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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8983GEFL/V датащи(PDF) 12 Page - Wolfson Microelectronics plc |
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WM8983GEFL/V датащи(HTML) 12 Page - Wolfson Microelectronics plc |
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12 / 124 page  WM8983 Production Data w PD, Rev 4.3, May 2010 12 Test Conditions DCVDD=1.8V, AVDD1=AVDD2=DBVDD=3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT AVDD1=AVDD2=2.5V Channel Separation 6 100 dB LIN and RIN into input PGA Bypass to LOUT1 and ROUT1 into 10k Ω / 50pF loads BYPLMIXVOL, BYPRMIXVOL, LOUT1VOL and ROUT1VOL = 0dB Full-scale output voltage, 0dB gain AVDD1/3.3 Vrms SIGNAL TO NOISE RATIO 3 SNR A-weighted AVDD1=AVDD2=3.3V 90 100 dB A-weighted AVDD1=AVDD2=2.5V 96 dB 22Hz to 22kHz AVDD1=AVDD2=3.3V 95.5 dB 22Hz to 22kHz AVDD1=AVDD2=2.5V 93.5 dB Total Harmonic Distortion 4 THD full-scale signal AVDD1=AVDD2=3.3V -87 -75 dBFS full-scale signal AVDD1=AVDD2=2.5V -69 dBFS Total Harmonic Distortion + Noise 5 THD+N full-scale signal AVDD1=AVDD2=3.3V -85 -73 dBFS full-scale signal AVDD1=AVDD2=2.5V -68 dBFS Channel separation 6 1kHz full scale signal 100 dB Speaker Output (LOUT2, ROUT2 with 8 Ω bridge tied load, INVROUT2=1) Full scale output voltage, 0dB gain. 7 SPKBOOST=0 AVDD2/ 3.3 Vrms SPKBOOST=1 (AVDD2/ 3.3)*1.5 Output Power PO Output power is very closely correlated with THD; see below Total Harmonic Distortion THD PO =200mW, RL = 8 Ω, AVDD2=3.3V 0.04 -68 % dB PO =320mW, RL = 8 Ω, AVDD2=3.3V 1.0 -40 % dB PO =500mW, RL = 8 Ω, AVDD2=5V 0.02 -74 % dB PO =860mW, RL = 8 Ω, AVDD2=5V 1.0 -40 % dB Signal to Noise Ratio SNR AVDD2=3.3V, RL = 8 Ω 90 dB AVDD2=5V, RL = 8 Ω 90 dB Power Supply Rejection Ratio (50Hz-22kHz) PSRR RL = 8 Ω BTL 80 dB RL = 8 Ω BTL AVDD2=5V (boost) 69 dB Microphone Bias Bias Voltage MBVSEL=0 0.9*AVDD1 V MBVSEL=1 0.65*AVDD1 V Bias Current Source for VMICBIAS within +/-3% 3 mA Output Noise Voltage 1kHz to 20kHz 15 nV/ √Hz |
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