Datenblatt-Suchmaschine für elektronische Bauteile |
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TDA3856T Datenblatt(PDF) 9 Page - NXP Semiconductors |
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TDA3856T Datenblatt(HTML) 9 Page - NXP Semiconductors |
9 / 17 page June 1994 9 Philips Semiconductors Product specification Quasi-split sound processor for all standards TDA3856 Notes to the characteristics 1. Crosstalk attenuation of IF input switch, measured at R12-13 = 470 Ω (instead of LC circuit); input signal Vi (RMS) = 20 mV (pins 23-24). AGC voltage V3 set to a value to achieve Vo (RMS) = 20 mV (pins 12-13). After switching (V5 = 0 V) measure attenuation. IF coupling with OFWG3203 and OFWL9350 (Siemens). 2. Spurious intercarrier AM: m = (A − B)/A (A = signal at sync; B = signal with 100% picture modulation). 3. For larger current: RL > 2.2 kΩ (pin 8 or 9 to GND) in order to increase the bias current of the output emitter follower. AF signal switches input signals: AM carrier into pin 1, 2 see part AM demodulator FM intercarrier into pin 15 see part FM demodulator no signal in pin 19 (AF2) the output signals are related to the signals described in the demodulator parts. Vo/Vomute AF2 mute attenuation (pin 8) B/G mode; V5 =VP 70 −− dB VoAM/VoFM AF1 FM signal (pin 9) attenuation of unwanted FM signal L mode; V5 =0; FM: modulated; AM: unmodulated 70 −− dB VoFM/VoAM AF1 AM signal (pin 9) attenuation of unwanted AM signal B/G mode; V5 =VP; FM: unmodulated; AM: modulated 70 −− dB dV8, 9 DC jump at the AF outputs switching to FM or AM sound or Mute − 525 mV AF performance for FM operation (standard B/G) input signals: B/G IF input signal (pin 23, 24) unmodulated sound carriers different video modulation (100%) the output signals are related to the signals described in the demodulator parts. (S+N)/N(W) weighted signal-to-noise ratio CCIR468-3; de-emphasis 50 µs black picture fi = 5.5 MHz 59 63 − dB 2T/20T pulses with white bar fi = 5.5 MHz 57 61 − dB 6 kHz sine wave, B/W-modulated fi = 5.5 MHz 52 56 − dB 250 kHz square wave, B/W-modulated fi = 5.5 MHz 50 54 − dB black picture fi = 5.742 MHz 57 61 − dB 2T/20T pulses with white bar fi = 5.742 MHz 55 59 − dB 6 kHz sine wave, B/W-modulated fi = 5.742 MHz 50 54 − dB 250 kHz square wave, B/W-modulated fi = 5.742 MHz 48 52 − dB Ripple rejection of the AF outputs (B/G and L standard) RR ripple rejection Vripple on VP /Vripple on Vout VR(p-p) = 200 mV; fR =70Hz 30 40 − dB SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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