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Stereo 3.7W Class D Amplifier

Block Diagram

GAIN

INR+ 7

INR-

PGND

1, 8

6

5

MAX98306

1ST INTEGRATOR

2ND INTEGRATOR

1ST INTEGRATOR

2ND INTEGRATOR

GAIN

CONTROL

SHDN 2

CLICK-AND-POP

SUPPRESSION

MODULATOR

(FIXED GAIN 2x)

GAIN SELECTION

GAIN SELECTION

INL+ 3

INL- 4

14

13

MODULATOR

(FIXED GAIN 2x)

UVLO/POWER

MANAGEMENT

PVDD

2.6V TO 5.5V

0.1µF

10µF

11, 12

OUTL+

OUTL-

PVDD

LOW-EMI

DRIVER

PVDD

PGND

LOW-EMI

DRIVER

PVDD

PGND

9

10

OUTR+

OUTR-

LOW-EMI

DRIVER

PVDD

PGND

LOW-EMI

DRIVER

PVDD

PGND

PVDD