{"id":5573,"date":"2026-06-11T02:52:38","date_gmt":"2026-06-11T02:52:38","guid":{"rendered":"https:\/\/materialparts.com\/max31855kasa-2\/"},"modified":"2026-06-12T09:11:08","modified_gmt":"2026-06-12T09:11:08","slug":"max31855kasa-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/max31855kasa-2\/","title":{"rendered":"MAX31855KASA"},"content":{"rendered":"

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The MAX31855KASA from Maxim Integrated (now ADI) is a K-type thermocouple-to-digital converter with 14-bit resolution and cold-junction compensation in SOIC-8 for temperature measurement.<\/p>\n

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\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 (150mil)<\/td>\n<\/tr>\n<\/table>\n

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

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      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Automotive electronics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MAX31855KASA from Maxim Integrated (now ADI) is a K-type thermocouple-to-digital converter with 14-bit resolution and cold-junction compensation in SOIC-8 for temperature measurement. Key Specifications Package SOIC-8 (150mil) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Automotive electronics<\/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":[13,42],"tags":[],"chip_brand":[259],"class_list":["post-5573","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-sensors","chip_brand-maxim"],"acf":{"brief_explanation":"Thermocouple-to-digital converter, K-type, 14-bit, SOIC-8","date_code":"","package_case":"SOIC-8 (150mil)","in_stock":4615,"datasheet":"https:\/\/www.analog.com\/en\/products\/max31855.html","price":"$6.50 @ 1ku","product_introduction":"The MAX31855KASA from Maxim Integrated (now ADI) is a K-type thermocouple-to-digital converter with 14-bit resolution and cold-junction compensation in SOIC-8 for temperature measurement.","working_principle":"The MAX31855KASA is a K-type thermocouple-to-digital converter from Maxim Integrated in SOIC-8, providing a 14-bit signed thermocouple temperature reading and a 12-bit internal cold-junction compensation (CJC) temperature. The device performs two measurements simultaneously: (1) The thermocouple voltage (the Seebeck voltage generated by the temperature difference between the hot junction and the cold junction) is amplified and digitized by a delta-sigma ADC to 14-bit resolution (0.25C per LSB), covering -270C to +1800C with +\/-2C accuracy from -200C to +700C; (2) The internal die temperature (cold junction) is measured by an on-chip diode sensor to 12-bit resolution (0.0625C per LSB), covering -55C to +125C with +\/-3C accuracy. The SPI interface outputs a 32-bit data frame: bits D31-D18 contain the thermocouple temperature, D15-D4 contain the cold-junction temperature, and D0-D2 contain fault flags (open thermocouple, short to GND, short to VCC). The cold-junction compensation is performed by the host: the actual hot-junction temperature = thermocouple reading + CJC reading (since the thermocouple voltage only represents the temperature difference). The device automatically detects open thermocouple (broken wire) and sets the D16 fault bit. The input impedance on T+\/T- is 1M-ohm minimum, compatible with ungrounded thermocouple probes. The conversion time is 100ms (both channels), and the SPI frame is updated continuously while CS is HIGH. The -KASA suffix specifies K-type, SOIC-8. Applications include: industrial temperature monitoring, 3D printer hotend control, and oven temperature measurement.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      2<\/td>T-<\/td>Analog<\/td>Thermocouple negative input (connects to K-type thermocouple negative wire)<\/td><\/tr>
      3<\/td>T+<\/td>Analog<\/td>Thermocouple positive input (connects to K-type thermocouple positive wire)<\/td><\/tr>
      4<\/td>VCC<\/td>Power<\/td>Supply (3.0-3.6V, typical 3.3V)<\/td><\/tr>
      5<\/td>SCK<\/td>Input<\/td>SPI clock (up to 5MHz, shifts out 32-bit data frame)<\/td><\/tr>
      6<\/td>CS<\/td>Input<\/td>Chip select (active LOW, LOW=shift out data, HIGH=begin new conversion)<\/td><\/tr>
      7<\/td>SO<\/td>Output<\/td>SPI data output (14-bit thermocouple + 12-bit cold junction data)<\/td><\/tr>
      8<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Automotive electronics<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Maxim<\/td>MAX31855KASA<\/td>SOIC-8<\/td>Same device, Maxim brand<\/td><\/tr>
      Maxim<\/td>MAX31855JASA<\/td>SOIC-8<\/td>J-type thermocouple version<\/td><\/tr>
      Maxim<\/td>MAX31855TASA<\/td>SOIC-8<\/td>T-type thermocouple version<\/td><\/tr>
      Maxim<\/td>MAX31856MUD+<\/td>TSSOP-14<\/td>Universal thermocouple, SPI, cold junction, fault detect<\/td><\/tr>
      Texas Instruments<\/td>TMP6131DYAR<\/td>VSSOP-8<\/td>Thermocouple AFE, 24-bit, TI brand<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5573","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=5573"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5573\/revisions"}],"predecessor-version":[{"id":6157,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5573\/revisions\/6157"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5573"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5573"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}