BH3540AFS 查看數據表（PDF） - ROHM Semiconductor

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BH3540AFS

Headphone amplifier with internal LPF and EVR for CD-ROM

ROHM Semiconductor 

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

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