Cirrus Logic CDB4349 - Manual (Page 2)

2 DS782DB1
CDB4349
TABLE OF CONTENTS
1. CDB4349 SYSTEM OVERVIEW ............................................................................................................ 4
2. CS4349 DIGITAL-TO-ANALOG CONVERTER ..................................................................................... 4
3. CS8416 DIGITAL AUDIO RECEIVER .................................................................................................... 4
4. INPUT FOR CLOCKS AND DATA ......................................................................................................... 4
5. INPUT FOR CONTROL DATA ............................................................................................................... 4
6. POWER SUPPLY CIRCUITRY ............................................................................................................... 5
7. GROUNDING AND POWER SUPPLY DECOUPLING .......................................................................... 5
8. ANALOG OUTPUT FILTERING ............................................................................................................. 5
9. BOARD CONNECTIONS AND SETTINGS ............................................................................................ 6
10. PERFORMANCE PLOTS ..................................................................................................................... 7
11. SCHEMATICS .................................................................................................................................... 13
12. LAYOUT ............................................................................................................................................. 20
13. REVISION HISTORY .......................................................................................................................... 23
LIST OF FIGURES
Figure 1. FFT 0 dBFS, FS = 48 kHz ........................................................................................................... 7
Figure 2. FFT -60 dBFS, FS = 48 kHz ........................................................................................................ 7
Figure 3. FFT No Input, FS = 48 kHz .......................................................................................................... 7
Figure 4. FFT No Input Out of Band, FS = 48 kHz ...................................................................................... 7
Figure 5. Frequency Response 0 dBFS, FS = 48 kHz ................................................................................ 7
Figure 6. THD+N vs Frequency 0 dBFS, FS = 48 kHz ............................................................................... 7
Figure 7. THD+N vs Level 1 kHz, FS = 48 kHz ........................................................................................... 8
Figure 8. Fade-to-Noise Linearity 1 kHz, FS = 48 kHz ............................................................................... 8
Figure 9. Impulse Response, FS = 48 kHz ................................................................................................. 8
Figure 10. FFT Crosstalk Ch. A to Ch. B 1 kHz, FS = 48 kHz .................................................................... 8
Figure 11. FFT Crosstalk Ch. B to Ch. A 1 kHz, FS = 48 kHz .................................................................... 8
Figure 12. FFT 0 dBFS, FS = 96 kHz ......................................................................................................... 8
Figure 13. FFT -60 dBFS, FS = 96 kHz ...................................................................................................... 9
Figure 14. FFT No Input, FS = 96 kHz ........................................................................................................ 9
Figure 15. FFT No Input Out of Band, FS = 96 kHz .................................................................................... 9
Figure 16. Frequency Response 0 dBFS, FS = 96 kHz .............................................................................. 9
Figure 17. THD+N vs Frequency 0 dBFS, FS = 96 kHz ............................................................................. 9
Figure 18. THD+N vs Level 1 kHz, FS = 96 kHz ......................................................................................... 9
Figure 19. Fade-to-Noise Linearity 1 kHz, FS = 96 kHz ........................................................................... 10
Figure 20. Impulse Response, FS = 96 kHz ............................................................................................. 10
Figure 21. FFT Crosstalk Ch. A to Ch. B 1 kHz, FS = 96 kHz .................................................................. 10
Figure 22. FFT Crosstalk Ch. B to Ch. A 1 kHz, FS = 96 kHz .................................................................. 10
Figure 23. FFT 0 dBFS, FS = 192 kHz ..................................................................................................... 10
Figure 24. FFT -60 dBFS, FS = 192 kHz .................................................................................................. 10
Figure 25. FFT No Input, FS = 192 kHz .................................................................................................... 11
Figure 26. FFT No Input Out of Band, FS = 192 kHz ................................................................................ 11
Figure 27. Frequency Response 0 dBFS, FS = 192 kHz .......................................................................... 11
Figure 28. THD+N vs Frequency 0 dBFS, FS = 192 kHz ......................................................................... 11
Figure 29. THD+N vs Level 1 kHz, FS = 192 kHz ..................................................................................... 11
Figure 30. Fade-to-Noise Linearity 1 kHz, FS = 192 kHz ......................................................................... 11
Figure 31. Impulse Response, FS = 192 kHz ........................................................................................... 12
Figure 32. FFT Crosstalk Ch. A to Ch. B 1 kHz, FS = 192 kHz ................................................................ 12
Figure 33. FFT Crosstalk Ch. B to Ch. A 1 kHz, FS = 192 kHz ................................................................ 12
Figure 34. System Block Diagram and Signal Flow .................................................................................. 13
Figure 35. CS4349 .................................................................................................................................... 14
Figure 36. Analog Outputs ........................................................................................................................ 15
Figure 37. PCM Input Header and Hardware Control ............................................................................... 16