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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA7400 датащи(PDF) 4 Page - STMicroelectronics |
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TDA7400 датащи(HTML) 4 Page - STMicroelectronics |
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4 / 28 page  Input Multiplexer Quasi-differential CD and cassette stereo input AM mono input Phone differential input Multiplexer signal after In-Gain available at separate pins Volume control 1dB attenuator Max. gain 15dB Max. attenuation 79dB Bass Control 2nd order frequency response Center frequency programmable in 4(5) steps DC gain programmable ±15 x 1dB steps Treble Control 2nd order frequency response Center frequency programmable in 4 steps ±15 x 1dB steps Speaker Control 4 independent speaker controls in 1dB steps max gain 15dB max. attenuation 79dB Mute Functions Direct mute Digitally controlled softmute with 4 programmable mute time DESCRIPTION OF THE AUDIOPROCESSOR PART ELECTRICAL CHARACTERISTICS (VS = 9V; Tamb =25 °C; RL = 10KΩ; all gains = 0dB; f = 1KHz; unless otherwise specified). Symbol Parameter Test Condition Min. Typ. Max. Unit INPUT SELECTOR Rin Input Resistance all inputs except Phone 70 100 130 K Ω VCL Clipping Level 2.2 2.6 VRMS SIN Input Separation 80 100 dB GIN MIN Min. Input Gain -1 0 1 dB GIN MAX Max. Input Gain 13 15 17 dB GSTEP Step Resolution 0.5 1 1.5 dB VDC DC Steps Adjacent Gain Step -5 0.5 5 mV GMIN to GMAX -10 5 10 mV DIFFERENTIAL CD STEREO INPUT Rin Input Resistance Differential 70 100 130 K Ω Common Mode 70 100 130 K Ω CMRR Common Mode Rejection Ratio VCM =1VRMS @ 1KHz 45 70 dB VCM =1VRMS @ 10KHz 45 60 dB eN Output Noise @ Speaker Outputs 20Hz to 20KHz flat; all stages 0dB 615 µV DIFFERENTIAL PHONE INPUT Rin Input Resistance Differential 40 56 K Ω CMRR Common Mode Rejection Ratio VCM =1VRMS @ 1KHz 40 70 dB VCM =1VRMS @ 10KHz 40 60 dB TDA7400 4/28 |
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