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STA529 датащи(PDF) 26 Page - STMicroelectronics |
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STA529 датащи(HTML) 26 Page - STMicroelectronics |
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26 / 57 page ![]() ADC STA529 26/57 Doc ID 13095 Rev 3 7.2.1 Digital filter characteristics 7.2.2 High-pass filter characteristics 7.2.3 Programmable gain amplifier (PGA) The PGA is available in mic-in mode only. The input signal can be amplified from 0 to 42 dB in 6-dB steps via bits PGA of register ADCCFG on page 49. Table 17. Digital filter characteristics Parameter Typical Unit Pass band 0.4535 * fs kHz Pass-band ripple: Fs mode Fs_by_2 mode Fs_by_4 mode 0.08 at 44.1 kHz 0.08 at 22.05 kHz 0.08 at 11.025 kHz dB dB dB Stop-band attenuation: Fs mode Fs_by_2 mode Fs_by_4 mode 45 at 44.1 kHz 45 at 22.05 kHz 45 at 11.025 kHz dB dB dB Group delay: Fs mode Fs_by_2 mode Fs_by_4 mode 0.4 at 32 kHz 0.7 at 16 kHz 1.4 at 8 kHz ms ms ms Table 18. High-pass filter characteristics Parameter Typical Unit Frequency response: -3 dB -0.08 dB 7 50 Hz Hz Phase deviation at 20 Hz 19.35 degree Passband ripple 0.08 dB |
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