Auto-Loudness Controller for Headphone Stereo Systems
The LA3550M Auto-Loudness Controller IC provides userselectable
boosting of up to approximately 24dB for lowfrequency
sound components in the range of 30 to 50Hz.
Boosting gain for low frequencies can be controlled in proportion
to the level of an external input signal. High frequencies
are also boosted by a fixed 6dB. The result gives
natural and dynamic boosting at all sound levels, and realistic
The LA3550M operates on a 1.5V power supply and boosts
a super bass adopting the external CR circuit. The boosting
feature can be selected “ON/OFF” by means of an electronic
switch on the chip.
• User-selectable low-frequency boost levels from 5.5 to
• 6dB (fixed) high-frequency boosting.
• Low-frequency boost gain level control circuit on-chip.
• Output signal detection circuit on-chip.
• Boost select/deselect switching.
• Built-in AGC circuit prevents clipping.
• Reduced noise levels.
• Reduced parts’ count.
• Low-power operation.
• 14-pin MFP package (1mm pitch pins).>
论坛暂无【LA3550M】相关信息... 或从这里》》 到论坛咨询或索取相关资料 或发布LA3550M信息...