{"id":10646,"date":"2026-07-20T09:17:07","date_gmt":"2026-07-20T09:17:07","guid":{"rendered":"https:\/\/ic-vendor.com\/ref3440idbvr\/"},"modified":"2026-07-20T09:17:07","modified_gmt":"2026-07-20T09:17:07","slug":"ref3440idbvr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/ref3440idbvr\/","title":{"rendered":"REF3440IDBVR"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The REF3440IDBVR is a precision 4.096V voltage reference from Texas Instruments with 0.05% initial accuracy and low temperature drift of 6 ppm\/\u00b0C (typical). It features an ultra-low IQ of 95\u03bcA and can source up to 10mA. Packaged in a 6-pin SOT-23 (DBV) package, it is designed for precision measurement and data acquisition applications.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\nPrecision Voltage Reference<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n4.096V<\/td>\n<\/tr>\n
Initial Accuracy<\/td>\n\u00b10.05% (max)<\/td>\n<\/tr>\n
Temperature Drift<\/td>\n6 ppm\/\u00b0C (typ), 15 ppm\/\u00b0C (max)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n\u00b110mA<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n95\u03bcA (typical)<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n4.296V to 12V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n6-pin SOT-23 (2.9 \u00d7 1.6 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • High initial accuracy of \u00b10.05% maximum<\/li>\n
  • Low temperature drift of 6 ppm\/\u00b0C typical<\/li>\n
  • Ultra-low IQ of 95\u03bcA typical<\/li>\n
  • Output can source and sink up to 10mA<\/li>\n
  • No external capacitor required for stability<\/li>\n
  • Small SOT-23-6 footprint<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Precision data acquisition systems<\/li>\n
    • ADC and DAC reference voltage<\/li>\n
    • Medical instrumentation<\/li>\n
    • Industrial process control<\/li>\n
    • Portable test and measurement equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The REF3440IDBVR is a precision 4.096V voltage reference from Texas Instruments with 0.05% initial accuracy and low temperature drift of 6 ppm\/\u00b0C (typical). It features an ultra-low IQ of 95\u03bcA and can source up to 10mA. Packaged in a 6-pin SOT-23 (DBV) package, it is designed for precision measurement and data acquisition applications. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[1987],"chip_brand":[138],"class_list":["post-10646","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-ref3440idbvr","chip_brand-ti"],"acf":{"brief_explanation":"4.096V precision voltage reference, \u00b10.05%, 6ppm\/\u00b0C, 95\u03bcA IQ, SOT-23-6","date_code":"","package_case":"SOT-23-6 (2.9 \u00d7 1.6 \u00d7 1.0 mm)","in_stock":8940,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ref3440.pdf","price":"$0.78 @ 1ku","product_introduction":"The REF3440 is a precision voltage reference from Texas Instruments that provides a stable 4.096V output with \u00b10.05% initial accuracy and 6 ppm\/\u00b0C typical temperature drift. The device consumes only 95\u03bcA of quiescent current, making it suitable for battery-powered precision systems. Its ability to both source and sink up to 10mA allows it to drive dynamic loads such as ADC reference inputs without external buffering. The REF3440 requires no external capacitor for stability, simplifying PCB layout and reducing BOM count in space-constrained designs.","working_principle":"The REF3440 uses a bandgap-based voltage reference core with curvature correction to achieve low temperature drift. The core bandgap voltage is amplified and trimmed to produce the precise 4.096V output. Laser trimming at the factory ensures the \u00b10.05% initial accuracy specification. The output stage uses a class-AB buffer that can both source and sink current, maintaining output impedance below 0.1\u03a9 at DC. A sleep mode (via EN pin) reduces the quiescent current to microamps when the reference is not needed. The device is stable without an output capacitor due to the internally compensated output buffer, although an external capacitor can improve noise performance and load transient response.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>EN<\/td>Input<\/td>Enable \u2014 high enables the output<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      3<\/td>VIN<\/td>Power<\/td>Input supply voltage (4.296-12V)<\/td><\/tr>
      4<\/td>NC<\/td>\u2014<\/td>No connect<\/td><\/tr>
      5<\/td>NC<\/td>\u2014<\/td>No connect<\/td><\/tr>
      6<\/td>VOUT<\/td>Output<\/td>Reference output (4.096V)<\/td><\/tr><\/table>","application_scenarios":"
      • Reference voltage for 16-bit ADCs in data acquisition modules<\/li>
      • DAC reference for precision waveform generators<\/li>
      • Voltage calibration standard in portable test equipment<\/li>
      • Thermocouple cold junction compensation reference<\/li>
      • Medical device precision measurement front-end<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>REF3425IDBVR<\/td>SOT-23-6<\/td>2.5V version of same family<\/td><\/tr>
        TI<\/td>REF5040IDBVR<\/td>SOT-23-6<\/td>4.096V, 3ppm\/\u00b0C, higher grade<\/td><\/tr>
        ADI<\/td>ADR4540<\/td>SOT-23-8<\/td>4.096V, 2ppm\/\u00b0C drift<\/td><\/tr>
        Maxim<\/td>MAX6341<\/td>SOT-23-6<\/td>4.096V reference, 5ppm\/\u00b0C<\/td><\/tr>
        Microchip<\/td>MCP1541<\/td>SOT-23-6<\/td>4.096V, lower precision<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10646","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10646"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10646\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10646"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10646"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}