您好，我们正试图用ADS1281开发一套数据采集系统，软硬件现在都已进入测试阶段。测试过程中发现一些问题，希望能够给予帮助。
1、我们在输入端输入固定信号，通过运行软件打印输出信号出现无规律突跳现象。如下为部分打印的输出数据：
（九路AD测试数据，2-9通道短接，1通道固定信号输入，单位毫伏）
Channel1=127.386521
Channel1=127.249569
Channel1=127.310352
Channel1=127.383909
Channel1=127.345219
Channel1=127.498473
Channel1=127.304534
Channel1=124.137772
Channel1=127.364546
Channel1=127.473443
Channel1=127.416875
Channel1=127.366232
Channel1=127.390288
Channel1=127.041611
Channel1=127.098906
Channel1=127.173799
Channel1=127.160172
Channel1=127.288516
Channel1=127.359855
Channel1=124.134092
Channel1=127.476981
Channel1=127.510580
Channel1=127.222052
Channel1=127.148076
Channel1=127.109911
Channel1=127.076918
Channel1=127.320980
Channel1=127.323648
Channel1=127.335932
Channel1=127.337407
Channel1=127.514082
Channel1=127.499506
Channel1=127.233353
Channel1=127.072852
Channel1=127.067674
Channel1=123.945175
Channel1=127.091292
Channel1=127.107072
Channel1=127.306097
Channel1=127.267259
Channel1=127.167264
Channel1=127.316280
Channel1=152.818520
Channel1=127.350961
Channel1=127.266604
Channel1=127.258757
Channel1=124.101284
Channel1=127.240173
Channel1=127.267108
Channel1=127.234491
2、通过示波器连接ADS1281的SCLK和DRDY引脚，出现如附件图所示波形，在DRDY上叠加了一些突跳脉冲。是否是这组突跳脉冲引起的数据突跳？
3、测试ADS1281EVM也出现同上的情况，想问下这个demo板能不能稳定到1微伏，如果不能，怎样可提高稳定性使其稳定到0.1微伏或1微伏？
