{"error":{"root_cause":[{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*AD7933/AD7934,pdf datasheet (P.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"recommend_keyword_search_v1","node":"-Gn7X2aRSFmN2hMyaNEUCA","reason":{"type":"query_shard_exception","reason":"failed to create query: {\n \"regexp\" : {\n \"keyword\" : {\n \"value\" : \".*AD7933/AD7934,pdf datasheet (P.*\",\n \"flags_value\" : 65535,\n \"max_determinized_states\" : 10000,\n \"boost\" : 1.0\n }\n }\n}","index_uuid":"SON-ziQURzKK3JljPlVlCQ","index":"recommend_keyword_search_v1","caused_by":{"type":"illegal_argument_exception","reason":"expected ')' at position 34"}}}]},"status":400}
我采用STM32驱动AD7934芯片,一直不能读出AD值。时钟我采用的STM32内部输出输出,频率为8M。通过仿真发现,CONVST置低后,AD7934并没有启动转换,使BUSY信号变为高电平
2018-12-14 14:59
您好,最近在使用贵公司的AD7934芯片,4通道,1.5MSPS,12位并行的那种。以前用的是单端单通道1M的采样率,现在想用4通道轮询转换模式,想问您下,4通道同时都用的话每个通道的最高样率能达到多少?在datasheet上有没有具体的体现?
2023-12-12 07:07
我采用STM32驱动AD7934芯片,一直不能读出AD值。 时钟我采用的STM32内部输出输出,频率为8M。通过仿真发现,CONVST置低后,AD7934并没有启动转换,使BUSY信号变为高电平
2023-11-23 06:04
尊敬的工程师:您好,最近在使用贵公司的AD7934芯片,4通道,1.5MSPS,12位并行的那种。以前用的是单端单通道1M的采样率,现在想用4通道轮询转换模式,想问您下,4通道同时都用的话每个通道的最高样率能达到多少?在datasheet上有没有具体的体现?祝好。
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