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1:提供稳定的电源
2:实现数字和模拟的隔离
3:如果使用环境的温度要求比较高,可以使用外部参考源,同时可以实现手动校准
4:对输入信号进行处理,包括滤波整形,添加buffer等。
具体的各种方式,可以参考Hardware Design Guidelines for TMS320F28xx and TMS320F28xxx DSCs.PDF。