{"id":3553,"date":"2026-06-06T10:25:51","date_gmt":"2026-06-06T10:25:51","guid":{"rendered":"https:\/\/materialparts.com\/opa4277ua\/"},"modified":"2026-06-06T10:25:51","modified_gmt":"2026-06-06T10:25:51","slug":"opa4277ua","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/opa4277ua\/","title":{"rendered":"OPA4277UA"},"content":{"rendered":"

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

The OPA4277UA from Texas Instruments is a quad-channel ultra-low offset precision operational amplifier. With 10 uV max offset voltage, 0.1 uV\/C drift, 140 dB CMRR, and 134 dB open-loop gain, it replaces industry-standard OP-07\/OP-77\/OP-177 with improved performance. Operating from \u00b12V to \u00b118V supplies at 800 uA per channel, it comes in a 14-pin SOIC package.<\/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
\u0627\u0644\u0646\u0648\u0639<\/td>\nQuad Precision Op Amp<\/td>\n<\/tr>\n
\u0627\u0644\u0642\u0646\u0648\u0627\u062a<\/td>\n4<\/td>\n<\/tr>\n
Vos (max)<\/td>\n10 uV (A grade)<\/td>\n<\/tr>\n
Offset Drift<\/td>\n0.1 uV\/C (typ)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n\u00b12V to \u00b118V<\/td>\n<\/tr>\n
Iq per Channel<\/td>\n800 uA (typ)<\/td>\n<\/tr>\n
GBW<\/td>\n1 MHz<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u062f\u0648\u0631\u0627\u0646<\/td>\n0.8 V\/us<\/td>\n<\/tr>\n
CMRRR<\/td>\n140 dB (typ)<\/td>\n<\/tr>\n
Open-Loop Gain<\/td>\n134 dB (typ)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-14<\/td>\n<\/tr>\n
Operating Temp<\/td>\n-40 to 85 C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Ultra-low offset voltage: 10 uV max (A grade)<\/li>\n
  • Ultra-low drift: \u00b10.1 uV\/C typical<\/li>\n
  • 140 dB common-mode rejection ratio<\/li>\n
  • 134 dB open-loop gain<\/li>\n
  • 1 nA max input bias current<\/li>\n
  • Replaces OP-07, OP-77, OP-177 with improved specs<\/li>\n
  • Wide supply range: \u00b12V to \u00b118V<\/li>\n
  • 800 uA per channel quiescent current<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Precision instrumentation amplifiers<\/li>\n
    • Medical monitoring and diagnostic equipment<\/li>\n
    • Industrial process control transmitters<\/li>\n
    • Data acquisition systems<\/li>\n
    • Precision filters and integrators<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The OPA4277UA from Texas Instruments is a quad-channel ultra-low offset precision operational amplifier. With 10 uV max offset voltage, 0.1 uV\/C drift, 140 dB CMRR, and 134 dB open-loop gain, it replaces industry-standard OP-07\/OP-77\/OP-177 with improved performance. Operating from \u00b12V to \u00b118V supplies at 800 uA per channel, it comes in a 14-pin […]<\/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-3553","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, 10uV Vos, 0.1uV\/C drift, 140dB CMRR, SOIC-14","date_code":"","package_case":"SOIC-14 (8.65 x 6.00 x 1.58 mm)","in_stock":11118,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/opa277.pdf","price":"$4.50 @ 1ku","product_introduction":"The OPA4277UA from Texas Instruments is a quad-channel precision operational amplifier that replaces industry-standard OP-07, OP-77, and OP-177 devices with significantly improved performance. It features ultra-low 10 uV max input offset voltage, 0.1 uV\/C typical offset drift, 140 dB CMRR, and 134 dB open-loop gain. The device operates from \u00b12V to \u00b118V supplies with only 800 uA quiescent current per channel, offering twice the bandwidth and slew rate of OP-07 at half the quiescent current. The 1 nA maximum input bias current and 8 nV\/sqrtHz noise density make it ideal for precision low-frequency applications.","working_principle":"The OPA4277UA uses a bipolar-input differential pair with e-trim technology, which trims the input offset voltage during final test using polyfuse or laser trimming. The four independent amplifiers share only the supply pins, providing complete channel-to-channel isolation. The high 134 dB open-loop gain is achieved through a two-stage topology with active load. The 140 dB CMRR results from tightly matched input transistor pairs. Each channel's 800 uA quiescent current powers the input pair, gain stages, and output driver. The output stage uses a Class AB topology capable of driving 600 Ohm loads with low crossover distortion.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>1OUT<\/td>Output<\/td>Channel 1 output<\/td><\/tr>
      2<\/td>1IN-<\/td>Input<\/td>Channel 1 inverting input<\/td><\/tr>
      3<\/td>1IN+<\/td>Input<\/td>Channel 1 non-inverting input<\/td><\/tr>
      4<\/td>V+<\/td>Power<\/td>Positive supply<\/td><\/tr>
      5<\/td>2IN+<\/td>Input<\/td>Channel 2 non-inverting input<\/td><\/tr>
      6<\/td>2IN-<\/td>Input<\/td>Channel 2 inverting input<\/td><\/tr>
      7<\/td>2OUT<\/td>Output<\/td>Channel 2 output<\/td><\/tr>
      8<\/td>3OUT<\/td>Output<\/td>Channel 3 output<\/td><\/tr>
      9<\/td>3IN-<\/td>Input<\/td>Channel 3 inverting input<\/td><\/tr>
      10<\/td>3IN+<\/td>Input<\/td>Channel 3 non-inverting input<\/td><\/tr>
      11<\/td>V-<\/td>Power<\/td>Negative supply<\/td><\/tr>
      12<\/td>4IN+<\/td>Input<\/td>Channel 4 non-inverting input<\/td><\/tr>
      13<\/td>4IN-<\/td>Input<\/td>Channel 4 inverting input<\/td><\/tr>
      14<\/td>4OUT<\/td>Output<\/td>Channel 4 output<\/td><\/tr><\/table>","application_scenarios":"
      • Precision instrumentation: Multi-channel thermocouple and bridge signal conditioning<\/li>
      • Medical: ECG\/EEG front-end amplifiers requiring low offset and drift<\/li>
      • Industrial: 4-20mA transmitters with precision voltage references<\/li>
      • Data acquisition: Multi-channel differential input amplifiers<\/li>
      • Precision filters: Active filters requiring high DC accuracy<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>OPA4277U<\/td>SOIC-14<\/td>Same device, tube packaging<\/td><\/tr>
        ADI<\/td>AD704ARZ-14<\/td>SOIC-14<\/td>Quad, 100uV Vos, low Ib<\/td><\/tr>
        TI<\/td>OPA404UA<\/td>SOIC-14<\/td>Quad, FET input, 1pA Ib<\/td><\/tr>
        Microchip<\/td>MCP6V94-E\/SL<\/td>SOIC-14<\/td>Quad, zero-drift, 6V<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3553","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=3553"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3553\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3553"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3553"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}