{"id":1730,"date":"2023-03-21T10:59:42","date_gmt":"2023-03-21T01:59:42","guid":{"rendered":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=1730"},"modified":"2023-03-27T06:36:46","modified_gmt":"2023-03-26T21:36:46","slug":"dsd-discrete-analog-fir-filter-dacdistribution-details%e9%a0%92%e5%b8%83%e3%81%ae%e8%a9%b3%e7%b4%b0%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6","status":"publish","type":"post","link":"http:\/\/fpga.cool.coocan.jp\/wordpress\/?p=1730","title":{"rendered":"“DSD discrete analog FIR filter DAC”Distribution Details(\u9812\u5e03\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066)"},"content":{"rendered":"\n

Since additional ALTERA CPLDs are hopelessly unavailable, only 6 DSD discrete DACs<\/a> will be distributed.
XILINX CPLDs are available, but when we build a circuit, the S\/N and other performance characteristics are clearly worse than those of ALTERA.
I am considering whether or not to switch to XILINX CPLDs and continue distributing DSD discrete DACs after I run out of ALTERA CPLDs.
I can imagine why XILINX would have poorer analog performance in this case\u2026<\/p>\n\n\n\n

The DSD discrete DAC has a lot of components anyway, so it takes a whole day to do the hand soldering. After that, I need to take measurements.
I need at least 2 days from the start of the project.<\/p>\n\n\n\n

For the new USB board<\/a>, I will distribute only 3 pieces, because it is hopeless to obtain additional FPGAs of XILINX or ALTERA QFP type.<\/p>\n\n\n\n

The new USB boards have already been hand-soldered and tested for operation, so I will write the latest firmware on them and finish manufacturing.
The new USB board includes a small board for rewriting firmware (technically called a JTAG board), a raw small board for FSLED, a connector post
and a harness for connection to the USB board (see photo).<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The new USB board set is 230USD.<\/p>\n\n\n\n

The DSD discrete DAC will be distributed at a price of 200USD.<\/p>\n\n\n\n

Compatible op-amp boards and power supply boards are also available.
Each raw board costs 5USD a complete op-amp board costs 150USD, and a complete power supply board costs 30USD.
These boards are also hand-soldered, so please allow a few days for delivery.<\/p>\n\n\n\n

For orders or questions, please contact us at this address.<\/p>\n\n\n\n

*This price is applicable to those who pay by PayPal from outside Japan. EMS shipping fee will be separately added as a shipping charge.<\/p>\n\n\n\n

ALTERA\u306eCPLD\u306f\u8ffd\u52a0\u5165\u624b\u304c\u7d76\u671b\u7684\u3067\u3059\u306e\u3067\u3001DSD discrete DAC<\/a>\u306f6\u679a\u306e\u307f\u306e\u9812\u5e03\u3068\u306a\u308a\u307e\u3059\u3002
XILINX\u306eCPLD\u306f\u5165\u624b\u3067\u304d\u308b\u306e\u3067\u3059\u304c\u3001\u56de\u8def\u3092\u7d44\u3093\u3067\u307f\u308b\u3068S\/N\u7b49\u3001\u6027\u80fd\u304cALTERA\u3088\u308a\u6e2c\u5b9a\u4e0a\u660e\u3089\u304b\u306b\u60aa\u304f\u306a\u308b\u306e\u3067\u3001
ALTERA\u306eCPLD\u3092\u4f7f\u3044\u5207\u3063\u305f\u3042\u3068\u3001XILINX\u306eCPLD\u306b\u5207\u308a\u66ff\u3048\u3066DSD discrete DAC\u306e\u9812\u5e03\u3092\u7d9a\u884c\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u601d\u6848\u4e2d\u3067\u3059\u3002
\u3053\u306e\u5834\u5408\u306eXILINX\u306e\u307b\u3046\u304c\u30a2\u30ca\u30ed\u30b0\u6027\u80fd\u304c\u52a3\u308b\u7406\u7531\u306b\u3064\u3044\u3066\u306f\u60f3\u50cf\u306f\u3064\u304f\u306e\u3067\u3059\u304c\u30fb\u30fb\u30fb\u3002<\/p>\n\n\n\n

DSD discrete DAC\u306f\u3068\u306b\u304b\u304f\u90e8\u54c1\u70b9\u6570\u304c\u591a\u3044\u3067\u3059\u306e\u3067\u3001\u624b\u534a\u7530\u5b9f\u88c5\u3092\u884c\u3046\u306e\u306b\u4e38\u4e00\u65e5\u5fc5\u8981\u3067\u3059\u3002\u305d\u306e\u5f8c\u306b\u6e2c\u5b9a\u3057\u305f\u308a\u3057\u307e\u3059\u306e\u3067\u3001
\u7740\u624b\u304b\u3089\u6700\u4f4e2\u65e5\u306f\u7d0d\u671f\u3092\u9802\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

\u65b0USB\u57fa\u677f<\/a>\u306f\u3001XILINX\u3084ALTERA\u306eQFP\u30bf\u30a4\u30d7\u306eFPGA\u306e\u8ffd\u52a0\u5165\u624b\u304c\u7d76\u671b\u7684\u3067\u3059\u306e\u3067\u30013\u679a\u306e\u307f\u306e\u9812\u5e03\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

\u65b0USB\u57fa\u677f\u306f\u3001\u3059\u3067\u306b\u624b\u534a\u7530\u5b9f\u88c5\u3092\u7d42\u3048\u3066\u52d5\u4f5c\u78ba\u8a8d\u6e08\u307f\u3067\u3059\u306e\u3067\u3001\u6700\u65b0\u306e\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u3092\u66f8\u304d\u8fbc\u3093\u3067\u88fd\u9020\u306f\u7d42\u4e86\u3057\u307e\u3059\u3002
\u65b0USB\u57fa\u677f\u306b\u306f\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u66f8\u304d\u63db\u3048\u7528\u306e\u5c0f\u57fa\u677f(\u5c02\u9580\u7684\u306b\u306fJTAG\u57fa\u677f\u3068\u79f0\u3057\u307e\u3059)\u3001FSLED\u7528\u306e\u751f\u5c0f\u57fa\u677f\u3001\u30b3\u30cd\u30af\u30bf\u30dd\u30b9\u30c8\u3001
\u306a\u3089\u3073\u306bUSB\u57fa\u677f\u3068\u306e\u63a5\u7d9a\u7528\u30cf\u30fc\u30cd\u30b9\u3092\u6dfb\u4ed8\u3057\u307e\u3059(\u4e0a\u306e\u82f1\u8a9e\u8aac\u660e\u4e2d\u306e\u5199\u771f\u53c2\u7167)\u3002<\/p>\n\n\n\n

\u65b0USB\u57fa\u677f\u30bb\u30c3\u30c8\u306f23,000JPY\u3002
DSD discrete DAC \u306f20,000JPY\u3002<\/p>\n\n\n\n

\u3067\u9812\u5e03\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3059\u3002<\/p>\n\n\n\n

\u306a\u304a\u3001\u5bfe\u5fdc\u30aa\u30da\u30a2\u30f3\u30d7\u57fa\u677f\u3084\u96fb\u6e90\u57fa\u677f\u3082\u9812\u5e03\u53ef\u80fd\u3067\u3059\u3002
\u305d\u308c\u305e\u308c\u306e\u751f\u57fa\u677f\u306f1\u679a500JPY\u3001\u30aa\u30da\u30a2\u30f3\u30d7\u57fa\u677f\u5b8c\u6210\u54c1\u306f1\u679a15,000JPY\u3001\u96fb\u6e90\u57fa\u677f\u5b8c\u6210\u54c1\u306f1\u679a3,000JPY\u3067\u3059\u3002
\u3053\u308c\u3089\u3082\u5b8c\u6210\u54c1\u306f\u624b\u534a\u7530\u5b9f\u88c5\u3068\u306a\u308a\u307e\u3059\u306e\u3067\u30012\uff643\u65e5\u7d0d\u671f\u3092\u3044\u305f\u3060\u304f\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Since additional ALTERA CPLDs are hopelessly unavailable, only 6 DSD discrete DACs will be distributed.XILINX … ““DSD discrete analog FIR filter DAC”Distribution Details(\u9812\u5e03\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066)” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,11],"tags":[],"class_list":["post-1730","post","type-post","status-publish","format-standard","hentry","category-distribution","category-hardware-debug"],"_links":{"self":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1730","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1730"}],"version-history":[{"count":8,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1730\/revisions"}],"predecessor-version":[{"id":1742,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/1730\/revisions\/1742"}],"wp:attachment":[{"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1730"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/fpga.cool.coocan.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}