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TDA7342 数据表(PDF) 5 Page - STMicroelectronics |
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TDA7342 数据表(HTML) 5 Page - STMicroelectronics |
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5 / 14 page ![]() ELECTRICAL CHARACTERISTICS (continued.) Symbol Parameter Test Condition Min. Typ. Max. Unit ZERO CROSSING MUTE VTH Zero Crossing Threshold (note 1) WIN = 11 20 mV WIN = 10 40 mV WIN = 01 80 mV WIN = 00 160 mV AMUTE Mute Attenuation 80 100 dB VDC DC Step 0dB to Mute 0 3 mV SOFT MUTE AMUTE Mute Attenuation 45 60 dB TDON ON Delay Time CCSM = 22nF; 0 to -20dB; I = IMAX 0.7 1 1.7 ms CCSM = 22nF; 0 to -20dB; I = IMIN 20 35 55 ms TDOFF OFF Current VCSM = 0V; I = IMAX 25 50 75 µA VCSM = 0V; I = IMIN 1 µA VTHSM Soft Mute Threshold 1.5 2.5 3.5 V RINT Pullup Resistor (pin 21) (note 2) 35 50 65 K Ω VSMH (pin 21) Level High 3.5 V VSML (pin 21) Level Low Soft Mute Active 1 V BASS CONTROL BBOOST Max Bass Boost 15 18 20 dB BCUT Max Bass Cut -8.5 -10 -11.5 dB Astep Step Resolution 1 2 3 dB Rg Internal Feedback Resistance 45 65 85 K Ω TREBLE CONTROL CRANGE Control Range ±13 ±14 ±15 dB Astep Step Resolution 1 2 3 dB SPEAKER ATTENUATORS CRANGE Control Range 35 37.5 40 dB Astep Step Resolution 0.5 1.25 2.00 dB AMUTE Output Mute Attenuation Data Word = XXX11111 80 100 dB EA Attenuation Set Error 1.25 dB VDC DC Steps Adjacent Attenuation Steps 0 3 mV AUDIO OUTPUT Vclip Clipping Level d = 0.3% 2.1 2.6 Vrms RL Output Load Resistance 2 K Ω RO Output Impedance 30 100 Ω VDC DC Voltage Level 3.5 3.8 4.1 V TDA7342 5/14 |
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