关于AD9122输出波形的问题

Hi GreenClementine ,

抱歉，我遗漏了您的查询. 您能否提供包含您输入到 AD9122 的数据的 .txt 文件？它似乎是一种任意波形（而不是正弦波之类的函数）。您很可能发送的是 2 的补码数据，但 AD9122 中的数据格式设置为无符号二进制（反之亦然）。图 69 仅表示 AD9122 的输出是差分的（即 IOUTP/IOUTN 和 QOUTP/QOUTN），并通过在输出端使用差分变压器或平衡器转换为单端（具有相同的峰值电压，但共模误差源减少）。

Apologies for missing your query. Can you provide the .txt file containing the data you input to AD9122? It seems it's an arbitrary waveform (as opposed to a function like a sinusoid). It's likely that you are sending 2's complement data but the data format in AD9122 is set to unsigned binary (or vice-versa). Figure 69 only says that the output of AD9122 is differential (i.e. IOUTP/IOUTN and QOUTP/QOUTN), and is converted to single-ended (with the same peak voltage but with the common-mode error sources reduced) by using differential transformers or baluns at the output. 

Best regards,
Marco

Hi GreenClementine ,

抱歉，我遗漏了您的查询. 您能否提供包含您输入到 AD9122 的数据的 .txt 文件？它似乎是一种任意波形（而不是正弦波之类的函数）。您很可能发送的是 2 的补码数据，但 AD9122 中的数据格式设置为无符号二进制（反之亦然）。图 69 仅表示 AD9122 的输出是差分的（即 IOUTP/IOUTN 和 QOUTP/QOUTN），并通过在输出端使用差分变压器或平衡器转换为单端（具有相同的峰值电压，但共模误差源减少）。

Apologies for missing your query. Can you provide the .txt file containing the data you input to AD9122? It seems it's an arbitrary waveform (as opposed to a function like a sinusoid). It's likely that you are sending 2's complement data but the data format in AD9122 is set to unsigned binary (or vice-versa). Figure 69 only says that the output of AD9122 is differential (i.e. IOUTP/IOUTN and QOUTP/QOUTN), and is converted to single-ended (with the same peak voltage but with the common-mode error sources reduced) by using differential transformers or baluns at the output. 

Best regards,
Marco