Philips TDA2545a free download

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INTEGRATED CIRCUITS DATA SHEET TDA2545A Quasi-split-sound circuit Product specification File under Integrated Circuits, IC02 February 1985 Philips Semiconductors Product specification Quasi-split-sound circuit GENERAL DESCRIPTION TDA2545A The TDA2545A is a monolithic integrated circuit for quasi-split-sound processing in television receivers. Features · 3-stage gain controlled i.f. amplifier · A.G.C. circuit · Reference amplifier and limiter amplifier for vision carrier (V.C.) processing · Linear multiplier for quadrature demodulation QUICK REFERENCE DATA Supply voltage (pin 11) Supply current (pin 11) Minimum i.f. vision carrier input voltage (r.m.s. value) Output voltage; 5,5 MHz (r.m.s. value) Output voltage; 5,742 MHz (r.m.s. value) I.F. control range Signal-to-weighted-noise (rel. to 1 kHz; 30 kHz deviation) at 5,5 MHz at 5,742 MHz PACKAGE OUTLINES 16-lead DIL; plastic (SOT38); SOT38-1; 1996 November 19. for 2T/20T pulses with white bars S + W/W S + W/W typ. typ. 58 56 dB dB VP = V11-13 IP = I11 VVC1-16(rms) V12-13(rms) V12-13(rms) Gv typ. typ. typ. typ. typ. typ. 12 45 150 100 45 64 V mA µV mV mV dB February 1985 2 Philips Semiconductors Product specification Quasi-split-sound circuit TDA2545A (1) I.F. signal: vision carrier (V.C.) and sound carrier (S.C.). Fig.1 Block diagram. RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) Supply voltage (pin 11) Storage temperature range Operating ambient temperature range VP = V11-13 Tstg Tamb max. -25 0 to to 13,2 + 150 + 70 V °C °C February 1985 3 Philips Semiconductors Product specification Quasi-split-sound circuit TDA2545A CHARACTERISTICS VP = V11-13 = 12 V; Tamb = 25 °C; measured at fVC = 38,9 MHz, fSC1 = 33,4 MHz, fSC2 = 33,158 MHz: Vision carrier (V.C.) modulated with different video signals (see below); modulation depth 100% (proportional to 10% residual carrier). Vision carrier amplitude (r.m.s. value) is VVC = 10 mV. Vision-to-sound carrier ratios are VC/SC1 = 13 dB and VC/SC2 = 20 dB. Sound carriers (SC1, SC2) modulated with f = 1 kHz and deviation f = ± 30 kHz. For measuring circuit see Fig.2; unless otherwise specified. PARAMETER Supply (pin 11) Supply voltage Supply current I.F. amplifier Input voltage for start of gain control (intercarrier signals -3 dB) Input voltage for end of gain control (intercarrier signals + 1 dB) I.F. gain control range Control voltage range (see Fig.3) Input resistance Input capacitance Intercarrier generation Output voltage; 5,5 MHz (r.m.s. value) Output voltage; 5,742 MHz (r.m.s. value) D.C. output voltage Allowable d.c. load resistance at the output Allowable output current Intercarrier signal-to-noise (see note 1) (measured behind the FM demodulators) weighted according to CCIR 468-2, quasi-peak a. 2T/20T pulses with white bars (see also Fig.4) at 5,5 MHz at 5,742 MHz b. 6 kHz sinewave at 5,5 MHz at 5,742 MHz c. black level (sync pulses only) at 5,5 MHz at 5,742 MHz Note 1. Incidental phase on the visi