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TDA8742 Datasheet(PDF) 11 Page - NXP Semiconductors |
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TDA8742 Datasheet(HTML) 11 Page - NXP Semiconductors |
11 / 21 page October 1994 11 Philips Semiconductors Product specification Satellite sound circuit with noise reduction TDA8742; TDA8742H Secondary channels 1 and 2 - HF inputs pins 2, 4, 6, 8, 10, 12, 14 and 16 (1, 3, 5, 7, 9, 11, 40 and 42) and limiters VIN1,IN2(rms) input sensitivity (RMS value) S/N(A) = 40 dB − 0.8 1.5 mV Vi(rms) input signal level (RMS value) −− 200 mV Ri input resistance 260 330 380 Ω Secondary channels 1 and 2 - PLL FM demodulators (input selector in position 1) fCCO1 free running frequency PLL1 − 10.7 − MHz fCCO2 free running frequency PLL2 − 10.52 − MHz ∆fOS1/2 lock range of PLLs note 3 10 − 11.5 MHz RS1, S2 series resistance for optimum frequency response adjustment 0 0.68 2.2 k Ω VCDCL,CDCR(rms) PLL output voltage pins 40 and 42 (36 and 38) (RMS value) pins to be left open-circuit − 9 − mV ∆VCDCL,CDCR spread of PLL output voltage over lock range −− ±1dB Secondary channels - overall performance of LPF and NR (output selectors in position 1) Ro output resistance for 75 µs de-emphasis pins 36 and 32 (32 and 28) 1.9 2.3 2.6 k Ω Ri input resistance of output amplifiers pins 35 and 33 (31 and 29) 95 150 200 k Ω VOL,OR output voltage level pins 25 and 24 (21 and 20) note 4 −8 −6 −4 dBV UBS unbalance voltage outputs pins 25 and 24 (21 and 20) note 4 −1 − +1 dB THD total harmonic distortion note 4 − 0.1 0.5 % S/N(A) signal-to-noise ratio A-weighted; note 4 72 80 − dB Ro output resistance pins 25 and 24 (21 and 20) note 4 92 125 150 Ω MUTEatt mute attenuation output selector in position 6; note 4 74 −− dB α S/S crosstalk attenuation between secondary channels note 5 − 74 − dB αM/S crosstalk attenuation from main channel to secondary note 6 − 74 − dB Voffset(DC) DC offset voltage on attack/recovery capacitors pins 29, 39 (25, 35) all PLLs locked; ∆f=0 14 16 20 mV SVRR supply voltage ripple rejection VRR = 100 mV; fi =70Hz − 25 − dB SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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