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TDA9851T Datasheet(PDF) 7 Page - NXP Semiconductors |
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TDA9851T Datasheet(HTML) 7 Page - NXP Semiconductors |
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7 / 20 page  1997 Nov 12 7 Philips Semiconductors Product specification I2C-bus controlled economic BTSC stereo decoder TDA9851 CHARACTERISTICS All voltages are measured relative to GND; VCC =9V; Rs = 600 Ω; AC-coupled; RL =10kΩ; CL = 2.5 nF; fmod = 1 kHz mono signal; composite input voltage 250 mV (RMS) for 100% modulation L + R (25 kHz deviation); Tamb =25 °C; see Fig.1; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VCC supply voltage 8 9 9.5 V ICC supply current − 30 40 mA Input stage Vi(max)(rms) maximum input voltage (RMS value) 2 −− V Zi input impedance 20 25 30 k Ω Stereo decoder HR headroom for L + R, L and R fmod = 300 Hz; THD < 15% 9 −− dB Vpil(rms) nominal stereo pilot voltage (RMS value) − 50 − mV Vth(on)(rms) pilot threshold voltage stereo on (RMS value) −− 35 mV Vth(off)(rms) pilot threshold voltage stereo off (RMS value) 15 −− mV hys hysteresis − 2.5 − dB Vo(rms) output voltage (RMS value) 100% modulation L + R; fmod = 300 Hz − 500 − mV αcsL,R stereo channel separation L and R 14% modulation; fL = 300 Hz; fR = 3 kHz − 20 − dB THDL,R total harmonic distortion L and R 100% modulation L or R; fmod = 1 kHz − 0.2 1.0 % S/N signal-to-noise ratio mono mode; referenced to 500 mV output signal CCIR 468-2 weighted; quasi peak 50 60 − dB DIN noise weighting filter (RMS value) − 73 − dBA Stereo decoder, oscillator (VCXO); note 1 fo nominal VCXO output frequency (32fH) with nominal ceramic resonator − 503.5 − kHz ∆f fr spread of free-running frequency with nominal ceramic resonator 500.0 − 507.0 kHz ∆fcr capture range frequency nominal pilot ±190 ±265 − Hz |
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