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AK4122 Datasheet(PDF) 8 Page - Asahi Kasei Microsystems |
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AK4122 Datasheet(HTML) 8 Page - Asahi Kasei Microsystems |
8 / 53 page ASAHI KASEI [AK4122] MS0267-E-02 2004/07 - 8 - SRC CHARACTERISTICS (Ta=25 °C; AVDD=DVDD=3.3V; AVSS=BVSS=DVSS=0V; data = 24bit; measurement bandwidth = 20Hz ~ FSO/2; unless otherwise specified.) Parameter Symbol min typ max Units SRC Characteristics: Resolution (Note 4) 24 Bits Input Sample Rate FSI 8 96 kHz Output Sample Rate FSO 32 96 kHz THD+N (Input = 1kHz, 0dBFS, Note 5) FSO/FSI = 44.1kHz/48kHz FSO/FSI = 48kHz/44.1kHz FSO/FSI = 32kHz/48kHz FSO/FSI = 96kHz/32kHz Worst Case (FSO/FSI = 48kHz/8kHz) - - - - - −113 −113 −114 −111 - - - - - −103 dB dB dB dB dB Dynamic Range (Input = 1kHz, −60dBFS, Note 5) FSO/FSI = 44.1kHz/48kHz FSO/FSI = 48kHz/44.1kHz FSO/FSI = 32kHz/48kHz FSO/FSI = 96kHz/32kHz Worst Case (FSO/FSI = 32kHz/44.1kHz) Dynamic Range (Input = 1kHz, −60dBFS, A-weighted, Note 5) FSO/FSI = 44.1kHz/48kHz - - - - 112 - 114 115 115 116 - 117 - - - - - - dB dB dB dB dB dB Ratio between Input and Output Sample Rate (Note 6) FSO/FSI 0.33 6 - Note 4. Input data for SRC corresponds to 24bit data. When LSB 4bit data is input, the AK4122 calculates as “0” data because SRC is 20bit calculation. Therefore, SRC outputs “0” data. Note 5. Measured by ROHDE & SCHWARZ UPD04, Rejection Filter = wide, 8192point FFT. Note 6. The “0.33” is the ratio of FSO/FSI when FSI is 96kHz and FSO is 32kHz. The “6” is the ratio of FSO/FSI when FSI is 8kHz and FSO is 48kHz. S/PDIF RECEIVER CHARACTERISTICS (Ta=25 °C; AVDD, DVDD=3.0 ∼ 3.6V) Parameter Symbol min typ max Units Input Resistance Zin - 10 - k Ω Input Voltage VTH 200 mVpp Input Sample Frequency fs 32 - 96 kHz |
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