Other Parts Discussed in Thread:ADS1258 现在是这样使用ADS1258电压参考的,VREFP接2.5V电压,VREFN接地,因为采集信号都是正压的,所以VREFN接了地,想问这样用法可以吗?会不会影响ADS1258正常工作?
https://e2e.ti.com/support/data-converters-group/data-converters/f/data-converters-forum/921127/ads1299-what-is-the-importance-of-vrefp-and-vrefn 器件型号:ADS1299 您好! 我设计了一个 PCB 来从 ads1299获取 EEG 信号。 其中 VREFP 接地、VREFN 连接到电容器。 我还可以采...
1. 将VREFP接+2.5V：将VREFP管脚连接到一个+2.5V的电源，作为正电压参考。2. 将VREFN接-2.5V：...
:VCCINT_VCU;B. XADC/System Monitor供电电源:VCCADC、VREFP、VREFN等;C. GT Transceiver供电电源:VCCINT_GT、VMGTAVCC lzr8585852022-09-27 08:00:00 《模拟对话精彩系列》用20位DAC实现1 ppm精度 长期稳定性优于0.1 ppm。作为一种高电压器件,采用双电源供电,最高±16.5 V。输出电压范围由正负基准电压VREFP...
55V，AVDD≥4.4V，且AVDD-AVSS≤5V.VREFP、VREFN根据供电电压和数据手册需满足以下条件：...
English : How to connect VREFP_ADC and VREFN_ADC? The requirements on Demo and PCG are different Translate 0 Kudos Copy link Reply Farabi Employee 02-03-2025 06:20 AM 124 Views Hello, Connect to GND if you dont use ADC , follow DEMO board connection if you use ...
由于ADC 转换是以参考电压(VREFN、VREFP) 为基准, 所以基准的变化必然也会导致 ADC 结果的偏差. 所以尽量要保证参考电压的稳定性 toun lee: 回复user151383853: 麻烦你看一下左边的坐标轴(电压),能通过波形对比那个下降的幅度就是参考电压的波动么?
English : How to connect VREFP_ADC and VREFN_ADC? The requirements on Demo and PCG are different Translate 0 Kudos Copy link Reply Farabi Employee 02-03-2025 06:20 AM 130 Views Hello, Connect to GND if you dont use ADC , follow DEMO board connection...
AVDD - 3.3V AVSS - GND VREFP - 3.3V VREFN - GND bridge Vexc+ 3.3V bridge Vexc- GND It is based on this configuration - Although this configuration would meet the requirements of the absolute voltage levels on the VREF pins, it would exceed the diff...
1. With this setup the allowed input range for either INP or INN is -2.5V to +2.0V, is this Correct? 2. For our final design we would like to have a symetrical input range of +/-2.25V. I believe that I have to add two external references, one of -2.25V on VREFN and +2.2...