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TDA7403 数据表(PDF) 9 Page - STMicroelectronics |
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TDA7403 数据表(HTML) 9 Page - STMicroelectronics |
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9 / 25 page  ELECTRICAL CHARACTERISTICS (VS = 9V; deemphasis time constant = 50 µs, VMPX = 500mV, 75KHz deviation, f = 1KHz. GI = 6dB, Tamb = 25°C; unless otherwise specified). Symbol Parameter Test Condition Min. Typ. Max. Unit VIN MPX Input Level Input Gain = 3.5dB 0.5 1.25 VRMS Rin Input Resistance 100 K Ω Gmin Minimum Input Gain 3.5 dB Gmax Max Input Gain 11 dB GSTEP Step Resolution 2.5 dB SVRR Supply Voltage Ripple Rejection Vripple = 100mv, f = 1khz 60 dB α Max Channel Separation 50 dB THD Total Harmonic Distortion 0.05 % S + N N Signal plus Noise to Noise Ratio S = 2Vrms 86 dB MONO/STEREO SWITCH VPTHST1 Pilot Threshold Voltage for Stereo, PTH = 1 15 mV VPTHST0 Pilot Threshold Voltage for Stereo, PTH = 0 25 mV VPTHMO1 Pilot Threshold Voltage for Mono, PTH = 1 12 mV VPTHMO0 Pilot Threshold Voltage for Stereo, PTH = 0 19 mV PLL ∆f/f Capture Range 0.5 % DEEMPHASIS and HIGHCUT τHC50 Deemphasis Time Constant Bit = 7, Subadr. 10 = 0 VLEVEL >> VHCH 50 µs τHC75 Deemphasis Time Constant Bit = 7, Subadr. 10 = 1 VLEVEL >> VHCH 75 µs τHC50 Highcut Time Constant Bit = 7, Subadr. 10 = 0 VLEVEL >> VHCL 150 µs τHC75 Highcut Time Constant Bit = 7, Subadr. 10 = 1 VLEVEL >> VHCL 225 µs STEREOBLEND and HIGHCUT-CONTROL REF5V Internal Reference Voltage 5 V TCREF5V Temperature Coefficient 3300 ppm LGmin Min. LEVEL Gain 0 dB LGmax Max. LEVEL Gain 10 dB LGstep LEVEL Gain Step Resolution 0.67 dB VSBLmin Min.Voltage for Mono 33 %REF5V VSBLmax Max. Voltage for Mono 58 %REF5V VSBLstep Step Resolution 8.4 %REF5V STEREODECODER PART No external components necessary PLL with adjustment free fully integrated VCO Automatic pilot dependent MONO/STEREO switching Very high suppression of intermodulation and interference Programmable Roll-Off compensation Dedicated RDS Softmute Highcut and Stereoblend characterisctics pro- grammable in a wide range Internal Noiseblanker with threshold controls Multipath detector with programmable inter- nal/external influence I 2C bus control of all necessary functions TDA7403 9/25 |
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