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WM8991 Datasheet(PDF) 15 Page - Wolfson Microelectronics plc |
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WM8991 Datasheet(HTML) 15 Page - Wolfson Microelectronics plc |
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15 / 174 page  Pre-Production WM8991 w PP, May 2008, Rev 3.1 15 Test Conditions DCVDD = 1.8V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, SPKVDD = 5V, TA = +25 oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ADC Input Path Performance SNR (A-weighted) 85 94 dB THD (-1dBFS input) -84 -75 dB THD+N (-1dBFS input) -82 -73 dB Crosstalk (L/R) -100 dB AVDD PSRR (217Hz) 45 dB DCVDD PSRR (217Hz) Line inputs to ADC via INMIXL and INMIXR, AVDD = 3.3V 80 dB SNR (A-weighted) 93 dB THD (-1dBFS input) -78 dB D1 THD+N (-1dBFS input) Line inputs to ADC via INMIXL and INMIXR, AVDD = 2.7V -76 dB SNR (A-weighted) 93 dB THD (-1dBFS input) -83 dB THD+N (-1dBFS input) -81 dB Crosstalk (L/R) Record path (DACs to ADCs via INMIXL and INMIXR), AVDD = 3.3V -95 dB SNR (A-weighted) 92 dB THD (-1dBFS input) -78 dB D2 THD+N (-1dBFS input) Record path (DACs to ADCs via INMIXL and INMIXR), AVDD = 2.7V -76 dB SNR (A-weighted) 85 94 dB THD (-1dBFS input) -84 -75 dB THD+N (-1dBFS input) -82 -73 dB Crosstalk (L/R) -100 dB AVDD PSRR (217Hz) Input PGAs to ADC via INMIXL or INMIXR, AVDD = 3.3V 45 dB SNR (A-weighted) 92 dB THD (-1dBFS input) -78 dB D3 THD+N (-1dBFS input) Input PGAs to ADC via INMIXL or INMIXR, AVDD = 2.7V -76 dB SNR (A-weighted) 85 94 dB THD (-1dBFS input) -82 -75 dB THD+N (-1dBFS input) -80 -73 dB Crosstalk (L/R) Input PGAs to ADC via DIFFINL or DIFFINR, AVDD = 3.3V -100 dB SNR (A-weighted) 92 dB THD (-1dBFS input) -73 dB D4 THD+N (-1dBFS input) Input PGAs to ADC via DIFFINL or DIFFINR, AVDD = 2.7V -71 dB SNR (A-weighted) 94 dB THD (-1dBFS input) -81 dB THD+N (-1dBFS input) RXP-RXN to one ADC via RXVOICE, AVDD = 3.3V -79 dB SNR (A-weighted) 92 dB THD (-1dBFS input) -78 dB D5 THD+N (-1dBFS input) RXP-RXN to one ADC via RXVOICE, AVDD = 2.7V -76 dB |
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