{"id":2483,"date":"2026-05-21T01:19:49","date_gmt":"2026-05-21T01:19:49","guid":{"rendered":"https:\/\/materialparts.com\/opa2277ua-2k5\/"},"modified":"2026-05-21T01:19:49","modified_gmt":"2026-05-21T01:19:49","slug":"opa2277ua-2k5","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/opa2277ua-2k5\/","title":{"rendered":"OPA2277UA\/2K5"},"content":{"rendered":"

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

The OPA2277UA\/2K5 from Texas Instruments is a dual-channel high-precision, low-power operational amplifier with 10uV offset voltage, 0.1uV\/C drift, 140dB CMRR, 1MHz GBW, and +-2V to +-18V supply range in an 8-pin SOIC package on tape and reel.<\/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
\u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629<\/td>\n\u062a\u0643\u0633\u0627\u0633 \u0625\u0646\u0633\u062a\u0631\u0648\u0645\u0646\u062a\u0633<\/td>\n<\/tr>\n
\u0639\u062f\u062f \u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n2 (Dual)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u062f\u062e\u0644\u0627\u062a<\/td>\n10uV typical, 20uV max<\/td>\n<\/tr>\n
Offset Drift<\/td>\n+-0.1uV\/C<\/td>\n<\/tr>\n
Gain Bandwidth Product<\/td>\n1MHz<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u062f\u0648\u0631\u0627\u0646<\/td>\n0.8V\/us<\/td>\n<\/tr>\n
CMRRR<\/td>\n140dB<\/td>\n<\/tr>\n
PSRRR<\/td>\n130dB<\/td>\n<\/tr>\n
Open-Loop Gain<\/td>\n134dB<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u062a\u062d\u064a\u0632 \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n1nA max<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n+-2V to +-18V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n800uA\/amplifier<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n8-SOIC (4.9 x 3.9mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low offset voltage: 10uV<\/li>\n
  • Ultra-low drift: +-0.1uV\/C<\/li>\n
  • High open-loop gain: 134dB<\/li>\n
  • High CMRR: 140dB<\/li>\n
  • High PSRR: 130dB<\/li>\n
  • Low bias current: 1nA max<\/li>\n
  • Wide supply range: +-2V to +-18V<\/li>\n
  • Low quiescent current: 800uA\/amplifier<\/li>\n
  • Replaces OP-07, OP-77, OP-177<\/li>\n
  • Unity-gain stable<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Precision instrumentation and measurement<\/li>\n
    • Medical equipment<\/li>\n
    • Industrial process control<\/li>\n
    • Weigh scale and strain gauge amplifiers<\/li>\n
    • Data acquisition systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The OPA2277UA\/2K5 from Texas Instruments is a dual-channel high-precision, low-power operational amplifier with 10uV offset voltage, 0.1uV\/C drift, 140dB CMRR, 1MHz GBW, and +-2V to +-18V supply range in an 8-pin SOIC package on tape and reel. Key Specifications Manufacturer Texas Instruments Number of Channels 2 (Dual) Input Offset Voltage 10uV typical, 20uV […]<\/p>\n","protected":false},"author":2,"featured_media":2768,"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-2483","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Dual precision op-amp, 10uV Vos, 0.1uV\/C drift, 140dB CMRR, 1MHz GBW, SOIC-8","date_code":"","package_case":"8-SOIC (4.9 x 3.9 x 1.75mm)","in_stock":8500,"datasheet":"https:\/\/www.ti.com\/product\/OPA2277","price":"$2.71 @ 1ku","product_introduction":"The Texas Instruments OPA2277UA\/2K5 is a dual-channel precision operational amplifier that replaces the industry-standard OP-177. The OPAx277 series offers improved noise performance, wider output voltage swing, and twice the speed with half the quiescent current of its predecessors. With ultra-low offset voltage of 10uV and drift of +-0.1uV\/C, the device ensures accuracy in precision applications. The 140dB CMRR and 130dB PSRR provide excellent rejection of power supply and common-mode interference. The device operates from +-2V to +-18V supplies with 800uA\/amplifier quiescent current. Dual channels feature completely independent circuitry for lowest crosstalk.","working_principle":"The OPA2277UA\/2K5 operates as a precision voltage-feedback operational amplifier with three key design elements: 1) Input Stage: A super-beta bipolar input pair with laser-trimmed offset resistors achieves 10uV typical offset voltage and 1nA max bias current. The balanced input architecture provides 140dB CMRR. 2) Gain Stage: The high-gain internal voltage amplifier provides 134dB open-loop gain, ensuring minimal gain error in closed-loop configurations. The internal compensation network ensures unity-gain stability with capacitive loads. 3) Output Stage: A Class AB output stage swings within 1V of the supply rails (RL=10kOhm) with 0.8V\/us slew rate and 1MHz gain-bandwidth product. The dual channels use independent circuitry to prevent crosstalk even during overload conditions.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>1OUT<\/td>Output<\/td>Channel A output<\/td><\/tr>
      2<\/td>1IN-<\/td>Input<\/td>Channel A inverting input<\/td><\/tr>
      3<\/td>1IN+<\/td>Input<\/td>Channel A non-inverting input<\/td><\/tr>
      4<\/td>V-<\/td>Power<\/td>Negative supply<\/td><\/tr>
      5<\/td>2IN+<\/td>Input<\/td>Channel B non-inverting input<\/td><\/tr>
      6<\/td>2IN-<\/td>Input<\/td>Channel B inverting input<\/td><\/tr>
      7<\/td>2OUT<\/td>Output<\/td>Channel B output<\/td><\/tr>
      8<\/td>V+<\/td>Power<\/td>Positive supply<\/td><\/tr><\/table>","application_scenarios":"
      • Precision weigh scale and strain gauge signal conditioning<\/li>
      • Medical instrumentation (ECG, EEG amplifiers)<\/li>
      • Industrial 4-20mA transmitter signal chains<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>OPA277UA\/2K5<\/td>SOIC-8<\/td>Single channel version<\/td><\/tr>
        TI<\/td>OPA4277UA<\/td>SOIC-14<\/td>Quad channel version<\/td><\/tr>
        ADI<\/td>OP07ARZ<\/td>SOIC-8<\/td>Legacy precision op-amp<\/td><\/tr>
        TI<\/td>OPA2206AIDR<\/td>SOIC-8<\/td>+-40V overvoltage protected<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2483","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=2483"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2483\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media\/2768"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2483"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2483"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2483"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}