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CS44800 Scheda tecnica(PDF) 11 Page - Cirrus Logic |
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CS44800 Scheda tecnica(HTML) 11 Page - Cirrus Logic |
11 / 80 page DS632F1 11 CS44800 PWM FILTER CHARACTERISTICS (Logic “0” = GND = 0 V; Logic “1” = VLS = VLC; VD = 2.5 V; DAI_MCLK = 12.288 MHz; XTAL = 24.576 MHz; PWM Switch Rate = 384 kHz; Fs = 32 kHz to 192 kHz; Measurement bandwidth is 10 Hz to 20 kHz unless otherwise specified.) 12. Filter response is not production tested but is characterized and guaranteed by design. 13. XTAL = 49.152 MHz; PWM Switch Rate = 768 kHz; Fs = 96 kHz to 192 kHz. 14. The equation for the group delay through the sample rate converter with OSRATE = 0b is (8.5 / Fsi) + (10 / Fso) ± (4.5 / Fsi). The equation for the group delay through the sample rate converter with OSRATE = 1b is (8.5 / Fsi) + (20 / Fso) ± (4.5 / Fsi). SWITCHING CHARACTERISTICS - XTI (VD = 2.5 V, VDP = VLC = VLS = 3.3 V, VDX = 2.5 V to 5.0 V; Inputs: Logic 0 = GND, Logic 1 = VDX) Parameter Unit Min Typ Max Digital Filter Response (Note 12) Passband OSRATE = 0b to -0.01 dB corner to -3 dB corner OSRATE = 1b (Note 13) to -0.01 dB corner to -3 dB corner 0 0 0 0 - - - - 1.6 24.0 3.3 44.5 kHz kHz kHz kHz Frequency Response OSRATE = 0b 10 Hz to 20 kHz OSRATE = 1b (Note 13) 10 Hz to 40 kHz -0.8 -1.2 - - +0.02 +0.02 dB dB Group Delay (Note 14) ms De-emphasis Error Fs = 32 kHz (Relative to 1 kHz) Fs = 44.1 kHz Fs = 48 kHz - - - - - - ±0.23 ±0.14 ±0.09 dB dB dB Parameter Symbol Min Typ Max Unit XTI period tclki 18.518 --- 40.69 ns XTI high time tclkih 8.34 --- 22.38 ns XTI low time tclkil 8.34 --- 22.38 ns XTI Duty Cycle 45 50 55 % External Crystal operating frequency 24.576 --- 54 MHz XTI t clkih t clkil t clki Figure 2. XTI Timings |
Codice articolo simile - CS44800_06 |
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Descrizione simile - CS44800_06 |
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