MAX98357A datasheet(3/38 Pages) MAXIM

Part #	MAX98357A

Description	PCM Input Class D Audio Power Amplifiers

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Manufacturer	MAXIM [Maxim Integrated Products]

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MAX98357A/MAX98357B

PCM Input Class D Audio Power Amplifiers

3

Maxim Integrated

LIST OF FIGURES

LIST OF TABLES

Figure 1. I2S 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 I2S Digital Audio Interface Timing, 16-Bit Resolution . ... ... .. ... .. ... ... .. ... .. ... . 22

Figure 7. MAX98357A I2S 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. SD_MODE Control .. .. ... ... .. ... ... .. ... .. ... .. ... ... .. ... ... .. ... .. ... ... ... .. ... .. ... 19

Table 6. Examples of SD_MODE Pullup Resistor Values ... ... .. ... .. ... .. ... .. ... ... .. ... ... .. ... ... .. 19

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

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

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