TDA2555

INTEGRATED CIRCUITS DATA SHEET TDA2555 TDA2557 Dual TV sound demodulator circuits Product specification File under Integrated Circuits, IC02 March 1986 Philips Semiconductors Product specification Dual TV sound demodulator circuits GENERAL DESCRIPTION TDA2555 TDA2557 The circuits incorporate two FM demodulator systems to perform the demodulator functions required in a dual sound carrier TV system for demodulating the sound carriers. The difference between TDA2555 and TDA2557 is the number of stages of the limiting amplifier. Eight (TDA2555) or five (TDA2557) stage limiting amplifier Quadrature demodulator for FM detection De-emphasis stage Output amplifier Mute function for each FM demodulator QUICK REFERENCE DATA Supply voltage (pins 13 and 15) Supply current (pins 13 and 15) AF output voltage (pins 2 and 8) Total harmonic distortion (note 1) Signal to weighted noise ratio PACKAGE OUTLINE 18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 19. VP IP Vo(rms) THD (S + N)/N typ. typ. typ. < typ. 12 24,5 600 0,1 70 V mA mV % dB March 1986 2 Philips Semiconductors Product specification Dual TV sound demodulator circuits TDA2555 TDA2557 Fig.1 Block diagram. TDA2555 with 8-stage limiting amplifier; TDA2557 with 5-stage limiting amplifier. March 1986 3 Philips Semiconductors Product specification Dual TV sound demodulator circuits RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) Supply voltage (pins 13 and 15) Total power d...