{"id":5778,"date":"2026-06-11T04:41:08","date_gmt":"2026-06-11T04:41:08","guid":{"rendered":"https:\/\/materialparts.com\/mcp4921t-e-sn\/"},"modified":"2026-06-11T06:41:15","modified_gmt":"2026-06-11T06:41:15","slug":"mcp4921t-e-sn","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mcp4921t-e-sn\/","title":{"rendered":"MCP4921T-E\/SN"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The MCP4921T-E\/SN from Microchip is a 12-bit single-channel voltage-output DAC with SPI interface, rail-to-rail output, and shutdown mode in SOIC-8 for analog control.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n
\u5305\u88c5<\/td>\nSOIC-8 (4.9×3.9mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MCP4921T-E\/SN from Microchip is a 12-bit single-channel voltage-output DAC with SPI interface, rail-to-rail output, and shutdown mode in SOIC-8 for analog control. Key Specifications Package SOIC-8 (4.9×3.9mm) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Power management<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[134],"class_list":["post-5778","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"12-bit DAC, SPI, Vout, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9x3.9mm)","in_stock":6808,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/MCP4921","price":"$1.50 @ 1ku","product_introduction":"The MCP4921T-E\/SN from Microchip is a 12-bit single-channel voltage-output DAC with SPI interface, rail-to-rail output, and shutdown mode in SOIC-8 for analog control.","working_principle":"The MCP4921T-E\/SN is a 12-bit voltage-output DAC with SPI interface in SOIC-8. The DAC uses a R-2R resistor ladder network where each bit of the 12-bit digital code connects a 2R resistor to either VREF or AVSS through CMOS switches. The output voltage is VOUT = (D\/4096) x VREF, where D is the 12-bit digital code (0-4095). The SPI write sequence: 1) CS goes LOW, 2) 16-bit word is clocked in MSB-first on SDI (4 config bits + 12 data bits), 3) CS goes HIGH to transfer data to the input register. The LDAC pin then transfers the input register to the DAC register, updating the output. This double-buffered architecture allows synchronous updates when multiple MCP4921 devices share the SPI bus. The output amplifier has rail-to-rail output capability and can drive 5kOhm\/50pF loads. Settling time to +\/-0.5 LSB is 4.5us.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>Supply (2.7-5.5V)<\/td><\/tr>
      2<\/td>CS<\/td>Input<\/td>SPI chip select (active low)<\/td><\/tr>
      3<\/td>SCK<\/td>Input<\/td>SPI clock<\/td><\/tr>
      4<\/td>SDI<\/td>Input<\/td>SPI data input<\/td><\/tr>
      5<\/td>LDAC<\/td>Input<\/td>DAC latch update (active low)<\/td><\/tr>
      6<\/td>VOUT<\/td>Output<\/td>Analog voltage output<\/td><\/tr>
      7<\/td>AVSS<\/td>Power<\/td>Analog ground<\/td><\/tr>
      8<\/td>VREF<\/td>Analog Input<\/td>Reference voltage input<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Power management<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Microchip<\/td>MCP4922T-E\/SN<\/td>SOIC-14<\/td>Dual 12-bit DAC version<\/td><\/tr>
      Microchip<\/td>MCP4811-E\/SN<\/td>SOIC-8<\/td>10-bit, internal 2.048V ref<\/td><\/tr>
      Texas Instruments<\/td>DAC7611U\/2K5<\/td>SOIC-8<\/td>12-bit, 100ksps, 2.7-5.5V<\/td><\/tr>
      Maxim<\/td>MAX531BCPA+<\/td>DIP-8<\/td>12-bit DAC, +5V supply<\/td><\/tr>
      Analog Devices<\/td>AD5620BRJZ-1REEL7<\/td>SOT-23-8<\/td>12-bit, internal 2.5V ref<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=5778"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5778\/revisions"}],"predecessor-version":[{"id":5928,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5778\/revisions\/5928"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5778"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5778"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}