BH3540AFS Datasheet, PDF (1/5 Pages) Rohm – Headphone amplifier with internal LPF and EVR for CD-ROM

Optical disc ICs
Headphone amplifier with
internal LPF and EVR for CD-ROM
BH3540AFS
The BH3540AFS is an H / P amplifier with internal secondary LPF and EVR circuits. When multibit output from a
D / A converter is input, the secondary LPF outputs an audio signal. Output level for headphones can be changed with
the EVR circuit. This IC also has independent internal mute circuits for the left and right channels.
FApplications
CD-ROM drives and other products (with line and headphone output pins) that process digital audio signals
FFeatures
1) Internal LPF, line amplifier and EVR.
2) Internal mute function.
3) Internal thermal shutdown circuit.
4) No attached oscillation prevention components are
needed, even at a load of 8Ω.
5) Mute function reduces the popping noises that can
occur when the power is turned on and off.
FBlock diagram
146