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OPA337: OPA377QDBVRQ1的供电问题

Part Number: OPA337
Other Parts Discussed in Thread: OPA377

可以双电源供电吗? 数据手册描述1、Single-Supply Operation
                                                      2、Supply Voltage: 2.2 V to 5.5 V

我可以改为 -1.8V 和 +1.8V供电吗?

  • 您好,

    也是可以的,但是请注意OPA377共模输入范围是-0.2V到 (V+) − 1.2V,如果 -1.8V 和 +1.8V供电的话,输入范围就是-2V 到 0.6V;

    数据手册之所以标注为单电源供电运放是因为在单电源供电时,其输入范围包括地(或者说 0V 电位)。