晶振在智能手机中有什么作用？

时间： 2023-11-25 来源：应达利

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在刚刚过去的2023年第三季度，全球智能手机出货量2.946亿台，同比下降1%。在连续多个季度的环比下跌之后，受益于区域经济复苏及产品升级需求，智能手机终于在第三季度迎来了环比增长。IDC预测，2024年全球智能手机将恢复同比增长4.5%，未来5年复合增长率1.7%。智能手机主板数字电路中需要通过晶振与其它元件的配合使用下达命令，从而获得脉冲信号源得以工作。晶振是智能手机不可或缺的重要元器件。

晶振在智能手机中有什么作用？

晶振为智能手机芯片提供精准时钟信号，在手机基带无线通讯，手机GPS定位，蓝牙芯片等模块都需要晶振提供频率信号。
4G智能手机需要约5-6颗晶振，负责时间显示的为32.768KHz晶振，蓝牙模块上的16MHz、26MHz或32MHz贴片晶振，负责数据传输，13.560MHz贴片晶振负责NFC功能，以及高精度TCXO温补晶振26MHz，负责GPS定位。
5G智能手机大约要配置6-10颗晶振。

5G手机除具备4G手机常用功能之外，还需要实现数据传输的高速及高稳定需求，常见晶振频率为76.8MHz或者96MHz、负载电容为8-12pF，尺寸为2.0mm*1.6mm或1.6mm*1.2mm。

应达利的无源晶体 SMCE-3225封装26MHz（料号5YMA26000091SF30Q1），通过紫光展锐芯片IC：SC6531D认证，可完美应用于手机。5YMA26000091SF30Q1具有高精度、高稳定性的特点，安全性高；老化率±3ppm，使用寿命长；封装尺寸3.2mmX2.5mm，有利于节省空间。

5YMA26000091SF30Q1产品图

应达利晶振SMCE-3225系列的标称频率范围8MHz~156.25MHz，频偏低至10ppm，工作温度范围是-40℃~+125℃，储存温度范围是-55℃~+125℃。

规格图1

石英晶振能够提供稳定输出是一项十分重要的要求。SMCE-3225为表贴缝焊式陶瓷封装晶体谐振器，其尺寸小巧，符合RoHS标准且无铅，具备高可靠性、频率范围广的优质特性，还可广泛应用于安防行业、汽车电子、工业应用、通讯应用、消费电子、医疗应用等。

规格图2

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