【应用】国产音频功放SGM4996用于扫地机器人,功耗低至0.01μA,PSRR范围为-54~-85dB
家用扫地机机器人可以解放人们双手,为家庭清洁带来便利。客户在设计一款扫地机时,需要一颗语音功放芯片来驱动扬声器,需要低功耗,支持差分输入,功率1W。根据需求,笔者推荐国产圣邦微(SGMICRO)推出的的语音功放芯片SGM4996,满足客户需求。SGM4996是一款全差分音频功率放大器,可在2.5V至5.5V电源范围内工作。它可以在5V供电时将1.3W的功率转换为8Ω负载。
下图是应用框图:
选择SGM4996的理由:
1、具有低功耗关闭模式,功耗低至0.01μA,非常适合锂电供电产品。
2、具有具有弹出/点击抑制电路、内部热关机保护机制,保护芯片正常工作。
3、提供绿色MSOP-10、TDFN-3×3-10L和MSOP-8封装,提供多种封装选择。
4、高PSRR,PSRR值范围从-54~-85dB,受电源影响小。
综上,SGM4996具有低THD+N、高PSRR、低关断电流等优异性能,非常适合应用在扫地机产品上,助力语音播放功能。
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现货市场
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提供语音芯片、MP3芯片、录音芯片、音频蓝牙芯片等IC定制,语音时长:40秒~3小时(外挂flash),可以外挂TF卡或U盘扩容。
最小起订量: 1pcs 提交需求>
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