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TDA9873HS データシート(PDF) 3 Page - NXP Semiconductors |
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3 / 40 page 2000 Apr 04 3 Philips Semiconductors Product specification Multistandard dual carrier stereo sound decoder TDA9873H QUICK REFERENCE DATA VCC =5V; Tamb =25 °C; B/G standard (fSC1 = 5.5 MHz, fSC2 = 5.742 MHz, SC1/SC2=7dB, ∆fAF = 27 kHz, fmod = 1 kHz, L = R, stereo mode); input level for first sound carrier Vi(FM)(rms) =50mV; fref = 4.000 MHz; measured in application circuits of Figs 7 and 8; unless otherwise specified. Notes 1. Condition for B/G, I and D/K standard: VCC = 5 V and ∆f = 27 kHz (m = 54%). Condition for M standard: VCC =5V and ∆f = 13.5 kHz; 6 dB gain added internally to compensate smaller deviation. 2. The maximum total system identification time ‘on’ for a channel change is equal to maximum value of tident(on) plus tI2C(read-out). The maximum total system identification time ‘off’ for a channel change is equal to maximum value of tident(off) plus tI2C(read-out). The fast mode is proposed mainly during search tuning, program or channel select. If the channel is selected, the identification response should be switched to normal mode for improved reliability. However due to the transition from fast to normal mode, the identification bits are not valid for one integrator period. Therefore the transmitter mode detected during the fast mode has to be stored before changing to normal mode. The storage has to be kept for two seconds (maximum value of tident(on) in the normal mode) from the moment of transition. The identification can now operate in the normal mode until the next tuning action. 3. R modulated and L monitored. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VCC supply voltage 4.5 5 6.6 V ICC supply current 40 60 75 mA Vo(rms) AF output level (RMS value) 54% modulation; note 1 400 500 600 mV Vo(cl)(rms) AF output clipping level (RMS value) THD < 1.5% 1400 −− mV fi(FM) FM-PLL operating frequencies (switchable) first sound carrier M standard − 4.5 − MHz B/G standard − 5.5 − MHz I standard − 6.0 − MHz D/K standard − 6.5 − MHz second sound carrier M standard − 4.72 − MHz B/G standard − 5.74 − MHz D/K (1) standard − 6.26 − MHz D/K (2) standard − 6.74 − MHz D/K (3) standard − 5.74 − MHz S/NW weighted signal-to-noise ratio (complete signal path) CCIR 468-4 weighted; quasi peak; dual mode; B/G standard; note 1 52 56 − dB tident(on) total identification time on for identification mode change normal mode; note 2 0.35 − 2s fast mode; note 2 0.1 − 0.5 s Vi(FM)(rms) FM-PLL input voltage (RMS value) sensitivity for pull-in first sound carrier −− 6mV second sound carrier −− 1mV α cs(AF)(stereo) AF channel separation (stereo mode; complete signal path) B/G standard; note 3 without alignment 25 30 − dB I2C-bus alignment 40 45 − dB αct(AF)(dual) AF crosstalk attenuation (dual mode; complete signal path) 65 70 − dB |
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