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ROHM Semiconductor |
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.
FApplications
Headphone stereos
Portable CD players
FFeatures
1) Four sound quality settings are possible by DC con-
trol.
2) High-frequency sounds can be cut off based on the
volume.
3) The sound leak reduction circuit can be turned on
and off by DC control.
FBlock diagram
555
Audio ICs
FAbsolute maximum ratings (Ta = 25_C)
BA3840KV
FRecommended operating conditions (Ta = 25_C)
FElectrical characteristics(unless otherwise noted, Ta = 25_C, VCC = 2V, f = 1kHz, VIN = 100mVrms,
F flat position on, sound leak reduction circuit off)
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