TDA1576
Overview
- 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. QUICK REFERENCE DATA fo = 10.7 MHz; ∆f = ±22.5 kHz; fm = 400 Hz; QL = 20; 50 µs de-emphasis. SYMBOL VP IP ViIF(rms) PARAMETER supply voltage (pin 1) supply current input sensitivity (RMS value) VP = 8.5 V VP = 15 V S+N = 26 dB N S+N = 46 dB N VoAF(rms) THD AF output voltage (RMS value) total harmonic distortion single tuned circuit two tuned circuits S+N N signal plus noise-to-noise ratio ViIF > 1 mV (RMS); VP = 8.5 V ViIF > 1 mV (RMS); VP = 15 V αAM ∆fi ∆Vi IL Tamb AM suppression AFC offset drift field strength indication permissible indicator load current operating ambient temperature - - - - - - - - -30 0.1 0.02 76 80 50 ±3 90 - - - - - - - ±6 - 2 VP = 8.5 V VP = 15 V CONDITIONS - - - - - - MIN. 7.5 - 16 18 22 8 35 67 135 TYP. - - - - - - - GENERAL DESCRIPTION TDA1576 The TDA1576 is a monolithic integrated FM/IF amplifier circuit for use in mono and stereo FM-receivers of car radios or home sets. MAX. 20 V UNIT mA mA µV µV µV mV mV % % dB dB dB kHz dB mA °C -3 dB before limiting -
