https://e2echina.ti.com/support/data-converters/zh-CNTelligent Community 13https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1085797/ads1261-q1-adc-ic-adc/3911764Tue, 28 Jul 2026 09:42:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:f8055ba2-5b3c-4cf4-8901-5c4217e01642hui xuan你好，重新回到ADC丢状态的问题，这个是我的ADC的外围电路，目前来说，我给我的待测芯片的电源脚force 0V 去测量OS时，ADC就会出现之前说到的丢状态的值，只有重新上下电才能恢复。我的待测芯片和ADC是一个AGND，其他相连的地方，只有AIN输入，从我的理解的角度，AIN输入不会造成 类似0x0003fe03，0x01fe01，0xfe01fe 的值，所以我担心会不会是GND的影响https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1085797/ads1261-q1-adc-ic-adc/3911763Tue, 28 Jul 2026 09:42:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:09ef1faa-4611-4c32-84db-2917ed645fdfhui xuan你好，重新回到ADC丢状态的问题，这个是我的ADC的外围电路，目前来说，我给我的待测芯片的电源脚force 0V 去测量OS时，ADC就会出现之前说到的丢状态的值，只有重新上下电才能恢复。我的待测芯片和ADC是一个AGND，其他相连的地方，只有AIN输入，从我的理解的角度，AIN输入不会造成 类似0x0003fe03，0x01fe01，0xfe01fe 的值，所以我担心会不会是GND的影响https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086805/ads122s14-ads122s14-ads122s14-no-spi-response-after-enabling-idac-200-a-outputTue, 28 Jul 2026 09:14:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:2aae18c3-6a88-414b-aebd-fb5287d718c2? ?Part Number: ADS122S14 Other Parts Discussed in Thread: MSPM0G3507 , Hardware setup: MCU: MSPM0G3507 ADC: ADS122S14 problem：The initialization using the DEMO program can communicate with the ADC. However, after modifying the initialization, I was unable to communicate with the ADC, and even when I used the DEMO program for initialization again, I still couldn't communicate with the ADC. Has the ADC failed?I need design a three-wire PT100 RTD measurement and two IDAC current source.Could you please help me analyze what caused this? demo progrom: my progrom:ADS122S14MSPM0G3507能源基础设施https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086803/ads122s14-ads122s14-idac-configuration-causes-spi-communication-failureTue, 28 Jul 2026 08:58:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:25edfad8-f835-43f6-99c8-da33c8aef2ac? ?Part Number: ADS122S14 Other Parts Discussed in Thread: MSPM0G3507 , Hardware setup: MCU: MSPM0G3507 ADC: ADS122S14 problem：The initialization using the DEMO program can communicate with the ADC. However, after modifying the initialization, I was unable to communicate with the ADC, and even when I used the DEMO program for initialization again, I still couldn't communicate with the ADC. Has the ADC failed?I need design a three-wire PT100 RTD measurement and two IDAC current source.Could you please help me analyze what caused this? demo program: my program:ADS122S14MSPM0G3507能源基础设施https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086799/ads122s14-ads122s14-idac-configuration-causes-spi-communication-failureTue, 28 Jul 2026 08:52:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:3698c25b-316f-4d71-b1d7-b1490cab0538? ?Part Number: ADS122S14 Other Parts Discussed in Thread: MSPM0G3507 , Hardware setup: MCU: MSPM0G3507 ADC: ADS122S14 problem：The initialization using the DEMO program can communicate with the ADC. However, after modifying the initialization, I was unable to communicate with the ADC, and even when I used the DEMO program for initialization again, I still couldn't communicate with the ADC. Has the ADC failed?I need design a three-wire PT100 RTD measurement and two IDAC current source.Could you please help me analyze what caused this? demo program: my program:测试和测量ADS122S14MSPM0G3507https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086592/adc3669evm-adc-adc-common-mode-voltage/3911736Tue, 28 Jul 2026 05:16:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:e7a1c9f7-a20e-461b-bc55-5a95b6fc867bVivian Gao1. 可能原因如下： R154 // R155 = 750Ω → 提供低输出阻抗 R156 = 10kΩ → 与ADC3669的VCM输出形成合理的驱动能力匹配 OPA376作为缓冲器 → 隔离阻抗,提供低输出阻抗驱动LMH5401 CM引脚，5401的CM引脚阻抗比较高 2. 内部1.4Vhttps://e2echina.ti.com/support/data-converters/f/data-converters-forum/1085797/ads1261-q1-adc-ic-adc/3911725Tue, 28 Jul 2026 03:24:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:521a1cfb-3865-4a44-95ec-00a87595c9a9Alice您好， 差分输入电压范围是±VREF / Gain。 关于误差问题，请参考 ADS1261-Q1: Combining DC errors and noise - Data converters forum - Data converters - TI E2E support forums 如有更多疑问，请重新发帖专题讨论。https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1081800/ads1298/3911720Tue, 28 Jul 2026 02:34:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:2010b398-ec5d-4491-b91b-d5264b9741e3Links是的，可以在这个链接回复 www.ti.com.cn/.../customer-support.htmlhttps://e2echina.ti.com/support/data-converters/f/data-converters-forum/1083873/ads1299-ads1299/3911082Mon, 27 Jul 2026 09:48:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:19b39bca-32bc-4d2d-aab2-4a147b5ccbb8SHEN Rui您好，请问调查进度如何？https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086595/lsf0102-2026-2027-ti/3911056Mon, 27 Jul 2026 06:00:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:e003c0df-4ae8-46c5-8e5e-b7b55054d18eLydia您好， 关于订单 问题请联 系客 户 支持中心，会有客服帮助您， https://www.ti.com.cn/zh-cn/info/customer-support.htmlhttps://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086032/ads127l18-ads127l18-sinc4/3911051Mon, 27 Jul 2026 05:35:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:5217fc93-2aee-4425-a0b0-56560d44b3a4Eirwen可以参考下面软硬件资料以及相关帖子对照检查下： https://www.ti.com.cn/cn/lit/pdf/ZHCUBT8 https://github.com/TexasInstruments/precision-adc-examples/tree/main/devices/ads127l18/verilog https://www.ti.com.cn/tool/cn/download/ADS127L18-MSPM0-EXAMPLE-CODE ADS127L18: How to set DCLK frequency in Hardware Programming Mode - Data converters forum - Data converters - TI E2E support forumshttps://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086592/adc3669evm-adc-adc-common-mode-voltage/3911032Mon, 27 Jul 2026 03:57:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:b956273f-936a-4b8d-82ec-c168a50149b0Vivian Gao感谢您对TI产品的关注。 我们正在核实您的问题，请等待我们的答复。 Thank you for your attention to TI products. We are verifying your issue, please wait for our reply.https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1085797/ads1261-q1-adc-ic-adc/3911030Mon, 27 Jul 2026 03:50:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:197533ac-f024-49a0-b1d8-da7a33516daahui xuan你好，感谢您的回复，我这边对于这个问题进行一些补充。关于丢状态的我稍后再补充一份资料和现象给您，我现在比较急的一个问题是，这颗ADC 量-40mv的电压时，误差在400uv左右，-10mv时，误差在95uv，这个是合理的嘛，这颗ADC的测量负电压的能力是否有。我用的是AIN0 接4.096的ref，AIN0接AGNDhttps://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086592/adc3669evm-adc-adc-common-mode-voltageMon, 27 Jul 2026 03:33:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:74a0e163-b08b-4c5c-aabe-d8f52c220764T yhPart Number: ADC3669EVM Other Parts Discussed in Thread: ADC3669 , LMH5401 , OPA376 绿框部分1.5K和10K电阻值是根据什么确定的？/How are the 1.5K and 10K resistor values in the green box determined? 红框部分连接了ADC3669的Vcm输出引脚（Pin21），这个是ADC内置的1.4V基准源吗？/The part in the red box is connected to the Vcm output pin (Pin 21) of the ADC3669. Is this the ADC's built-in 1.4V reference source?ADC3669LMH5401OPA376ADC3669EVMhttps://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086290/ads1299eegfe-pdk-ads1299-evm-mmb0-dsp-error-6004/3911011Mon, 27 Jul 2026 02:20:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:115e270f-3017-4986-be08-c9882a054a22Alice您好， ADS1299EEG-FE EEG Front-End Performance Demonstration Kit (Rev. B) 电脑操作系统是什么？ [quote userid="181096" url="~/support/data-converters/f/data-converters-forum/1086290/ads1299eegfe-pdk-ads1299-evm-mmb0-dsp-error-6004"]设备管理器中显示驱动安装异常或无法识别设备 [/quote] 如果能识别出USB设备，怀疑和驱动相关。 请参考链接文档检查MMB0驱动问题。 [FAQ] How do I resolve MMB0 driver installation issues - Data converters forum - Data converters - TI E2E support forums ADS1299EEGFE-PDK: Error code 6004 - Data converters forum - Data converters - TI E2E support forums 这个帖子中有MMB0的原理图。 [FAQ] What documentation is available for the MMB0? - Data converters forum - Data converters - TI E2E support forumshttps://e2echina.ti.com/support/data-converters/f/data-converters-forum/1085789/dac37j82evm-dac37j82-unexpectedly-long-trigger-to-analog-output-latency-in-jesd204b-subclass-1-mode/3911010Mon, 27 Jul 2026 02:20:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:49a39b81-6b05-4ec5-af28-6f1212a2bef5Daniel您好 感谢您的信任 关于这方面完整的模块初始化代码没有 https://www.ti.com.cn/cn/lit/pdf/slaa696 只有相关指导说明。https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1085789/dac37j82evm-dac37j82-unexpectedly-long-trigger-to-analog-output-latency-in-jesd204b-subclass-1-mode/3910994Mon, 27 Jul 2026 01:39:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:95f61c79-1935-4475-89ca-f4e6588a25afShiHao wangThank you. We have attached our complete DAC register configuration as K32.txt for your review. The configuration described below is based on this file. We understand from Section 7.2 that the data passes through the JESD204B interface, input mux, PA protection, interpolation/FIR, mixer/NCO, dither, QMC, fractional-delay and output mux blocks. According to our K32.txt configuration, interpolation, PAP, mixer/NCO, QMC, dither, fractional delay and output delay are disabled or bypassed. The datasheet specifies a digital latency of 11 DACCLK cycles for the corresponding low-latency condition. Could you please review K32.txt and clarify which blocks in the Section 7.2 functional block diagram remain active in our current configuration, and whether their bypass paths still contain fixed pipeline latency? Could these blocks account for approximately 150 DACCLK cycles of additional latency? Could TI also provide a complete register configuration for a 1x direct data path with all optional digital blocks bypassed, including interpolation/FIR, PAP, mixer/NCO, dither, QMC, fractional delay and output delay? This would allow us to compare it directly with K32.txt and verify that the DAC is configured for minimum latency.https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1085789/dac37j82evm-dac37j82-unexpectedly-long-trigger-to-analog-output-latency-in-jesd204b-subclass-1-mode/3910978Mon, 27 Jul 2026 00:33:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:f83b87b2-2f46-4bd2-9eb1-1ad7fa192fdfDaniel您好 根据datasheet如图所示均产生部分影响。https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086290/ads1299eegfe-pdk-ads1299-evm-mmb0-dsp-error-6004/3910694Sat, 25 Jul 2026 10:11:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:285d5ac0-bd18-49e2-9afc-3a7fc27f9b3eLi Jinnuo你们会联系我么，请尽快https://e2echina.ti.com/support/data-converters/f/data-converters-forum/1086290/ads1299eegfe-pdk-ads1299-evm-mmb0-dsp-error-6004/3909901Fri, 24 Jul 2026 07:32:00 GMT91561404-af28-475a-b96b-cb6cbaadd097:05d15c4b-06f2-4af0-926c-9560d241af34Alice您好， 已经收到了您的案例，调查需要些时间，感谢您的耐心等待。