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SAA6579 Datasheet(PDF) 6 Page - NXP Semiconductors |
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SAA6579 Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 16 page 1997 Feb 24 6 Philips Semiconductors Product specification Radio Data System (RDS) demodulator SAA6579 CHARACTERISTICS VDDA =VDDD =5V; Tamb =25 °C and measurements taken in Fig.1; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VDDA analog supply voltage (pin 5) 3.6 5.0 5.5 V VDDD digital supply voltage (pin 12) 3.6 5.0 5.5 V Itot total supply current I5 +I12 − 6 − mA Vref reference voltage (pin 3) VDDA =5V − 2.5 − V MPX input (signal before the capacitor on pin 4) Vi MPX(rms) RDS amplitude (RMS value) ∆f= ±1.2 kHz RDS; ∆f= ±3.5 kHz ARI; see Fig.5 1 −− mV Vi MPX(p-p) maximum input signal capability (peak-to-peak value) f=57 ±2 kHz 200 −− mV f < 50 kHz 1.4 −− V f < 15 kHz 2.8 −− V f > 70 kHz 3.5 −− V R4-6 input resistance f = 0 to 100 kHz 40 −− k Ω G8-4 signal gain f = 57 kHz 17 20 23 dB 57 kHz band-pass filter fc centre frequency Tamb = −40 to +85 °C 56.5 57.0 57.5 kHz B −3 dB bandwidth 2.5 3.0 3.5 kHz G stop band gain ∆f= ±7 kHz 31 −− dB f < 45 kHz 40 −− dB f < 20 kHz 50 −− dB f > 70 kHz 40 −− dB Ro(8) output resistance (pin 8) f = 57 kHz − 26 −Ω Comparator input (pin 7) Vi(rms) minimum input level (RMS value) f = 57 kHz − 110 mV Ri input resistance 70 110 150 k Ω Oscillator input (pin 13) VIH HIGH level input voltage VDDD = 5.0 V 4.0 −− V VIL LOW level input voltage VDDD = 5.0 V −− 1.0 V II input current VDDD = 5.5 V −− ±1 µA |
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