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WM8750LSEFL Datasheet(PDF) 7 Page - Wolfson Microelectronics plc |
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WM8750LSEFL Datasheet(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 62 page  Production Data WM8750L w PD Rev 4.2 August 2005 7 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 AVDD = 3.3V 1.0 Full Scale Input Signal Level (for ADC 0dB Input at 0dB Gain) VINFS AVDD = 1.8V 0.545 V rms L/RINPUT1 to ADC, PGA gain = 0dB 22 L/RINPUT1 to ADC, PGA gain = +30dB 1.5 L/RINPUT1 unused DC Measurement 16 Input Resistance L/RINPUT1 unused 17 k Ω Input Capacitance 10 pF AVDD = 3.3V 80 95 Signal to Noise Ratio (A-weighted) SNR AVDD = 1.8V 90 dB Dynamic Range -60dBFs 90 95 dB -1dBFs input, AVDD = 3.3V -82 0.008 Total Harmonic Distortion THD -1dBFs input, AVDD = 1.8V -74 0.02 dB % 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 1kHz, full scale signal 90 Mute attenuation MONOOUT pin 81 dB Channel Separation analogue in to analogue out 85 dB DAC to Line-Out (L/ROUT2 with 10k Ω Ω Ω Ω / 50pF load) AVDD=3.3V 90 98 Signal to Noise Ratio (A-weighted) SNR AVDD=1.8V 93 dB AVDD=3.3V -84 Total Harmonic Distortion THD AVDD=1.8V -80 dB 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. HPVDD=1.8V, RL=32 Ω PO=5mW 0.016 -76 HPVDD=1.8V, RL=16 Ω PO=5mW 0.022 -73 HPVDD=3.3V, RL=32 Ω, PO=20mW 0.013 -78 Total Harmonic Distortion THD HPVDD=3.3V, RL=16 Ω, PO=20mW 0.018 -75 % dB HPVDD = 3.3V 92 96 Signal to Noise Ratio (A-weighted) SNR HPVDD = 1.8V 96 dB |
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