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<?xml-stylesheet type="text/xsl" href="https://ez.analog.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>问答 - Recent Threads</title><link>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><lastBuildDate>Tue, 06 Jan 2026 06:23:04 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463" /><item><title>鉴频鉴相器评估版EVAL-HMC439QS16G 的NU和ND SMA输出能否分别接运算放大器的同相输入端和反向输入端来获得误差电压信号</title><link>https://ez.analog.com/thread/601922?ContentTypeID=0</link><pubDate>Tue, 06 Jan 2026 06:23:04 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:028fe9d3-0648-4180-a614-4d6b6fb93901</guid><dc:creator>zrh</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/601922?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/601922/eval-hmc439qs16g-nu-nd-sma/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;我正在进行一个锁相环的项目，使用ADI公司的一款数字鉴频鉴相器评估版EVAL-HMC439QS16G来获得误差信号，我想知道是否可以直接将EVAL-HMC439QS16G的两个输出SMA接口分别连接到运算放大器的正相输入端和反相输入端来得到误差信号。如果可以的话，运算放大器的输入阻抗应该为多少较好？&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>HMC394单端输出</title><link>https://ez.analog.com/thread/600692?ContentTypeID=0</link><pubDate>Fri, 07 Nov 2025 03:13:29 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:d8aa6193-cb71-4957-bebe-ff5fd50f1a6b</guid><dc:creator>eric2604</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/600692?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/600692/hmc394/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;设计HMC394时，只需要PIN 16的正相输出，如何处理PIN 17?悬空还是接地&lt;/p&gt;
&lt;p&gt;&lt;span&gt;When you design HMC394, you only need positive phase output from PIN 16. What about PIN 17? Suspended or grounded&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>我使用二级管进行钳位，发现没有任何效果</title><link>https://ez.analog.com/thread/600351?ContentTypeID=0</link><pubDate>Sat, 25 Oct 2025 18:00:48 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:52812c38-b0ba-460b-8951-56c4f5752b08</guid><dc:creator>dotey</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/600351?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/600351/thread/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;如果所示，我正在尝试通过钳位和滤波整流把交流电转成直流电，但是我发现使用二极管进行钳位时没有任何效果，电线a的电压还是-10v~10v&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-components-multipleuploadfilemanager/b75a6dce_2D00_a967_2D00_465a_2D00_b090_2D00_a3d06d52dc83-138726-complete/_2A624F5C_2025_2D00_09_2D00_22-09.15.48.png" /&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/_2A624F5C_2025_2D00_10_2D00_26-01.41.05.png" /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>ad9361接收到的iq数据互换</title><link>https://ez.analog.com/thread/600247?ContentTypeID=0</link><pubDate>Wed, 22 Oct 2025 04:06:23 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:4e61097e-d8c4-4928-a09e-72fc971d12bc</guid><dc:creator>littlewang</dc:creator><slash:comments>2</slash:comments><comments>https://ez.analog.com/thread/600247?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/600247/ad9361-iq/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&lt;img src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1761105507999v1.png" alt=" " /&gt;&lt;/p&gt;
&lt;p&gt;这个图的下半部分是我用ila分别抓取DDR取出到dac发送的数据，上面的则是adc接收到的信号，这里看调制的qpsk是正常的&lt;/p&gt;
&lt;p&gt;但是当我断电重启写入后，adc接收到的数据像是IQ两路的信号互换?&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:125px;max-width:850px;" height="125" src="https://ez.analog.com/resized-image/__size/1700x250/__key/communityserver-discussions-components-files/657/pastedimage1761105665410v2.png" width="850" alt=" " /&gt;&lt;/p&gt;
&lt;p&gt;我用的是zc706和ad9361以及在no_os的基础上进行编码，主要修改了dac_core.c的初始化，用的是1R1T，调用的是DMA&lt;/p&gt;
&lt;p&gt;主函数&lt;/p&gt;
&lt;p&gt;Xil_ICacheEnable();&lt;br /&gt; Xil_DCacheEnable();&lt;/p&gt;
&lt;p&gt;default_init_param.gpio_resetb = GPIO_RESET_PIN;&lt;/p&gt;
&lt;p&gt;gpio_init(GPIO_DEVICE_ID);&lt;br /&gt; gpio_direction(default_init_param.gpio_resetb, 1);&lt;br /&gt; spi_init(SPI_DEVICE_ID, 1, 0);&lt;/p&gt;
&lt;p&gt;ad9361_init(&amp;amp;ad9361_phy, &amp;amp;default_init_param);&lt;br /&gt; // AD9361 增益通常可达 70 dB 以上，我们设 70 dB 来充分放大信号。&lt;br /&gt; // ad9361_set_rx_rf_gain(ad9361_phy, 0, 70); // 通道 0 (RX1), 增益 70 dB&lt;br /&gt; ad9361_set_tx_fir_config(ad9361_phy, tx_fir_config);&lt;br /&gt; ad9361_set_rx_fir_config(ad9361_phy, rx_fir_config);&lt;/p&gt;
&lt;p&gt;// 1. 执行 TX 正交误差校准 (TX_QUAD_CAL)&lt;br /&gt; // 用于修正 I/Q 信号的幅度和相位不平衡，arg 设为 0&lt;br /&gt; ad9361_do_calib(ad9361_phy, TX_QUAD_CAL, 0);&lt;br /&gt; ad9361_do_calib(ad9361_phy, RFDC_CAL, 0); //&lt;br /&gt; printf(&amp;quot;Calibrations complete.\n&amp;quot;);&lt;br /&gt; dac_init(ad9361_phy, DATA_SEL_DMA, 1);&lt;/p&gt;
&lt;p&gt;&lt;br /&gt; mdelay(500);&lt;/p&gt;
&lt;p&gt;dac_start_sync(ad9361_phy, 1); // 强制同步启动&lt;/p&gt;
&lt;p&gt;mdelay(100); // 增加一个短延迟来等待同步完成&lt;br /&gt; adc_init(ad9361_phy);&lt;/p&gt;
&lt;p&gt;adc_capture(16384, ADC_DDR_BASEADDR);&lt;/p&gt;
&lt;p&gt;Xil_DCacheInvalidateRange(ADC_DDR_BASEADDR,&lt;br /&gt; ad9361_phy-&amp;gt;pdata-&amp;gt;rx2tx2 ? 16384 * 8 : 16384 * 4);&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;dac_core.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;const uint16_t sine_lut[128] = {&lt;br /&gt; 0x000, 0x064, 0x0C8, 0x12C, 0x18F, 0x1F1, 0x252, 0x2B1,&lt;br /&gt; 0x30F, 0x36B, 0x3C5, 0x41C, 0x471, 0x4C3, 0x512, 0x55F,&lt;br /&gt; 0x5A7, 0x5ED, 0x62E, 0x66C, 0x6A6, 0x6DC, 0x70D, 0x73A,&lt;br /&gt; 0x763, 0x787, 0x7A7, 0x7C2, 0x7D8, 0x7E9, 0x7F5, 0x7FD,&lt;br /&gt; 0x7FF, 0x7FD, 0x7F5, 0x7E9, 0x7D8, 0x7C2, 0x7A7, 0x787,&lt;br /&gt; 0x763, 0x73A, 0x70D, 0x6DC, 0x6A6, 0x66C, 0x62E, 0x5ED,&lt;br /&gt; 0x5A7, 0x55F, 0x512, 0x4C3, 0x471, 0x41C, 0x3C5, 0x36B,&lt;br /&gt; 0x30F, 0x2B1, 0x252, 0x1F1, 0x18F, 0x12C, 0xC8, 0x64,&lt;br /&gt; 0x000, 0xF9B, 0xF37, 0xED3, 0xE70, 0xE0E, 0xDAD, 0xD4E,&lt;br /&gt; 0xCF0, 0xC94, 0xC3A, 0xBE3, 0xB8E, 0xB3C, 0xAED, 0xAA0,&lt;br /&gt; 0xA58, 0xA12, 0x9D1, 0x993, 0x959, 0x923, 0x8F2, 0x8C5,&lt;br /&gt; 0x89C, 0x878, 0x858, 0x83D, 0x827, 0x816, 0x80A, 0x802,&lt;br /&gt; 0x800, 0x802, 0x80A, 0x816, 0x827, 0x83D, 0x858, 0x878,&lt;br /&gt; 0x89C, 0x8C5, 0x8F2, 0x923, 0x959, 0x993, 0x9D1, 0xA12,&lt;br /&gt; 0xA58, 0xAA0, 0xAED, 0xB3C, 0xB8E, 0xBE3, 0xC3A, 0xC94,&lt;br /&gt; 0xCF0, 0xD4E, 0xDAD, 0xE0E, 0xE70, 0xED3, 0xF37, 0xF9B&lt;br /&gt;};&lt;br /&gt;const uint16_t sine_lut1[128] = {&lt;br /&gt; 0x000, 0xF9B, 0xF37, 0xED3, 0xE70, 0xE0E, 0xDAD, 0xD4E,&lt;br /&gt; 0xCF0, 0xC94, 0xC3A, 0xBE3, 0xB8E, 0xB3C, 0xAED, 0xAA0,&lt;br /&gt; 0xA58, 0xA12, 0x9D1, 0x993, 0x959, 0x923, 0x8F2, 0x8C5,&lt;br /&gt; 0x89C, 0x878, 0x858, 0x83D, 0x827, 0x816, 0x80A, 0x802,&lt;br /&gt; 0x800, 0x802, 0x80A, 0x816, 0x827, 0x83D, 0x858, 0x878,&lt;br /&gt; 0x89C, 0x8C5, 0x8F2, 0x923, 0x959, 0x993, 0x9D1, 0xA12,&lt;br /&gt; 0xA58, 0xAA0, 0xAED, 0xB3C, 0xB8E, 0xBE3, 0xC3A, 0xC94,&lt;br /&gt; 0xCF0, 0xD4E, 0xDAD, 0xE0E, 0xE70, 0xED3, 0xF37, 0xF9B,&lt;br /&gt; 0x000, 0x064, 0x0C8, 0x12C, 0x18F, 0x1F1, 0x252, 0x2B1,&lt;br /&gt; 0x30F, 0x36B, 0x3C5, 0x41C, 0x471, 0x4C3, 0x512, 0x55F,&lt;br /&gt; 0x5A7, 0x5ED, 0x62E, 0x66C, 0x6A6, 0x6DC, 0x70D, 0x73A,&lt;br /&gt; 0x763, 0x787, 0x7A7, 0x7C2, 0x7D8, 0x7E9, 0x7F5, 0x7FD,&lt;br /&gt; 0x7FF, 0x7FD, 0x7F5, 0x7E9, 0x7D8, 0x7C2, 0x7A7, 0x787,&lt;br /&gt; 0x763, 0x73A, 0x70D, 0x6DC, 0x6A6, 0x66C, 0x62E, 0x5ED,&lt;br /&gt; 0x5A7, 0x55F, 0x512, 0x4C3, 0x471, 0x41C, 0x3C5, 0x36B,&lt;br /&gt; 0x30F, 0x2B1, 0x252, 0x1F1, 0x18F, 0x12C, 0xC8, 0x64&lt;br /&gt;};&lt;/p&gt;
&lt;p&gt;uint8_t qpsk_bits[8] = {0,0, 1,0, 0,1, 1,1}; // 每两个比特作为一个符号: [I,Q]&lt;br /&gt; uint32_t sample_idx = 0;&lt;/p&gt;
&lt;p&gt;for (int sym_idx = 0; sym_idx &amp;lt; 4; sym_idx++) {&lt;br /&gt; uint8_t bit_i = qpsk_bits[sym_idx * 2]; // I 路比特&lt;br /&gt; uint8_t bit_q = qpsk_bits[sym_idx * 2 + 1]; // Q 路比特&lt;/p&gt;
&lt;p&gt;// 每个符号对应 tx_count 个采样点&lt;br /&gt; for (int i = 0; i &amp;lt; tx_count; i++) {&lt;br /&gt; index_q1 = i + (tx_count / 4);&lt;br /&gt; if(index_q1 &amp;gt;= tx_count)&lt;br /&gt; index_q1 -= tx_count;&lt;br /&gt; uint32_t data_i = (bit_i == 0) ? (sine_lut[i] &amp;lt;&amp;lt; 20) : (sine_lut1[i] &amp;lt;&amp;lt; 20);&lt;br /&gt; uint32_t data_q = (bit_q == 0) ? (sine_lut[index_q1] &amp;lt;&amp;lt; 4) : (sine_lut1[index_q1] &amp;lt;&amp;lt; 4);&lt;br /&gt; Xil_Out32(DAC_DDR_BASEADDR + sample_idx * 4, data_i | data_q);&lt;br /&gt; sample_idx++;&lt;br /&gt; }&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>AD9361按照 AD9361 Evaluation Software 2.1.3导出的寄存器表进行配置并点频，点频结果和设置结果有较大误差</title><link>https://ez.analog.com/thread/599523?ContentTypeID=0</link><pubDate>Tue, 23 Sep 2025 08:40:39 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:8721a81e-4756-497a-a2da-efbf8f7a5a6d</guid><dc:creator>weaponddr</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/599523?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/599523/ad9361-ad9361-evaluation-software-2-1-3/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;你好，我正在使用AD9361+ZEDBOARD进行测试。我通过AD9361 Evaluation Software 2.1.3生成了寄存器值表，并通过SPI直接写入到AD9361中，SPI写入速度为20MHz，在配置完成后实际测得的频率和设置的频率存在误差，且随着频率升高误差变大，并且频点不稳定会有抖动，请问这个可能是什么原因导致的呢？利用频谱仪测得的频谱图象如下图所示。&lt;br /&gt;200MHz：&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/200MHz.png" alt=" " /&gt;&lt;/p&gt;
&lt;p&gt;800MHz：&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/800MHz.png" alt=" " /&gt;&lt;/p&gt;
&lt;p&gt;2GHz：&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/2000MHz.png" /&gt;&lt;/p&gt;
&lt;p&gt;3GHz：&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/3000MHz.png" /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>HMC794LP3E</title><link>https://ez.analog.com/thread/599492?ContentTypeID=0</link><pubDate>Mon, 22 Sep 2025 10:30:23 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:ca40c3d8-a89e-419d-838b-dc2185bafacb</guid><dc:creator>Anton111Kroessen</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/599492?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/599492/hmc794lp3e/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&lt;span&gt;Hello!&lt;/span&gt;&lt;br /&gt;&lt;span&gt;Could you please clarify whether components HMC794LP3E are marked this way?&lt;/span&gt;&lt;br /&gt;&lt;span&gt;In the datasheet it is stated that the marking should be 794, but ours are marked H794.&lt;/span&gt;&lt;br /&gt;&lt;span&gt;Could this be an error in the documentation?&lt;/span&gt;&lt;br /&gt;&lt;span&gt;Thank you!&lt;br /&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1758536932383v1.png" alt=" " /&gt;&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>HMC62A</title><link>https://ez.analog.com/thread/595589?ContentTypeID=0</link><pubDate>Mon, 12 May 2025 06:05:27 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:e8e95935-1754-4942-b31d-1d68d980361e</guid><dc:creator>12313</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/595589?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/595589/hmc62a/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;这个衰减器对 信号强度-80 ~-90 dbm的信号，可以控制衰减吗？&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>ADF4351解调FM,FSK信号时如何设置环路滤波器</title><link>https://ez.analog.com/thread/594130?ContentTypeID=0</link><pubDate>Thu, 27 Mar 2025 13:12:54 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:185fdf4b-6798-4a1a-89a3-b37bbba6590d</guid><dc:creator>Alexander3916</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/594130?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/594130/adf4351-fm-fsk/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&lt;img class="align-right" style="float:right;max-height:184px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x368/__key/communityserver-discussions-components-files/657/Snipaste_5F00_2025_2D00_03_2D00_27_5F00_21_2D00_10_2D00_08.png" /&gt;我现在要使用一个锁相环去解调一个载波频率为2MHz，码率为6KHz、8KHz、10KHz，频移键控系数为2到5的FSK信号，我该如何去设计CPout引脚到Vtune两引脚之间的环路滤波器，环路滤波器采用如图的结构，谢谢您为我解答&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>官方提供的S参数仿真模型和datasheet中的参数匹配不上</title><link>https://ez.analog.com/thread/593170?ContentTypeID=0</link><pubDate>Tue, 04 Mar 2025 03:11:09 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:34e73093-ac94-4d0b-b112-4193c51a6ebb</guid><dc:creator>zjuser</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/593170?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/593170/s-datasheet/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1741057789453v1.png" alt=" " /&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;如图所示，上半是HMC553的官方datasheet中关于转换损耗的描述&amp;nbsp; 下半是HMC553官方提供的S参数仿真模型 曲线无法匹配&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>Amplifier's capacitor</title><link>https://ez.analog.com/thread/590717?ContentTypeID=0</link><pubDate>Wed, 18 Dec 2024 09:59:18 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:8bc4d2e7-cc54-40ff-85c8-dd2a59b458e4</guid><dc:creator>mastertu16</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/590717?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/590717/amplifier-s-capacitor/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;Hello,&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;In the recommended component values in the datasheet, I couldn&amp;#39;t find in the market a 100 pF capacitor for RF application (with RF information @ 2 GHz).&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Do you know any 100 pF capacitor reference for this implementation?&amp;nbsp;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;Thank you in advance.&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>HMC973A的工作频率范围是多少   ,网页简介上是0.5G-6Ghz,手册里是0.5G-5GHZ,,手册里也没有(Relative Phase)不同衰减量和相位偏移的指标,这个可以提供一下吗</title><link>https://ez.analog.com/thread/589748?ContentTypeID=0</link><pubDate>Fri, 22 Nov 2024 03:12:03 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:db4858e3-68c2-48b3-9a12-c2157c775f3f</guid><dc:creator>zhoudashuai</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/589748?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/589748/hmc973a-0-5g-6ghz-0-5g-5ghz-relative-phase/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&amp;nbsp;HMC973A的工作频率范围是多少&amp;nbsp; &amp;nbsp;,网页简介上是0.5G-6Ghz,手册里是0.5G-5GHZ,,手册里也没有(Relative Phase)不同衰减量和相位偏移的指标,这个可以提供一下吗&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1732245046542v1.jpeg" alt=" " /&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1732245058969v2.png" alt=" " /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>MAX6817EUT/GH9-T  停产物料替代需求以及尾缀含义</title><link>https://ez.analog.com/thread/587527?ContentTypeID=0</link><pubDate>Thu, 26 Sep 2024 01:26:52 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:99bbe0c5-614a-49a1-8e4e-d1fb1b7a0901</guid><dc:creator>JulienJiao</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/587527?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/587527/max6817eut-gh9-t/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;我们有个打样产品应用的是此&lt;span&gt;控制器，但目前已停产，请求替代物料协助，以及尾缀GH9的含义？&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;MAX6817EUT/GH9-T&amp;nbsp;&amp;nbsp;&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>型号LT8650SPJV#WPBF晶圆内部-3表示什么</title><link>https://ez.analog.com/thread/587467?ContentTypeID=0</link><pubDate>Wed, 25 Sep 2024 02:51:04 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:74b06abd-9905-4e03-8826-4bc3eb610fc1</guid><dc:creator>Andy1212</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/587467?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/587467/lt8650spjv-wpbf--3/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;这个型号&lt;span&gt;LT8650SPJV#WPBF内部晶圆-3代表什么&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1727232575491v2.png" alt=" " /&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1727232589590v3.png" alt=" " /&gt;&lt;/span&gt;&lt;/p&gt;
&lt;div id="qb-sougou-search" style="display:none;"&gt;
&lt;p&gt;搜索&lt;/p&gt;
&lt;p class="last-btn"&gt;复制&lt;/p&gt;
&lt;iframe&gt;&lt;/iframe&gt;&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>LTspice软件打不开</title><link>https://ez.analog.com/thread/587106?ContentTypeID=0</link><pubDate>Sat, 14 Sep 2024 10:26:37 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:28331ddd-4b49-4bf6-b3e3-28ad4659c40e</guid><dc:creator>tyut</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/587106?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/587106/ltspice/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;LTspice软件本身打不开了，应该怎么解决，打开时显示内容如图：&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1726309563840v2.png" alt=" " /&gt;&lt;img style="max-height:240px;max-width:320px;" src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/pastedimage1726309407986v1.png" alt=" " /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>关于HMC850LC3的封装形式</title><link>https://ez.analog.com/thread/586357?ContentTypeID=0</link><pubDate>Sat, 24 Aug 2024 04:49:31 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:108f29bf-2274-46dc-8cfa-575ca630e0b6</guid><dc:creator>Johnlinext</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/586357?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/586357/hmc850lc3/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;您好！最近在使用HMC850LC3，发现从供应商买的芯片有两种封装形式，两者有细微的差别。一种是向下看是正方形直角的，另一种是正方形但是倒圆角的，参考ADI的关于封装的资料好像一种叫punch,一种叫SAWN。请问HMC850LC3这颗料是否有两种封装形式，谢谢！&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>仿真模型</title><link>https://ez.analog.com/thread/585979?ContentTypeID=0</link><pubDate>Tue, 13 Aug 2024 15:26:42 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:5e285ec0-c5ac-44ea-af80-2659b28beb4c</guid><dc:creator>tyut</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/585979?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/585979/thread/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;请问LTspice中的LT1220运算放大器和LT1720比较器可以把他们的模型导出来供其他仿真软件使用吗？&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>LT8650SPJV</title><link>https://ez.analog.com/thread/585321?ContentTypeID=0</link><pubDate>Fri, 26 Jul 2024 02:34:55 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:f76fa51b-673d-4c44-8061-45d94cd42267</guid><dc:creator>Andy1212</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/585321?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/585321/lt8650spjv/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&lt;span&gt;休眠测试发现2台冒烟烧机，3台休眠不开机，原本输出电压3.3V，变为7V以上，电流归0后，5秒不开机 ，经分析为PMIC已被烧毁&lt;/span&gt;&lt;/p&gt;
&lt;div id="qb-sougou-search" style="display:none;"&gt;
&lt;p&gt;搜索&lt;/p&gt;
&lt;p class="last-btn"&gt;复制&lt;/p&gt;
&lt;iframe&gt;&lt;/iframe&gt;&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>软件版本会影响仿真结果吗</title><link>https://ez.analog.com/thread/584873?ContentTypeID=0</link><pubDate>Mon, 15 Jul 2024 03:14:19 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:3d256d74-8240-4dc5-9eca-ea0dc4d7c6ad</guid><dc:creator>tyut</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/584873?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/584873/thread/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;软件版本会影响仿真结果吗，为什么我用一样的元件和参数，但复现不出来和文章里一样的波形（文章是IV版本，我用的是24.0.12），IV版本还能下载吗，如果从哪里能下载？&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>HMC460LC5 vgg problem</title><link>https://ez.analog.com/thread/584664?ContentTypeID=0</link><pubDate>Tue, 09 Jul 2024 11:14:44 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:2d4aba84-4da3-4ddb-9cc9-74f611cb58e5</guid><dc:creator>CATBOY</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/584664?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/584664/hmc460lc5-vgg-problem/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;Hello, &lt;br /&gt;I would like to ask about the question of the gain of the HMC460LC5 changes with the input power. If my input power is below -1dBm, the current changes to 140mA, the amplifier has no gain, and the VGG negative voltage is -0.9V as recommended by the data sheet.I would like to ask if there is a way to amplify the amplifier under the constant fixed negative voltage -0.9V?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>HMC389不同批次芯片3.5G对应调制电压差别比较大</title><link>https://ez.analog.com/thread/584582?ContentTypeID=0</link><pubDate>Mon, 08 Jul 2024 02:56:01 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:95f8d302-8966-4d1d-8328-dd51a1aeaf4e</guid><dc:creator>GDGSJ</dc:creator><slash:comments>4</slash:comments><comments>https://ez.analog.com/thread/584582?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/584582/hmc389-3-5g/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;我们在使用HMC389这个芯片时，发现不同芯片对应3.5G频率输出的调制电压差别很大，甚至和数据手册也对不上，导致硬件调试时比较麻烦。&lt;/p&gt;
&lt;p&gt;我们在官方买的评估板上（板上只有HMC389这一个芯片）焊不同批次芯片测试：&lt;/p&gt;
&lt;p&gt;&lt;span&gt;HMC389 datasheet:&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/HMC389datasheet.png" /&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;HMC389评估板自带的芯片（丝印H389 WV35）：&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/cfs-file/__key/communityserver-discussions-components-files/657/H389_2D00_WV35.bmp" /&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;更换两片芯片到评估板上(丝印H389 LT62)：&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/H389_2D00_LT62.png" /&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;我们板卡上的芯片（H389 JH57）吹下来焊到评估板上，在我们板卡和官方评估板上测试3.5G对应电压都是5.73V，所以也可以排除是我们板卡电路的影响：&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;img style="max-height:240px;max-width:320px;" alt=" " src="https://ez.analog.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/657/H389_2D00_JH57.png" /&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;调制电压差别这么大是因为不同批次的工艺导致的吗？&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>仿真参数调节</title><link>https://ez.analog.com/thread/583972?ContentTypeID=0</link><pubDate>Wed, 19 Jun 2024 08:12:22 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:53a2b20b-59b7-47c4-865c-1f4e0b1e5689</guid><dc:creator>tyut</dc:creator><slash:comments>0</slash:comments><comments>https://ez.analog.com/thread/583972?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/583972/thread/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&lt;span&gt;24版LTspice软件如何实现调节电路参数的同时，仿真波形查看窗口的波形实时同步变化&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>芯片替换</title><link>https://ez.analog.com/thread/583971?ContentTypeID=0</link><pubDate>Wed, 19 Jun 2024 08:11:03 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:9b590b72-3e77-4dca-a16a-33b01b2102f5</guid><dc:creator>123666</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/583971?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/583971/thread/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;你好，请问我目前设计用LTC2662芯片，16位用于五路电流源输出，我想请问有没有功能参数与这款相同但是是单通道或者双通道电流输出，我目前找到的是AD5420但它的输出电流只为20mA。&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>模型导入</title><link>https://ez.analog.com/thread/583582?ContentTypeID=0</link><pubDate>Fri, 07 Jun 2024 06:42:52 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:1f12a2d3-4d76-4498-9077-de0b28506bea</guid><dc:creator>tyut</dc:creator><slash:comments>3</slash:comments><comments>https://ez.analog.com/thread/583582?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/583582/thread/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;&lt;span&gt;我从恩智浦官网下载的三极管模型文件格式为.LIB&amp;nbsp; 具体应该怎么导入到LTspice中使用呢？&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>模型导入</title><link>https://ez.analog.com/thread/583474?ContentTypeID=0</link><pubDate>Wed, 05 Jun 2024 07:40:47 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:480ecdeb-195e-4d19-94b6-0b12bc798a7e</guid><dc:creator>tyut</dc:creator><slash:comments>2</slash:comments><comments>https://ez.analog.com/thread/583474?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/583474/thread/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;我从恩智浦官网下载的三极管模型文件格式为.prm（如下图） 具体应该怎么导入到LTspice中使用呢？%MCEpastebin%&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>60GHz毫米波 OFDM</title><link>https://ez.analog.com/thread/582617?ContentTypeID=0</link><pubDate>Tue, 14 May 2024 03:16:19 GMT</pubDate><guid isPermaLink="false">a884d118-f55f-49de-87eb-b9dbaf99b3e3:8875dc97-c116-4c36-a080-3242119f02ae</guid><dc:creator>DanChun</dc:creator><slash:comments>1</slash:comments><comments>https://ez.analog.com/thread/582617?ContentTypeID=0</comments><wfw:commentRss>https://ez.analog.com/cn/support-reference-library/hmc/f/forum-53065463/582617/60ghz-ofdm/rss?ContentTypeId=0</wfw:commentRss><description>&lt;p&gt;研究802.11ad的60GHz毫米波与OFDM技术结合，&lt;/p&gt;
&lt;p&gt;&lt;span&gt;EVAL-HMC6300或者EVAL-HMC6301可以用于发射机收OFDM信号吗？&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;&lt;span&gt;如果不行的话，有没有相关产品？&lt;/span&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>