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TDA9880 Datasheet(PDF) 4 Page - NXP Semiconductors |
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TDA9880 Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 40 page 1999 Jul 21 4 Philips Semiconductors Product specification Alignment-free multistandard vision and FM sound IF-PLL demodulator TDA9880 Notes 1. Values of video and sound parameters can be decreased at VP = 4.5 V. 2. The sound carrier frequencies (depending on TV standard) are attenuated by the integrated sound carrier traps (see Figs 13 to 18); H (s) is the absolute value of transfer function. 3. S/N is the ratio of black-to-white amplitude to the black level noise voltage (RMS value, pin 13). B = 4.2 MHz (M/N standard) or B = 5.0 MHz (B/G, I and D/K standard) weighted in accordance with “CCIR 567”. 4. The intercarrier output signal at pin 11 can be calculated by the following formula taking into account the internal video signal with 1.1 V (p-p) as a reference: where: = correction term for RMS value, = sound-to-picture carrier ratio at VIF input (pins 1 and 2) in dB, 6 dB = correction term of internal circuitry and ±3 dB = tolerance of video output and intercarrier output amplitude Vo(intc)(rms). Bintc(−3dB)(ul) upper limit −3 dB intercarrier bandwidth 7.5 9 − MHz Vo(AF)(8)(rms) audio output signal voltage at pin 8 (RMS value) 25 kHz FM deviation; 75 µs de-emphasis 400 500 600 mV THD8 total harmonic distortion at pin 8 − 0.15 0.5 % BAF(−3dB) −3 dB audio frequency bandwidth without de-emphasis; dependent on loop filter at pin 4 100 120 − kHz S/NW(AF) weighted signal-to-noise ratio of audio signal black picture 50 56 − dB white picture 45 51 − dB 6 kHz sine wave (black-to-white modulation) 40 46 − dB sound carrier subharmonics; f = 2.25 MHz ±3 kHz 35 40 − dB α AM(sup) AM suppression of FM demodulator 75 µs de-emphasis; AM: f = 1 kHz; m = 0.3 referenced to 25 kHz FM deviation 40 46 − dB PSRR8 power supply ripple rejection at pin 8 fripple = 70 Hz; see Fig.9 14 20 − dB ∆f FM frequency window of digital acquisition help for FM demodulator −±225 − kHz fref(15) frequency of reference signal at pin 15 − 4.0 − MHz Vref(15)(rms) amplitude of reference signal source at pin 15 (RMS value) operation as input terminal 80 − 400 mV SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT V o(intc)(rms) 1.1 V (p-p) 1 22 ----------- × 10 V iSC () V iPC () --------------- dB () 6 dB 3 dB ± + 20 ---------------------------------------------------------------- × = 1 22 ----------- V iSC () V iPC () --------------- dB () |
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