Philips TDA3856 free download

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INTEGRATED CIRCUITS DATA SHEET TDA3856 Quasi-split sound processor for all standards Product specification File under Integrated Circuits, IC02 June 1994 Philips Semiconductors Product specification Quasi-split sound processor for all standards FEATURES · Quasi-split sound processor for all standards e. g. B/G (FM sound) and L (AM sound) · Automatic muting of the AF2 signal (at B/G) by the input level · AM signal processing for L standard and switching over the audio signal · Layout-compatible with TDA3858 (32 pins) and TDA3857 (20 pins). GENERAL DESCRIPTION TDA3856 Separate symmetrical IF inputs for FM or AM sound. Gain controlled wideband IF amplifier, input select switch. AGC generation due to peak sync for FM or mean signal level for AM. Reference amplifier for the regeneration of the vision carrier. Optimized limiting amplifier for AM suppression in the regenerated vision carrier signal and 90° phase shifter. Intercarrier mixer for FM sound, output with low-pass filter. Separate signal processing for 5.5 and 5.74 MHz intercarriers. Wide supply voltage range, only 300 mW power dissipation at 5 V. QUICK REFERENCE DATA SYMBOL VP IP Vi IF Vo(RMS) Vo(RMS) THD supply current IF input sensitivity (-3 dB) audio output signal for FM (B/G) audio output signal for AM (L) total harmonic distortion for FM for AM S/N (W) weighted signal-to-noise ratio for FM for AM ORDERING INFORMATION PACKAGE EXTENDED TYPE NUMBER TDA3856 TDA3856T Note 1. 2. SOT234-1; 1996 November 28. SOT137-1; 1996 November 28. PINS 24 24 PIN POSITION shrink DIL SO MATERIAL plastic plastic CODE SOT234(1) SOT137(2) - - 68 56 - - dB dB - - 0.5 1 - - % % PARAMETER supply voltage (pin 21) - - - - MIN. 4.5 5 60 70 1 0.6 TYP. MAX. 8.8 72 100 - - UNIT V mA µV V V June 1994 2 Philips Semiconductors Product specification Quasi-split sound processor for all standards TDA3856 Fig.1 Block diagram (B/G and L). June 1994 3 Philips Semiconductors Product specification Quasi-split sound processor for all standards PINNING SYMBOL AMIF1 AMIF2 CAGC CAM MODE FM2R1 FM2R2 AF2 AF1 FM1R1 FM1R2 VC-R1 VC-R2 CAFAM FM1| CAF1 ICO CAF2 FM2I GND VP CREF FMIF1 FMIF2 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DESCRIPTION AM IF difference input 1 for L standard (32.4 MHz) AM IF difference input 2 for L standard (32.4 MHz) charge capacitor for AGC (FM and AM) charge capacitor for AM AGC 3-state input for standard select reference circuit for FM2 (5.74 MHz) reference circuit for FM2 (5.74 MHz) AF2 output (AF out of 5.74 MHz) AF1 output (AF out of 5.5 MHz or AM) reference circuit for FM1 (5.5 MHz) reference circuit for FM1 (5.5 MHz) reference circuit for the vision carrier (38.9 MHz) reference circuit for the vision carrier (38.9 MHz) DC decoupling capacitor for AM demodulator (AF-AM) intercarrier input for FM1 (5.5 MHz) DC decoupling capacitor for FM1 demodulator (AF1) intercarrier output signal (5.5/5.74 MHz) DC decoupling capacitor for FM2 demodulator (AF2) intercarrier input f