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5 / 58 page 2004 Aug 25 5 Philips Semiconductors Product specification I2C-bus controlled multistandard alignment-free IF-PLL demodulator with FM radio TDA9887 Notes 1. Values of video and sound parameters can be decreased at VP = 4.5 V. 2. For applications without I2C-bus, the time constant (R × C) at the supply must be >1.2 µs (e.g. 1 Ω and 2.2 µF). 3. Condition: luminance range (5 steps) from 0 % to 100 %. 4. AC load: CL < 20 pF and RL >1kΩ. The sound carrier frequencies (depending on the TV standard) are attenuated by the integrated sound carrier traps (see Figs 15 to 20; H (s) is the absolute value of transfer function). 5. S/NW is the ratio of the black-to-white amplitude to the black level noise voltage (RMS value measured on pin CVBS). B = 5 MHz weighted in accordance with “CCIR 567”. Audio part Vo(AF)(rms) AF output voltage (RMS value) 27 kHz FM deviation; 50 µs de-emphasis 430 540 650 mV THD total harmonic distortion of audio signal FM: 27 kHz FM deviation; 50 µs de-emphasis − 0.15 0.50 % AM: m = 54 % − 0.5 1.0 % BAF(−3dB) −3 dB AF bandwidth without de-emphasis; dependent on FM-PLL filter 80 100 − kHz S/NW(AF) weighted signal-to-noise ratio of audio signal FM: 27 kHz FM deviation; 50 µs de-emphasis; vision carrier unmodulated 52 56 − dB AM: m = 54 % 45 50 − dB αAM(sup) AM suppression of FM demodulator 50 µs de-emphasis; AM: f = 1 kHz and m = 54 %; referenced to 27 kHz FM deviation 40 46 − dB PSRRAUD power supply ripple rejection on pin AUD fripple = 70 Hz; see Fig.6 for AM 20 26 − dB for FM 14 20 − dB Vo(intc)(rms) IF intercarrier output level (RMS value) QSS mode; SC1; SC2 off 90 140 180 mV L standard; without modulation 90 140 180 mV intercarrier mode; PC/SC1 = 20 dB; SC2 off; note 6 − 75 − mV Radio part AFCstps AFC control steepness definition: ∆IAFC/∆fRIF 0.85 1.05 1.25 µA/kHz Vi(FM)(rms) IF intercarrier input level on pin FMIN for gain controlled operation of FM-PLL (RMS value) radio mode and FM external mode; see Table 16 1 − 100 mV Reference frequency fref reference signal frequency note 7 − 4 − MHz Vref(rms) reference signal voltage (RMS value) operation as input terminal 80 − 400 mV SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
Số phần tương tự - TDA9887T/V4 |
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Mô tả tương tự - TDA9887T/V4 |
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