{"id":2942,"date":"2026-05-27T14:30:28","date_gmt":"2026-05-27T14:30:28","guid":{"rendered":"https:\/\/materialparts.com\/ref3033aidbzr\/"},"modified":"2026-05-27T14:30:28","modified_gmt":"2026-05-27T14:30:28","slug":"ref3033aidbzr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ref3033aidbzr\/","title":{"rendered":"REF3033AIDBZR"},"content":{"rendered":"

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

The REF3033AIDBZR from Texas Instruments is a 3.3V precision series voltage reference in a tiny SOT-23-3 package. It offers 0.2% initial accuracy, 75ppm\/\u00b0C max drift (-40\u00b0C to +125\u00b0C), 42\u03bcA typical quiescent current, 1mV dropout, 25mA output current, and 36\u03bcVpp noise (0.1-10Hz) for portable and loop-powered 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\n\n\n\n\n\n\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n3.3V (fixed)<\/td>\n<\/tr>\n
Initial Accuracy<\/td>\n\u00b10.2%<\/td>\n<\/tr>\n
Temperature Coefficient<\/td>\n50ppm\/\u00b0C max (0\u00b0C to 70\u00b0C), 75ppm\/\u00b0C max (-40\u00b0C to +125\u00b0C)<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n3.35V to 5.5V<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n1mV typ. (at zero load)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n25mA max.<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n42\u03bcA typ., 50\u03bcA max.<\/td>\n<\/tr>\n
Noise (0.1-10Hz)<\/td>\n36\u03bcVpp typ.<\/td>\n<\/tr>\n
Noise (10Hz-10kHz)<\/td>\n105\u03bcVrms typ.<\/td>\n<\/tr>\n
Line Regulation<\/td>\n130\u03bcV\/V typ.<\/td>\n<\/tr>\n
Load Regulation<\/td>\n100\u03bcV\/mA typ.<\/td>\n<\/tr>\n
Output Short Circuit<\/td>\nContinuous (protected)<\/td>\n<\/tr>\n
Reference Type<\/td>\nSeries (bandgap)<\/td>\n<\/tr>\n
No Load Capacitor Required<\/td>\nYes (stable without output cap)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-3 (2.92 x 1.3mm)<\/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 +125 \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
  • Micro-size SOT-23-3 package<\/li>\n
  • Ultra-low dropout: 1mV typical<\/li>\n
  • High output current: 25mA<\/li>\n
  • High initial accuracy: \u00b10.2%<\/li>\n
  • Low quiescent current: 42\u03bcA typical<\/li>\n
  • Excellent temperature drift: 50ppm\/\u00b0C (0-70\u00b0C)<\/li>\n
  • No load capacitor required for stability<\/li>\n
  • Output short-circuit protected<\/li>\n
  • 4kV HBM ESD protection<\/li>\n
  • MSL-1 (unlimited floor life)<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • 4-20mA loop-powered industrial transmitters<\/li>\n
    • ADC\/DAC voltage reference for precision measurements<\/li>\n
    • Portable and battery-powered instruments<\/li>\n
    • Intrinsically safe and explosion-proof equipment<\/li>\n
    • Power management and voltage monitoring<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The REF3033AIDBZR from Texas Instruments is a 3.3V precision series voltage reference in a tiny SOT-23-3 package. It offers 0.2% initial accuracy, 75ppm\/\u00b0C max drift (-40\u00b0C to +125\u00b0C), 42\u03bcA typical quiescent current, 1mV dropout, 25mA output current, and 36\u03bcVpp noise (0.1-10Hz) for portable and loop-powered applications. Key Specifications Output Voltage 3.3V (fixed) Initial […]<\/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":[138],"class_list":["post-2942","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"3.3V series voltage reference, 0.2% acc, 75ppm\/\u00b0C, 42\u03bcA Iq, 1mV dropout, SOT-23-3","date_code":"","package_case":"SOT-23-3 \/ DBZ (2.92 x 1.3 x 1.12mm)","in_stock":5010,"datasheet":"https:\/\/www.ti.com\/product\/REF3033","price":"$0.55 @ 1ku","product_introduction":"The REF3033AIDBZR from Texas Instruments is a 3.3V precision series voltage reference in a tiny SOT-23-3 package, offering 0.2% initial accuracy and 75ppm\/\u00b0C maximum temperature drift over the -40\u00b0C to +125\u00b0C range. With only 42\u03bcA typical quiescent current and 1mV dropout voltage, it is ideal for loop-powered and battery-powered applications. The 25mA output current capability and no-external-capacitor stability simplify PCB design. The 36\u03bcVpp low-frequency noise makes it suitable for high-resolution ADC\/DAC reference applications.","working_principle":"The REF3033 uses a CMOS bandgap voltage reference architecture. The bandgap circuit generates a stable 1.25V reference by combining the negative temperature coefficient of a forward-biased diode (VBE) with the positive temperature coefficient of two diodes operating at different current densities (\u0394VBE). These are scaled and summed to produce a near-zero temperature coefficient at the nominal bandgap voltage. An internal amplifier then scales this voltage to the 3.3V output level. The CMOS design minimizes quiescent current to 42\u03bcA while maintaining good noise performance. The series topology passes the supply current through the output, allowing very low dropout operation\u2014only 1mV above the output voltage at zero load.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OUT<\/td>Output<\/td>3.3V reference output (up to 25mA)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      3<\/td>IN<\/td>Power<\/td>Input supply (3.35V to 5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • 4-20mA pressure transmitter ADC reference with 42\u03bcA Iq budget<\/li>
      • 12-16 bit ADC\/DAC precision voltage reference in portable instruments<\/li>
      • Battery-powered data logger with 1.8V minimum supply compatibility<\/li>
      • Intrinsically safe instrument reference without output capacitor<\/li>
      • Power supply voltage monitoring threshold reference<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>REF3030AIDBZR<\/td>SOT-23-3<\/td>3.0V version, same family<\/td><\/tr>
        TI<\/td>REF3433AIDBZR<\/td>SOT-23-3<\/td>0.15% accuracy, 30ppm\/\u00b0C, 3.9\u03bcA Iq<\/td><\/tr>
        ADI<\/td>ADR3433ARJZ<\/td>SOT-23-3<\/td>0.1% accuracy, 8ppm\/\u00b0C<\/td><\/tr>
        Maxim<\/td>MAX6143ASA33+<\/td>SOIC-8<\/td>0.05% accuracy, 3ppm\/\u00b0C<\/td><\/tr>
        Microchip<\/td>MCP1501T-33E\/SN<\/td>SOT-23-6<\/td>0.1% accuracy, 40ppm\/\u00b0C<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2942","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=2942"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2942\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2942"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2942"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}