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1998 Nov 18 2
Philips Semiconductors Product specification
FM/IF amplifier/demodulator circuit TDA1576T
FEATURES
• Fully balanced 4-stage limiting IF amplifier
• Symmetrical quadrature demodulator
• Field strength indication output for 1 mA ammeter
• Detune detector for side response and noise attenuation
• Detune voltage output
• Internal muting circuit
• 0° and 180° AF output signals
• Reference voltage output
• Electronic smoothing of the supply voltage.
GENERAL DESCRIPTION
The TDA1576T 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
ORDERING INFORMATION
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
supply voltage (pin 1) 7.5 8.5 15 V
I
P
supply current 10 16 23 mA
V
iIF(rms)
input sensitivity (RMS value) −3 dB before limiting 14 22 35 µV
S/N = 26 dB − 10 −µV
S/N = 46 dB − 55 −µV
V
oAF(rms)
AF output voltage (RMS value) 60 67 75 mV
THD total harmonic distortion with double
resonant circuits
− 0.02 − %
S/N signal-to-noise ratio V
i
>1mV − 72 − dB
α
AM
AM suppression − 50 − dB
RR ripple rejection f = 100 Hz 43 48 − dB
I
15
maximum indicator output current −−2mA
T
amb
operating ambient temperature −30 − +80 °C
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
TDA1576T SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1