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ES9027SPRO Datasheet(PDF) 18 Page - ESS Technology,Inc |
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ES9027SPRO Datasheet(HTML) 18 Page - ESS Technology,Inc |
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18 / 89 page ![]() ES9027PRO Datasheet VERSION 0.4.1 ESS TECHNOLOGY, INC. 109 Bonaventura Drive, San Jose, CA 95134, USA Tel (408) 643-8800 • WWW.ESSTECH.COM 18 Pre-Programmed Digital Filters The ES9027PRO has 7 pre-programmed digital filters. The latency for each filter reduces (scales) with increasing sample rates. (See Register 88[2:0] for configuration). The 7 filters are: • Minimum Phase (default) • Linear Phase Apodizing • Linear Phase Fast Roll-off • Linear Phase Slow Roll-off • Minimum Phase Fast Roll-off • Minimum Phase Slow Roll-off • Minimum Phase Slow Roll-off Low Dispersion PCM Filter Properties (48kHz Sampling) Minimum Phase Parameter Conditions MIN TYP MAX UNIT Pass band –3dB 0.49 x fs Hz Stop band -97dB 0.55 x fs Hz Group Delay 3.29/fs 9.37/fs s Flatness (ripple) 0.0004 dB Linear Phase Apodizing Parameter Conditions MIN TYP MAX UNIT Pass band –3dB 0.44 x fs Hz Stop band -107dB 0.5 x fs Hz Group Delay 33.2/fs s Flatness (ripple) 0.0017 dB Linear Phase Fast Roll-off Parameter Conditions MIN TYP MAX UNIT Pass band –3dB 0.49 x fs Hz Stop band -118dB 0.55 x fs Hz Group Delay 33.8/fs s Flatness (ripple) 0.0023 dB Linear Phase Slow Roll-off Parameter Conditions MIN TYP MAX UNIT Pass band –3dB 0.44 x fs Hz Stop band -84dB 0.74 x fs Hz Group Delay 5.62/fs s Flatness (ripple) 0.002 dB |
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