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AFE4400 AD值

Other Parts Discussed in Thread: AFE4400

hi,你好!

我用AFE4400 模拟前端 做一个心率计,发现读出六个寄存器里的值只有 高八位看起来有效,中八位和低八位 要么是0xFF,要么是0x00,  而且指压传感器后,数据变化都不大,请问这正常吗?下面 附一组数据(一秒钟采一次样),供参考:

0F FF FF    5D FF 00    0C FF FF     1A 00 00    0A 00 FF    51 FF FF
0F FF FF    5D 00 00    0C 00 FF     19 FF 00    0A FF FF    51 00 FF
0F 00 FF    5D FF 00    0C 00 FF     19 00 00    0A FF FF    51 00 FF
0F FF FF    5D FF 00    0C 00 FF     19 FF 00    0A 00 FF    50 00 FF
0F 00 FF    5C 00 00    0B 00 FF     19 FF 00    0A FF FF    50 FF FF
0E FF FF   5C 00 00     0B 00 FF     19 FF 00    0A 00 FF    50 FF FF
0E 00 FF   5C FF 00     0B 00 FF     19 FF 00     0A 00 FF    50 00 FF