ROHM BA3840KV Datasheet
Audio ICs
Preset graphic equalizer for
headphone stereos
BA3840KV
The BA3840KV is a preset graphic equalizer IC for headphone stereos. It combines two equalizer circuit channels on
a single chip, and also includes a dynamic sound leak reduction circuit.
Applications
Headphone stereos
Portable CD players
Features
1) Four sound quality settings are possible by DC control.
2) High-frequency sounds can be cut off based on the
volume.
Block diagram
3) The sound leak reduction circuit can be turned on
and off by DC control.
555
Audio ICs BA3840KV
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
FElectrical characteristics(unless otherwise noted, Ta = 25_C, V
F flat position on, sound leak reduction circuit off)
CC = 2V, f = 1kHz, VIN = 100mVrms,
556
Audio ICs BA3840KV
Pin descriptions
557
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