450

Audio ICs

Headphone driver for digital audio

BA3578FS / BA3579FS

The BA3578FS and BA3579FS are headphone drivers with internal an LPF and fixed bass boost circuit for multi-bit D / A

converters.

FApplications

Portable CD players

FFeatures

1) Suitable for use in digital audio equipment (line-out

output noise voltage: 18

µVrms, S / N = 95dB Typ.).

2) Internal LPF for multi-bit D / A converters

(fc = 34kHz,

*12dB / oct. Typ.).

3) Headphone mute function.

4) Internal BB (bass boost) circuit.

5) Internal supply current for line-mute transistor.

6) No need for output oscillation preventive measures.

7) Internal standby switch.

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions

FRecommended operating range