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LA4820M - Monaural Speaker/Stereo Headphone Power Amplifier

Description

Pin No.

1 Pin name R.F REF (Ripple Filter) Pin voltage [V] 5.5 Internal equivalent circuit Remarks c LPF pin for ripple filter reference bias.

c Ripple rejection ratio can be adjusted through an external capacitor.

Features

  • c Power-saving headphone jack plug-in/out detection function on chip that electronically switches between the stereo headphone amplifier and the monaural BTL amplifier according to jack plug-in/out. c The monaural amplifier has, as output control functions, a built-in output limiter that permits adjustment in accordance with the speaker impedance and a non-clipping circuit that outputs a sine wave suited to the output D range, while the headphone amplifier has a built-in user-friendly PVSS (Peak.

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The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Ordering number: EN5205A Monolithic Linear IC LA4820M Monaural Speaker/Stereo Headphone Power Amplifier Overview The LA4820M compound power IC is designed for portable information processing equipment, such as electronic book players and personal notebook computers, and provides on chip headphone stereo amplifier and monaural speaker amplifier functions required of such devices. This system IC also provides on chip a power-saving headphone jack plug-in/out detection function, which automatically switches the amplifiers, and an optimum volume level controller.
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