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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8753LEB/V датащи(PDF) 7 Page - Wolfson Microelectronics plc |
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WM8753LEB/V датащи(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 87 page  WM8753L Advanced Information w AI Rev 3.1 June 2004 7 ELECTRICAL CHARACTERISTICS Test Conditions DCVDD = 1.5V, AVDD = HPVDD = DBVDD = SPKRVDD = PLLVDD = 3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Analogue Inputs (LINE1, LINE2, RXP, RXN) Full-scale Input Signal Level (0dB) – note this changes with AVDD VINFS 1.0 V rms Input Capacitance CLINE1/2, RXP/N 10 pF Microphone Preamp Inputs (MIC1, MIC1N, MIC2, MIC2N) Full-scale Input Signal Level (0dB) – note this changes with AVDD VINFS 177 -12 mV rms dBV Mic preamp gain range 12 30 dB Mic preamp equivalent input noise At 30dB gain TBD uV Input resistance RMIC1N, RMIC2N Gain set to 30dB 5 k Ω Input resistance RMIC1N, RMIC2N Gain set to 24dB 10 k Ω Input resistance RMIC1N, RMIC2N Gain set to 18dB 18 k Ω Input resistance RMIC1N, RMIC2N Gain set to 12dB 33 k Ω Input resistance RMIC1, RMIC2 163 k Ω Recommended decoupling cap CDECOUP 0.33 uF Input Capacitance CMICIN 10 pF Programmable Gain Amplifier (PGA) Programmable Gain -17.25 30 dB Programmable Gain Step Size Guaranteed Monotonic 0.75 dB Mute Attenuation TBD dB Automatic Level Control (ALC) Target Record Level -28.5 -6 dB Gain Hold Time (Note 1) tHOLD 0, 2.67, 5.33, 10.67, … , 43691 (time doubles with each step) ms Gain Ramp-Up (Decay) Time (Note2) tDCY 24, 48, 96, … , 2458 (time doubles with each step) ms Gain Ramp-Down (Attack) Time (Note 2) tATK MCLK = 12.288MHz (Note 3) 6, 12, 24, … , 6140 (time doubles with each step) ms LINE1/2 to Analogue to Digital Converter (ADC) Signal to Noise Ratio (Note 4, 5) A-weighted, 0dB gain 95 dB Total Harmonic Distortion (Note 6) full-scale, 0dB gain -82 dB Channel Separation (Note 7) 1kHz input signal 90 dB LINE1/2 to Voice Analogue to Digital Converter (ADC), fs = 8kHz Signal to Noise Ratio (Note 4, 5) A-weighted, 0dB gain 82 dB Total Harmonic Distortion (Note 6) full-scale, 0dB gain -74 dB Channel Separation (Note 7) 1kHz input signal 90 dB Digital to Analogue Converter (DAC) to Lineout (LOUT1/2, ROUT1/2, MONO1, MONO2,OUT3 with 10kΩ / 50pF load) Signal to Noise Ratio (A-weighted) SNR A-weighted TBD 98 dB Total Harmonic Distortion (Note 6) THD RL = 10 k Ω full-scale signal -84 dB |
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