TDA1579T

INTEGRATED CIRCUITS DATA SHEET TDA1579 TDA1579T Decoder for traffic warning (VWF) radio transmissions Product specification File under Integrated Circuits, IC01 May 1992 Philips Semiconductors Product specification Decoder for traffic warning (VWF) radio transmissions GENERAL DESCRIPTION The TDA1579 decoder is for radio transmissions having 57 kHz amplitude-modulated subcarriers as used in the German 'Verkehrs Warnfunk' (VWF) traffic warning system. Features TDA1579 TDA1579T Selective subcarrier amplifier (57 kHz) with gain control Transmitter identification signal (SK) decoder Area identification signal (BK) and announcement identification signal (DK) active filtering BK and DK decoders (Schmitt trigger with switched hysteresis) BK and DK switch-on/switch-off delay circuits Driver output for SK indicator (LED) SK and BK control outputs. QUICK REFERENCE DATA Measured in Fig.1 at ViSK = 8 mV; f = 57 kHz amplitude modulated with fm = 34.95 Hz and m = 60% for ‘BK-traffic area C’ signal; or with fm = 125 Hz and m = 30% for DK signal. PARAMETER Supply voltage Supply current Nominal input voltage Input impedance Control level Input voltage SK switch-on threshold level SK switch hysteresis SK switch-on delay SK switch-off delay DK switch-on threshold level DK switch hysteresis DK switch-on delay DK switch-off delay Ambient operating temperature range PACKAGE OUTLINES TDA1579: 18-lead DIL; plastic (SOT102); SOT102-1; 1996 August 12. TDA1579T: 20-lead mini-pack; plas...