating ambient temperature
VP = 8.5 V
−
VP = 15 V
−
−
−
ViIF > 1 mV (RMS); −
VP = 8.5 V
ViIF > 1 mV (RMS); −
VP = 15 V
−
−
−
−
−30
TYP.
−
16
18
22
8
35
67
135
0.1
0.02
76
80
50
±3
90
−
−
MAX.
20
−
−
−
−
−
−
−
−
−
−
−
−
±6
−
2
+80
UNIT
V
mA
mA
µV
µV
µV
mV
mV
%
%
dB
dB
dB
kHz
dB
mA
°C
ORDERING INFORMATION
TYPE
NUMBER
TDA1576
PACKAGE
NAME
DESCRIPTION
DIP18 plastic dual in-line package; 18 leads (300 mil)
VERSION
SOT102-1
1998 Nov 18
2
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