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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8993 датащи(PDF) 18 Page - Wolfson Microelectronics plc |
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WM8993 датащи(HTML) 18 Page - Wolfson Microelectronics plc |
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18 / 229 page  WM8993 Production Data w PD, November 2010, Rev 4.0 18 Test Conditions DCVDD = 1.2V, AVDD2 = DBVDD = CPVDD = 1.8V, AVDD1 = 3.0V, SPKVDD = 5V, DGND=AGND=CPGND=SPKGND=0V, TA = +25 oC, 1kHz sinusoidal signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT E7 Minimum Headphone Resistance HPOUT1L or HPOUT1R Normal operation 15 Ω Device survival with load applied indefinitely 1 Ω E8 Headphone Capacitance HPOUT1L or HPOUT1R 2 nF E9 DAC to Earpiece Driver (RL=16 Ω BTL) SNR (A-weighted) 97 dB THD (PO=50mW) -69 dB THD+N (PO=50mW) -67 dB PSRR (all other supplies 217Hz) 100mVpk-pk -51 dB DC Offset at Load 5 mV E10 Earpiece Resistance 15 Ω E11 Earpiece Capacitance Direct connection 200 pF E12 DAC to Speaker Outputs (RL=8 Ω + 10μH BTL, Stereo Mode) SNR (A-weighted) Class D mode SPK Boost=+12dB SPKMIXL or SPKMIXR + DACL or DACR + SPKLVOL or SPKRVOL 0dB SPKOUTLBOOST or SPKOUTRBOOST RLOAD= 8ohm SPKOUTLP or SPKOUTRP SPKOUTLN or SPKOUTRN 84 94 dB THD (PO=0.5W) -63 -53 dB THD+N (PO=0.5W) -62 -52 dB THD (PO=1.0W) -67 dB THD+N (PO=1.0W) -66 dB PSRR (all supplies 217Hz) -43 dB Crosstalk (L/R) -80 dB SNR (A-weighted) Class AB mode SPK Boost=+12dB 97 dB THD (PO=0.5W) -68 dB THD+N (PO=0.5W) -65 dB THD (PO=1.0W) -70 dB THD+N (PO=1.0W) -68 dB PSRR (all supplies 217Hz) -43 dB Crosstalk (L/R) -80 dB DC Offset at Load Class AB mode SPK Boost=0dB 10 mV |
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