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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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TDA7514 Arkusz danych(PDF) 17 Page - STMicroelectronics |
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TDA7514 Arkusz danych(HTML) 17 Page - STMicroelectronics |
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17 / 74 page  17/74 TDA7514 3.4 STEREODECODER Standard Conditions, unless otherwise indicated: FM: Input at #TUNER_IN = 1 kHz at 450 mVrms, Input Gain setting = 0.5 dB, Deemphasis = 75 µs, Roll Off Compensation set to give maximum stereo separation (note that this varies with VSBL setting) AM: Input at #TUNER_IN = 1 kHz at 1 Vrms, Input Gain setting = 0.5 dB Table 6. Symbol Parameter Test Condition Min. Typ. Max. Unit VIN MPX Input Level Input Gain = 3.5dB 0.5 1.25 VRMS Rin Input Resistance (TUNERIN) FM 70 100 130 k Ω AM 30 k Ω Gain Minimum Input Gain 0.5 dB Gmax Maximum Input Gain 5.75 dB GSTEP Step Resolution 1.75 dB a Max Channel Separation 30 50 dB SVRR Supply Voltage Ripple Rejection Vripple=100mV, f=1kHz 35 55 dB THD Total Harmonic Distortion fin=1kHz, mono 0.02 0.3 % S+N N Signal plus Noise to Noise Ratio A-weighted, S=2Vrms 80 91 dB MONO/STEREO SWITCH (With InGain=5.75dB) VPTHST1 Pilot Threshold Voltage for Stereo, PTH=1 10 15 25 mV VPTHST0 Pilot Threshold Voltage for Stereo, PTH=0 15 25 35 mV VPTHMO1 Pilot Threshold Voltage for Mono, PTH=1 7 12 17 mV VPTHMO0 Pilot Threshold Voltage for Mono, PTH=0 10 19 25 mV PLL ∆f/f Capture Range 0.5 % DEEMPHASIS & HIGHCUT τDeempFM Deemphasis Time Constants FM; VLEVEL >> VHCH Deemphasis=50 µs, FM 25 50 75 µs Deemphasis=75 µs, FM 50 75 100 µs τDeempAM Deemphasis Time Constants AM; VLEVEL >> VHCH Deemphasis=50 µs, AM 22.3 kHz Deemphasis=75 µs, AM 14.9 kHz REF5V Internal Reference Voltage 4.7 5 5.3 V Carrier and Harmonic suppresion at output α19 Pilot Signal f=19kHz, Deemphasis=75 µs40 50 dB α38 Subcarrier f=38kHz, Deemphasis=75 µs75 dB α57 Subcarrier f=57kHz, Deemphasis=75 µs62 dB α76 Subcarrier f=76kHz, Deemphasis=75 µs90 dB Intermodulation α2 fmod=10kHz, fspur=1kHz 65 dB α3 fmod=13kHz, fspur=1kHz 75 dB Traffic Radio α57 Signal f = 57kHz 70 dB SCA – Subsidiary Communication Authorization α67 Signal f = 67kHz 75 dB ACI – Adjacent Channel Interference α114 Signal f = 114kHz 95 dB α190 Signal f = 190kHz 84 dB |
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