{"id":6233,"date":"2026-06-12T09:42:02","date_gmt":"2026-06-12T09:42:02","guid":{"rendered":"https:\/\/materialparts.com\/lm2903avqdr\/"},"modified":"2026-06-12T09:42:02","modified_gmt":"2026-06-12T09:42:02","slug":"lm2903avqdr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm2903avqdr\/","title":{"rendered":"LM2903AVQDR"},"content":{"rendered":"

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

The LM2903AVQDR from Texas Instruments is an automotive-qualified dual differential comparator in an 8-pin SOIC package. It features AEC-Q100 Grade 1 qualification with extended operating temperature range of -40\u00b0C to +125\u00b0C, low input offset voltage of 2mV (A-grade), and open-collector output compatible with TTL, MOS, and CMOS logic levels.<\/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
Number of Comparators<\/td>\n2<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n2V to 32V<\/td>\n<\/tr>\n
Input Offset Voltage (A-grade)<\/td>\n2mV max at 25\u00b0C<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u062a\u062d\u064a\u0632 \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n250nA max<\/td>\n<\/tr>\n
Response Time<\/td>\n1.3\u03bcs (typical)<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\nOpen-collector<\/td>\n<\/tr>\n
Supply Current<\/td>\n1mA per comparator (typical)<\/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
\u0627\u0644\u0645\u0624\u0647\u0644\u0627\u062a<\/td>\nAEC-Q100 Grade 1<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 (D)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • AEC-Q100 Grade 1 qualified for automotive applications<\/li>\n
  • Low input offset voltage: 2mV (A-grade, 25\u00b0C)<\/li>\n
  • Common-mode input voltage range includes ground<\/li>\n
  • Differential input voltage equal to maximum supply rating<\/li>\n
  • Open-collector output for wired-OR configurations<\/li>\n
  • Low supply current independent of supply voltage<\/li>\n
  • Single or dual supply operation<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Automotive body control modules<\/li>\n
    • Battery management systems<\/li>\n
    • Motor drive current sensing<\/li>\n
    • Window comparators for over\/under voltage detection<\/li>\n
    • HEV\/EV powertrain control<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM2903AVQDR from Texas Instruments is an automotive-qualified dual differential comparator in an 8-pin SOIC package. It features AEC-Q100 Grade 1 qualification with extended operating temperature range of -40\u00b0C to +125\u00b0C, low input offset voltage of 2mV (A-grade), and open-collector output compatible with TTL, MOS, and CMOS logic levels. Key Specifications Number of […]<\/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-6233","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Automotive dual differential comparator, AEC-Q100 Grade 1, 2-32V supply, 2mV offset (A-grade), SOIC-8, -40\u00b0C to +125\u00b0C","date_code":"","package_case":"SOIC-8 (D) 4.90mm x 3.91mm","in_stock":6000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm2903.pdf","price":"$0.51 @ 1ku","product_introduction":"The LM2903AVQDR is a dual differential comparator from Texas Instruments qualified to AEC-Q100 Grade 1 standards for automotive applications. It consists of two independent voltage comparators designed to operate from a single power supply over a wide range of voltages from 2V to 32V. The A-grade device features a maximum input offset voltage of 2mV at 25\u00b0C, providing improved accuracy for precision threshold detection. The open-collector output configuration allows wired-OR connections for multi-channel monitoring. The device maintains stable performance across the full automotive temperature range of -40\u00b0C to +125\u00b0C, making it suitable for under-hood and cabin electronics.","working_principle":"The LM2903AVQDR consists of two independent comparators, each comparing two input voltages and producing an output that indicates which input is larger. The non-inverting input (+) is compared against the inverting input (-). When the voltage at the non-inverting input exceeds the inverting input, the internal output transistor turns off (open-collector), allowing an external pull-up resistor to pull the output high. Conversely, when the inverting input is higher, the output transistor turns on, pulling the output low. The open-collector architecture enables wired-OR connections where multiple comparator outputs share a single pull-up resistor, creating an OR logic function for multi-threshold monitoring without additional logic gates.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>1OUT<\/td>Output of comparator 1 (open-collector)<\/td><\/tr>
      2<\/td>1IN-<\/td>Inverting input of comparator 1<\/td><\/tr>
      3<\/td>1IN+<\/td>Non-inverting input of comparator 1<\/td><\/tr>
      4<\/td>GND<\/td>Ground (negative supply)<\/td><\/tr>
      5<\/td>2IN+<\/td>Non-inverting input of comparator 2<\/td><\/tr>
      6<\/td>2IN-<\/td>Inverting input of comparator 2<\/td><\/tr>
      7<\/td>2OUT<\/td>Output of comparator 2 (open-collector)<\/td><\/tr>
      8<\/td>VCC<\/td>Positive supply voltage (2V to 32V)<\/td><\/tr><\/table>","application_scenarios":"
      • Battery Management<\/b>: Monitors cell voltage against overcharge\/over-discharge thresholds in automotive battery packs<\/li>
      • Motor Drive Protection<\/b>: Detects overcurrent conditions by comparing current-sense voltage against reference threshold<\/li>
      • Window Comparator<\/b>: Both comparators form over\/under voltage window detector for power supply supervision<\/li>
      • Automotive Body Control<\/b>: Senses switch states and signal thresholds in lighting, wiper, and door control modules<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Offset<\/th>Qualification<\/th>Package<\/th><\/tr>
        LM2903AVQDRG4Q1<\/td>Texas Instruments<\/td>2mV<\/td>AEC-Q100<\/td>SOIC-8<\/td><\/tr>
        LM2903BQDRQ1<\/td>Texas Instruments<\/td>0.37mV<\/td>AEC-Q100<\/td>SOIC-8<\/td><\/tr>
        LM393DT<\/td>STMicroelectronics<\/td>5mV<\/td>Industrial<\/td>SOIC-8<\/td><\/tr>
        NCV2903DR2G<\/td>onsemi<\/td>5mV<\/td>AEC-Q100<\/td>SOIC-8<\/td><\/tr>
        TLC393CDR<\/td>Texas Instruments<\/td>5mV<\/td>Industrial<\/td>SOIC-8<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6233","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=6233"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6233\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6233"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6233"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}