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WM8903 Datasheet(PDF) 10 Page - Wolfson Microelectronics plc |
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WM8903 Datasheet(HTML) 10 Page - Wolfson Microelectronics plc |
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10 / 178 page  WM8903 Production Data w PD, Rev 4.5, June 2012 10 INPUT SIGNAL PATH Single-ended stereo line record - IN1L+IN1R pins to ADC output Test conditions: L_MODE = R_MODE = 00b (Single ended) LIN_VOL = RIN_VOL = 00000b (-1.55dB) Total signal path gain = 4.45dB, incorporating 6dB single-ended to differential conversion gain PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Full Scale Input Signal Level (for ADC 0dBFS). 0.570 -4.88 1.61 0.600 -4.45 1.70 0.630 -4.01 1.78 Vrms dBV Vpk-pk Input Resistance Rin 10 12 k Input Capacitance Cin 10 pF DC Offset At ADC output with ADC_HPF_ENA=0 11864 LSBs (24-bit) 47 LSBs (16-bit) Signal to Noise Ratio SNR A-weighted 85 91 dBFS Total Harmonic Distortion THD -5.45dBV input -78 -68 dBFS Total Harmonic Distortion + Noise THD+N -5.45dBV input -76 -66 dBFS Channel Separation 1kHz signal, -5.45dBV 85 dB 10kHz signal, -5.45dBV 80 Channel Level Matching 1kHz signal, -5.45dBV +/-1 dB Power Supply Rejection Ratio PSRR 1kHz, 100mVpk-pk 60 dB 20kHz, 100mV pk-pk 40 Differential stereo line record - IN2L+IN3L / IN2R+IN3R pins to ADC output Test conditions: L_MODE = R_MODE = 01b (Differential Line) LIN_VOL = RIN_VOL = 01111b (+4.2dB) Total signal path gain = +4.20dB PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Differential Line Input full scale signal level IN2L-IN3L or IN2R- IN3L (for ADC 0dBFS output) 0.586 -4.64 1.657 0.617 -4.20 1.745 0.648 -3.77 1.833 Vrms dBV Vpk-pk Input Resistance Rin 10 12 k Input Capacitance Cin 10 pF DC Offset At ADC output with ADC_HPF_ENA=0 11864 LSBs (24-bit) 47 LSBs (16-bit) Signal to Noise Ratio SNR A-weighted 85 92 dBFS Total Harmonic Distortion THD -5.2dBV input -80 -66 dBFS Total Harmonic Distortion + Noise THD+N -5.2dBV input -78 -64 dBFS Common Mode Rejection Ratio CMRR 1kHz, 100mV pk-pk 60 dB Channel Separation 1kHz signal, -5.2dBV 85 dB 10kHz signal, -5.2dBV 80 Channel Level Matching 1kHz signal, -5.2dBV +/-1 dB Power Supply Rejection Ratio PSRR 1kHz, 100mVpk-pk 60 dB 20kHz, 100mV pk-pk 40 |
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