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CDB4222 데이터시트(PDF) 7 Page - Cirrus Logic |
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CDB4222 데이터시트(HTML) 7 Page - Cirrus Logic |
7 / 29 page CS4222 DS236F1 7 ANALOG INPUT CHARACTERISTICS (Test conditions (unless otherwise specified): Input test signal is a 997 Hz sine wave; measurement bandwidth is 10 Hz to 20 kHz; VD = VA, Fs=48kHz) Notes: 2. Referenced to typical fullscale differential input voltage. 3. The filter characteristics have been normalized to the sample rate (Fs) and can be referenced to the desired sample rate by multiplying the given characteristic by Fs. 4. The analog modulator samples the input at 6.144 MHz for an Fs equal to 48 kHz. There is no rejection of input signals which are multiples of the sampling frequency (n x 6.144 MHz +/- 21.8 kHz; n = 0, 1, ...). Parameter CS4222-KS CS4222-BS/-DS Min Typ Max Min Typ Max Unit Dynamic Range A-weighted unweighted 95 92 99 96 - - 95 92 99 96 - - dB dB Total Harmonic Distortion + Noise (Note 2) -1 dB -20 dB -60 dB - - - -90 -76 -36 -86 - - - - - -90 -76 -36 -86 - - dB dB dB Interchannel Isolation (1 kHz) - 90 - - 90 - dB DC Accuracy Offset Error (HPF Enabled) (HPF Disabled) - - 0 20 - - - - 0 20 - - mVRMS mVRMS Interchannel Gain Mismatch - 0.1 - - 0.1 - dB Gain Drift - ±100 - - ±100 - ppm/°C Analog Input Full Scale Differential Input Voltage 1.82 2.0 2.18 1.82 2.0 2.18 VRMS Input Resistance - 10 - - 10 - k Ω Input Capacitance - 15 - - 15 - pF Common Mode Input Voltage - 2.3 - - 2.3 - V ADC Digital Decimation Filter Characteristics (Note 3) Parameter Min Typ Max Unit Passband to -0.01 dB corner 0 - 0.4535 Fs Passband Ripple -0.01 - +0.01 dB StopBand 0.625 - - Fs StopBand Attenuation (Note 4) 80 - - dB Group Delay - 15/Fs - s Group Delay Variation - - 0 s HPF Characteristics Frequency Response -3 dB -0.1 dB - - 3.7 20 - - Hz Hz Phase Deviation @ 20 Hz - 10 - Degree Passband Ripple - - 0 dB |
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