在我们使用ADS1299开发板为单端输入模式时:
我们的跳线配置:JP25:3-4,5-6短接;JP6:1-2,JP7:1-2,JP8:1-2短接;36P引出电极连接脑部,35引出电极连接耳垂作为参考;我们测的波形非常有规律,并非脑波形;
请问:我们的连线是否有误,我们该怎么解决?
注:芯片型号ADS1299EEGFE-PDK
xiansheng zhang:
Mickey Li
Kailyn Chen:
单端输入的正确配置方法在EVM user's guide P17 有描述:www.ti.com.cn/…/slau443b.pdf
1. Set all jumpers to factory defaults as described in Section 2.5.
2. Remove jumpers from pin 5-36 of J6.
3. Short pin 5 and 6 of JP25. Set the SRB1 bit in the MISC1 register to route the SRB1 pin to the
negative input of the channels (refer to Section 8.3 for details). This will route BIAS_ELEC (mid supply)
to the negative inputs of the channels through the SRB1 pin.
4. Provide the single-ended inputs to pins 36, 32, 28, 24, 20, 16, 12, 8 of J6 for channels 1-8 respectively