{"id":7783,"date":"2026-06-27T03:11:48","date_gmt":"2026-06-27T03:11:48","guid":{"rendered":"https:\/\/materialparts.com\/opa4277ua-2k5\/"},"modified":"2026-06-29T09:40:35","modified_gmt":"2026-06-29T09:40:35","slug":"opa4277ua-2k5","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/opa4277ua-2k5\/","title":{"rendered":"OPA4277UA\/2K5"},"content":{"rendered":"

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

The OPA4277UA\/2K5 is a quad precision operational amplifier from Texas Instruments, featuring ultra-low offset voltage of 10 \u00b5V and ultra-low drift of \u00b10.1 \u00b5V\/\u00b0C. Housed in a 14-pin SOIC package, it replaces the industry-standard OP-177 with improved noise, wider output swing, and twice the speed at half the quiescent current.<\/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
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n\u00b12 V to \u00b118 V (4 V to 36 V)<\/td>\n<\/tr>\n
Offset Voltage (max)<\/td>\n20 \u00b5V (OPA4277UA grade)<\/td>\n<\/tr>\n
Offset Drift<\/td>\n\u00b10.1 \u00b5V\/\u00b0C (typical)<\/td>\n<\/tr>\n
Open-Loop Gain<\/td>\n134 dB (typical)<\/td>\n<\/tr>\n
CMRRR<\/td>\n140 dB (typical)<\/td>\n<\/tr>\n
PSRRR<\/td>\n130 dB (typical)<\/td>\n<\/tr>\n
Input Bias Current (max)<\/td>\n1 nA<\/td>\n<\/tr>\n
Gain Bandwidth Product<\/td>\n1 MHz<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u062f\u0648\u0631\u0627\u0646<\/td>\n0.8 V\/\u00b5s<\/td>\n<\/tr>\n
Quiescent Current per Amplifier<\/td>\n800 \u00b5A<\/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
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-14 (D)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low offset voltage: 10 \u00b5V (typical)<\/li>\n
  • Ultra-low drift: \u00b10.1 \u00b5V\/\u00b0C<\/li>\n
  • High open-loop gain: 134 dB<\/li>\n
  • High CMRR: 140 dB and PSRR: 130 dB<\/li>\n
  • Low bias current: 1 nA maximum<\/li>\n
  • Wide supply range: \u00b12 V to \u00b118 V<\/li>\n
  • Unity-gain stable, no phase inversion<\/li>\n
  • Dual and quad versions with independent circuitry<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Analog input modules<\/li>\n
    • Weigh scales and load cells<\/li>\n
    • Temperature and pressure transmitters<\/li>\n
    • Data acquisition (DAQ) systems<\/li>\n
    • Laboratory and field instrumentation<\/li>\n
    • Battery test equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The OPA4277UA\/2K5 is a quad precision operational amplifier from Texas Instruments, featuring ultra-low offset voltage of 10 \u00b5V and ultra-low drift of \u00b10.1 \u00b5V\/\u00b0C. Housed in a 14-pin SOIC package, it replaces the industry-standard OP-177 with improved noise, wider output swing, and twice the speed at half the quiescent current. Key Specifications Supply […]<\/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":[],"chip_brand":[138],"class_list":["post-7783","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Quad precision op amp, 10\u00b5V Vos, 0.1\u00b5V\/\u00b0C drift, 134dB gain, 1MHz GBW, SOIC-14","date_code":"","package_case":"SOIC-14 (8.63 x 3.85 mm)","in_stock":12477,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/opa277.pdf","price":"$5.26 @ 1ku","product_introduction":"The OPA4277 is a quad precision operational amplifier from Texas Instruments that replaces the industry-standard OP-177. It offers improved noise performance, wider output voltage swing, and is twice as fast with half the quiescent current. The device features ultra-low offset voltage (10 \u00b5V typical), ultra-low drift (\u00b10.1 \u00b5V\/\u00b0C), low bias current (1 nA max), high CMRR (140 dB), and high PSRR (130 dB). The OPA4277 operates from \u00b12 V to \u00b118 V supplies with excellent performance maintained across the full supply range. The quad version features completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.","working_principle":"The OPA4277 uses a precision bipolar input stage with laser-trimmed thin-film resistors to achieve ultra-low offset voltage and drift. The input stage provides high CMRR (140 dB) through balanced differential pair architecture with active load. The gain stage delivers 134 dB open-loop gain through a high-impedance node with active current mirror load. The output stage is a class-AB push-pull configuration that swings within 1 V of the supply rails without phase inversion. Internal compensation ensures unity-gain stability while maintaining 1 MHz GBW and 0.8 V\/\u00b5s slew rate. The quad version uses four completely independent amplifier channels sharing only supply connections to minimize crosstalk.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>\n
      1<\/td>Out A<\/td>Output<\/td>Channel A output<\/td><\/tr>\n
      2<\/td>-In A<\/td>Input<\/td>Channel A inverting input<\/td><\/tr>\n
      3<\/td>+In A<\/td>Input<\/td>Channel A non-inverting input<\/td><\/tr>\n
      4<\/td>V+<\/td>Power<\/td>Positive supply<\/td><\/tr>\n
      5<\/td>+In B<\/td>Input<\/td>Channel B non-inverting input<\/td><\/tr>\n
      6<\/td>-In B<\/td>Input<\/td>Channel B inverting input<\/td><\/tr>\n
      7<\/td>Out B<\/td>Output<\/td>Channel B output<\/td><\/tr>\n
      8<\/td>Out C<\/td>Output<\/td>Channel C output<\/td><\/tr>\n
      9<\/td>-In C<\/td>Input<\/td>Channel C inverting input<\/td><\/tr>\n
      10<\/td>+In C<\/td>Input<\/td>Channel C non-inverting input<\/td><\/tr>\n
      11<\/td>V-<\/td>Power<\/td>Negative supply<\/td><\/tr>\n
      12<\/td>+In D<\/td>Input<\/td>Channel D non-inverting input<\/td><\/tr>\n
      13<\/td>-In D<\/td>Input<\/td>Channel D inverting input<\/td><\/tr>\n
      14<\/td>Out D<\/td>Output<\/td>Channel D output<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Precision Instrumentation:<\/strong> Analog input modules for industrial measurement requiring ultra-low offset and drift<\/li>\n
      • Weigh Scales:<\/strong> Load cell signal conditioning with 134 dB open-loop gain for microvolt-level resolution<\/li>\n
      • Temperature Transmitters:<\/strong> RTD and thermocouple front-end amplification with 0.1 \u00b5V\/\u00b0C drift stability<\/li>\n
      • Data Acquisition:<\/strong> Multi-channel DAQ systems leveraging four independent precision amplifiers<\/li>\n
      • Laboratory Equipment:<\/strong> High-accuracy test and measurement instruments replacing OP-07\/OP-177<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Specs<\/th><\/tr>\n
        OPA4277PA<\/td>TI<\/td>PDIP-14 package version<\/td>-<\/td>-<\/td><\/tr>\n
        OPA4227UA<\/td>TI<\/td>Higher speed, lower noise version<\/td>-<\/td>-<\/td><\/tr>\n
        OP2206UA<\/td>TI<\/td>\u00b140V overvoltage protected version<\/td>-<\/td>-<\/td><\/tr>\n
        AD704BRZ<\/td>ADI<\/td>Quad precision, 16V supply, low Ib<\/td>-<\/td>-<\/td><\/tr>\n
        MCP6H04-E\/SN<\/td>Microchip<\/td>Quad precision, rail-to-rail<\/td>-<\/td>-<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7783","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=7783"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7783\/revisions"}],"predecessor-version":[{"id":8340,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7783\/revisions\/8340"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7783"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7783"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}