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WM8973CLGEFL/V 데이터시트(PDF) 8 Page - Wolfson Microelectronics plc |
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WM8973CLGEFL/V 데이터시트(HTML) 8 Page - Wolfson Microelectronics plc |
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8 / 63 page ![]() WM8973L Production Data w PD, Rev 4.5, December 2011 8 ELECTRICAL CHARACTERISTICS Test Conditions DCVDD = 1.5V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3) to ADC out Full Scale Input Signal Level (for ADC 0dB Input at 0dB Gain) VINFS AVDD = 3.3V 1.0 V rms AVDD = 1.8V 0.545 Input Resistance L/RINPUT1 to ADC, PGA gain = 0dB 22 k L/RINPUT1 to ADC, PGA gain = +30dB 1.5 L/RINPUT1 unused DC Measurement 16 L/RINPUT1 unused 17 Input Capacitance 10 pF Signal to Noise Ratio (A-weighted) SNR AVDD = 3.3V 80 95 dB AVDD = 1.8V 90 Dynamic Range -60dBFs 90 95 dB Total Harmonic Distortion THD -1dBFs input, AVDD = 3.3V -82 0.008 dB % -1dBFs input, AVDD = 1.8V -74 0.02 ADC Channel Separation 1kHz signal 85 dB Channel Matching 1kHz signal 0.2 dB Analogue Outputs (LOUT1/2, ROUT1/2, MONOOUT) 0dB Full scale output voltage AVDD/3.3 Vrms Mute attenuation 1kHz, full scale signal 90 dB MONOOUT pin 81 Channel Separation analogue in to analogue out 85 dB DAC to Line-Out (L/ROUT2 with 10k / 50pF load) Signal to Noise Ratio (A-weighted) SNR AVDD=3.3V 90 98 dB AVDD=1.8V 93 Total Harmonic Distortion THD AVDD=3.3V -84 dB AVDD=1.8V -80 Channel Separation 1kHz signal 100 dB Headphone Output (LOUT1/ROUT1, using capacitors) Output Power per channel PO Output power is very closely correlated with THD; see below. Total Harmonic Distortion THD HPVDD=1.8V, RL=32 PO=5mW 0.016 -76 % dB HPVDD=1.8V, RL=16 PO=5mW 0.022 -73 HPVDD=3.3V, RL=32, PO=20mW 0.013 -78 HPVDD=3.3V, RL=16, PO=20mW 0.018 -75 Signal to Noise Ratio (A-weighted) SNR HPVDD = 3.3V 92 96 dB HPVDD = 1.8V 96 |
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