Datasheet

MAX98357A/MAX98357B

PCM Input Class D Audio Power Amplifiers

3Maxim Integrated

LIST OF FIGURES

LIST OF TABLES

Figure 1. I

S Audio Interface Timing Diagram (MAX98357A) ............................................ 8

Figure 2. Left-Justified Audio Interface Timing Diagram (MAX98357B) .................................... 8

Figure 3. TDM Audio Interface Timing Diagram....................................................... 8

Figure 4. SD_MODE Resistor Connected Using Open Drain Driver ...................................... 20

Figure 5. SD_MODE Resistor Connected Using Push-Pull Driver........................................20

Figure 6. MAX98357A I

S Digital Audio Interface Timing, 16-Bit Resolution ............................... 22

Figure 7. MAX98357A I

S Digital Audio Interface Timing, 32-Bit Resolution................................ 23

Figure 8. MAX98357B Left-Justified Digital Audio Interface Timing, 16-Bit Resolution ....................... 24

Figure 9. MAX98357B Left-Justified Digital Audio Interface Timing, 32-Bit Resolution ....................... 25

Figure 10. MAX98357A TDM 16-Bit DAI Timing ..................................................... 26

Figure 11. MAX98357A TDM 32-Bit DAI Timing...................................................... 27

Figure 12. MAX98357B TDM 16-Bit DAI Timing ..................................................... 28

Figure 13. MAX98357B TDM 32-Bit DAI Timing .....................................................29

Figure 14. EMI with 12in of Speaker Cable and No Output Filtering ...................................... 30

Figure 15. Left-Channel PCM Operation with 6dB Gain ............................................... 31

Figure 16. Left-Channel PCM Operation with 12dB Gain .............................................. 31

Figure 17. Right-Channel PCM Operation with 6dB Gain .............................................. 32

Figure 18. (Left/2 + Right/2) PCM Operation with 6dB Gain ............................................ 32

Figure 19. Stereo PCM Operation Using Two ICs ....................................................33

Figure 20. Channel TDM Operation (Gain Fixed at 12dB) .............................................. 34

Figure 21. MAX98357A/MAX98357B WLP Ball Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 1. RMS Jitter Tolerance.................................................................... 18

Table 2. BCLK Polarity ......................................................................... 18

Table 3. LRCLK Polarity ........................................................................ 18

Table 4. Digital Filter Settings.................................................................... 19

Table 5. S D_M O D E Control ...................................................................... 19

Table 6. Examples of S D_M O D E Pullup Resistor Values ............................................... 19

Table 7. TDM Mode Channel Selection ............................................................ 21

Table 8. Gain Selection ........................................................................30