我找遍PDF也不知道MUX配置是要选择哪路信号。比如说3'b000是选通哪两路？？？
PGA280的MUX的问题
Fuyi Wang 提问时间: 2023-08-19 18:23:55 / 已解决
如需获得 2个回答
user151383853 回答时间: 2023-08-19 18:48:49 应该还没有看仔细吧
Gain is controlled by Register 0. This register can control the gain and address for an external MUX in one byte. Selectable gains (in V/V) are : 128, 64, 32, 16, 8, 4, 2, 1, ½, ¼, and ⅛. The gain is set to 1/8V/V after device reset or power-on.
Kailyn Chen 回答时间: 2023-08-19 19:19:13datasheet Figure44的图是PGA280的输入端内部开关的图，当PGA280上电reset后，默认的是A1,A2关闭，其他开关打开，所以输入信号选择的是INP1和INN1。
如果要使用channel 2，请参考应用手册的Page5的介绍：http://www.deyisupport.com/cfs-file.ashx/__key/communityserver-discussions-components-files/52/0511.sboa119.pdf
For using Channel 2, INP2 and INN2, send this instruction:L 66 18 H ; This command activates the BUF stage and connects INP2 and INN2 to the amplifier.