{"id":5638,"date":"2026-06-11T03:48:48","date_gmt":"2026-06-11T03:48:48","guid":{"rendered":"https:\/\/materialparts.com\/mcp3421aot-e-ch\/"},"modified":"2026-06-11T03:48:48","modified_gmt":"2026-06-11T03:48:48","slug":"mcp3421aot-e-ch","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mcp3421aot-e-ch\/","title":{"rendered":"MCP3421AOT-E\/CH"},"content":{"rendered":"

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

The MCP3421AOT-E\/CH from Microchip is an 18-bit single-channel delta-sigma ADC with I2C interface, on-board 2.048V reference, and programmable PGA (1\/2\/4\/8). Supports 12\/14\/16\/18-bit resolution with data rates from 3.7 to 240 SPS in tiny SOT-23-6.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n
Resolution<\/td>\n12\/14\/16\/18-bit<\/td>\n<\/tr>\n
\u6e20\u9053<\/td>\n1 differential<\/td>\n<\/tr>\n
\u6570\u636e\u901f\u7387<\/td>\n3.7\/15\/60\/240 SPS<\/td>\n<\/tr>\n
Interface<\/td>\nI2C<\/td>\n<\/tr>\n
Reference<\/td>\nInternal 2.048V<\/td>\n<\/tr>\n
PGA<\/td>\n1\/2\/4\/8<\/td>\n<\/tr>\n
Supply<\/td>\n2.7-5.5V<\/td>\n<\/tr>\n
Temp<\/td>\n-40~125C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 18-bit delta-sigma ADC<\/li>\n
  • On-board 2.048V reference<\/li>\n
  • Programmable PGA (1\/2\/4\/8)<\/li>\n
  • I2C interface<\/li>\n
  • Single-supply 2.7-5.5V<\/li>\n
  • Self-calibration<\/li>\n
  • Ultra-small SOT-23-6<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Precision sensor measurement<\/li>\n
    • Weight scales<\/li>\n
    • Temperature sensing<\/li>\n
    • Battery monitoring<\/li>\n
    • Portable instrumentation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MCP3421AOT-E\/CH from Microchip is an 18-bit single-channel delta-sigma ADC with I2C interface, on-board 2.048V reference, and programmable PGA (1\/2\/4\/8). Supports 12\/14\/16\/18-bit resolution with data rates from 3.7 to 240 SPS in tiny SOT-23-6. Key Specifications Resolution 12\/14\/16\/18-bit Channels 1 differential Data Rate 3.7\/15\/60\/240 SPS Interface I2C Reference Internal 2.048V PGA 1\/2\/4\/8 Supply […]<\/p>\n","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-5638","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"18-bit delta-sigma ADC, I2C, 3.7SPS, PGA, SOT-23-6","date_code":"","package_case":"SOT-23-6 (2.9x1.6mm)","in_stock":5278,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/MCP3421","price":"$1.80 @ 1ku","product_introduction":"The MCP3421AOT-E\/CH from Microchip is an 18-bit single-channel delta-sigma ADC with I2C interface, on-board 2.048V reference, and programmable PGA (1\/2\/4\/8). Supports 12\/14\/16\/18-bit resolution with data rates from 3.7 to 240 SPS in tiny SOT-23-6.","working_principle":"Delta-sigma modulator oversamples input. Digital filter decimates to configurable output resolution. PGA amplifies small signals. Internal 2.048V reference ensures stable measurement. I2C provides configuration and data readback.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>VIN+<\/td>Differential input +<\/td><\/tr>
      2<\/td>VIN-<\/td>Differential input -<\/td><\/tr>
      3<\/td>VSS<\/td>Ground<\/td><\/tr>
      4<\/td>SDA<\/td>I2C data<\/td><\/tr>
      5<\/td>SCL<\/td>I2C clock<\/td><\/tr>
      6<\/td>VDD<\/td>Supply 2.7-5.5V<\/td><\/tr><\/table>","application_scenarios":"
    • Precision sensor measurement<\/li>
    • Weight scales<\/li>
    • Temperature sensing<\/li>
    • Battery monitoring<\/li>
    • Portable instrumentation<\/li>","alternative_models":"
      Model<\/th>Brand<\/th>Diff<\/th><\/tr>
      MCP3422<\/td>Microchip<\/td>2-channel version<\/td><\/tr>
      MCP3424<\/td>Microchip<\/td>4-channel version<\/td><\/tr>
      ADS1115<\/td>TI<\/td>16-bit 4-ch ADC<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5638","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=5638"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5638\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5638"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}