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TDA7540N 数据表(PDF) 21 Page - STMicroelectronics |
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TDA7540N 数据表(HTML) 21 Page - STMicroelectronics |
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21 / 76 page ![]() TDA7540N Electrical specifications 21/76 VSBLmin Min. voltage for mono SBC 29 33 %VREF1 VSBLmax Max. voltage for mono SBC 54 58 %VREF1 VSBLstep Step resolution SBC 4.2 %VREF1 VHCHmin Min. voltage for no highcut VHCH 42 46 %VREF1 VHCHmax Max. Voltage for no highcut VHCH 61 66 %VREF1 VHCHstep Step resolution VHCH 8 %VREF1 VHCLmin Min. voltage for full high cut VHCL, MAXHC = 11 11 15 %VHCH VHCLmax Max. voltage for full high cut VHCL, MAXHC = 11 31 33 %VHCH VHCLstep Step resolution VHCL, MAXHC = 11 7.3 %VHCH Carrier and harmonic suppression at the output a19 Pilot signal f=19kHz Vpilot = 50mVrms 50 dB a38 Subcarrier f=38kHz 75 dB a57 Subcarrier f=57kHz 62 dB a76 Subcarrier f=76kHz 90 dB Intermodulation(1) a2 fmod=10kHz, fspur=1kHz 65 dB a3 fmod=13kHz, fspur=1kHz 75 dB Traffic radio(2) a57 Signal f=57kHz 70 dB SCA - Subsidiary communications authorization(3) a67 Signal f=67kHz 75 dB ACI - adjacent channel interference(4) a114 Signal f=114kHz 95 dB a190 Signal f=190kHz 84 dB FM noise blanker VTRMIN Min. trigger threshold (5) VPEAK=0.8V, NBLTH 147 mV OP VTRMAX Max. trigger threshold (5) VPEAK=0.8V, NBLTH 280 mV OP VTRSTEP Trigger threshold step0) 19 mV OP V TRNOISE Min. noise controlled trigger threshold(5) VPEAK=1.5V, NBCTH 450 mV OP V TRNOISE Max. noise controlled trigger threshold(5) VPEAK=1.5V, NBCTH 1200 mV OP Table 8. Stereodecoder electrical characteristics (continued) (Tamb = 25°C, VCC1 = VCC2 = VCC3 = VCCST= VCCVCO = VCCMIX1 = VCCMIX2 = VCCIF1 = 8.5V, VMPX = 500mVrms mono, f = 1kHz, deemphasis = 50µs, fXtal = 10.25MHz, in application circuit, unless otherwise specified). Symbol Parameter Test conditions Min. Typ. Max. Unit |
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