Stmicroelectronics S.r.l.

Stmicroelectronics (shenzhen) R&d Co. Ltd.

Shuming Tong

Davide Luigi Brambilla

Mei Yang

Francesco Stilgenbauer

QiYu Liu

In an embodiment, an amplifier circuit includes a second stage that includes a first switch circuit including first and second terminals, a plurality of resistive elements coupled between the first and second terminals of the first switch circuit, and a plurality of switches configured to control an equivalent resistance between the first and second terminals of the first switch circuit. During play mode, the second stage has a gain between the input of the second stage and the output of the second stage of a first value. During a transition from mute mode to play mode, the amplifier circuit is configured to progressively increase the gain of the second stage from a second value to the first value. During a transition from play mode to mute mode, the amplifier circuit is configured to progressively decrease the gain of the second stage from the first value to the second value.

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Shenzhen, China

Shuming Tong