DS786A1

17

CS4412A

C2 is the DC-blocking capacitor. Table 5 shows the component values for C2 based on corner frequency

(-3 dB point) and a nominal speaker (load) impedances of 4

Ω, 6 Ω, and 8 Ω. This capacitor should also

be chosen to have a ripple current rating above the amount of current that will passed through it.

Load

Corner Frequency

C2

4

Ω

40 Hz

1000 µF

58 Hz

680 µF

120 Hz

330 µF

6

Ω

39 Hz

680 µF

68 Hz

390 µF

120 Hz

220 µF

8

Ω

42 Hz

470 µF

60 Hz

330 µF

110 Hz

180 µF

Table 5. DC-Blocking Capacitors Values - Half-Bridge