{"id":9001,"date":"2026-07-02T02:35:53","date_gmt":"2026-07-02T02:35:53","guid":{"rendered":"https:\/\/materialparts.com\/mc1458dr\/"},"modified":"2026-07-03T08:02:28","modified_gmt":"2026-07-03T08:02:28","slug":"mc1458dr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mc1458dr\/","title":{"rendered":"MC1458DR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The MC1458DR is an onsemi\/TI dual general-purpose bipolar operational amplifier with each half electrically similar to the uA741. It features 1MHz GBW, 0.5V\/us slew rate, +\/-12V common-mode range, internal frequency compensation, and short-circuit protection. Packaged in 8-SOIC, 0C to +70C.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u6e20\u9053<\/td>\n2<\/td>\n<\/tr>\n
GBW<\/td>\n1 MHz<\/td>\n<\/tr>\n
\u538b\u6446\u7387<\/td>\n0.5 V\/us<\/td>\n<\/tr>\n
Vos (max)<\/td>\n6 mV<\/td>\n<\/tr>\n
Ib (max)<\/td>\n500 nA<\/td>\n<\/tr>\n
\u4f9b\u5e94\u8303\u56f4<\/td>\n+\/-5V to +\/-15V<\/td>\n<\/tr>\n
Supply Current<\/td>\n3.4 mA typ (both)<\/td>\n<\/tr>\n
Output Swing<\/td>\n+\/-12V min (RL=10k)<\/td>\n<\/tr>\n
CMRR<\/td>\n90 dB typ<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n8-SOIC<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Dual op amp, each half similar to uA741<\/li>\n
  • Internal frequency compensation (no external caps)<\/li>\n
  • Short-circuit protected outputs<\/li>\n
  • Wide common-mode and differential voltage range<\/li>\n
  • No latch-up<\/li>\n
  • Low power consumption<\/li>\n
  • 120 dB crosstalk attenuation between channels<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Audio preamplifiers and mixers<\/li>\n
    • Instrumentation and signal conditioning<\/li>\n
    • Active filters and integrators<\/li>\n
    • Control systems and servo loops<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MC1458DR is an onsemi\/TI dual general-purpose bipolar operational amplifier with each half electrically similar to the uA741. It features 1MHz GBW, 0.5V\/us slew rate, +\/-12V common-mode range, internal frequency compensation, and short-circuit protection. Packaged in 8-SOIC, 0C to +70C. Key Specifications Channels 2 GBW 1 MHz Slew Rate 0.5 V\/us Vos (max) […]<\/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":[630],"chip_brand":[182],"class_list":["post-9001","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","tag-mc1458dr","chip_brand-onsemi"],"acf":{"brief_explanation":"Dual general-purpose op amp, \u03bcA741 equivalent per channel, \u00b115V, 8-SOIC","date_code":"","package_case":"8-Pin SOIC (4.9 x 3.9 x 1.5 mm)","in_stock":7988,"datasheet":"https:\/\/www.onsemi.com\/pdf\/datasheet\/mc1458-d.pdf","price":"$0.32 @ 1ku","product_introduction":"The MC1458DR is an onsemi dual general-purpose operational amplifier in an 8-SOIC package, providing two independent op-amp channels with electrical characteristics equivalent to the industry-standard \u03bcA741. Each channel features a 1 MHz gain-bandwidth product and 0.5 V\/\u03bcs slew rate, suitable for a wide range of analog signal conditioning applications. The device operates from dual supplies up to \u00b115V with internal frequency compensation, requiring no external components for stability in unity-gain configurations. The output stage provides short-circuit protection, limiting output current to approximately \u00b125 mA under fault conditions. The MC1458DR is pin-compatible with the LM1458, LM1558, and other industry-standard dual op-amps, enabling easy substitution in existing designs.","working_principle":"The MC1458DR operates as two independent high-gain voltage amplifiers with internal frequency compensation. Each channel compares the voltage difference between its inverting and non-inverting inputs, amplifying this differential signal by the open-loop gain (typically 100 dB). The internal compensation capacitor (typically 30 pF) ensures stability in unity-gain configurations without requiring external compensation components. The input stage uses a differential pair with constant-current tail bias, providing high common-mode rejection (90 dB typical). The output stage is a Class-AB push-pull configuration with short-circuit current limiting to approximately \u00b125 mA, protecting against output overload conditions.","pin_description":"
      Pin<\/th>Mnemonic<\/th>Description<\/th><\/tr>
      1<\/td>1OUT<\/td>Channel 1 Output<\/td><\/tr>
      2<\/td>1IN-<\/td>Channel 1 Inverting Input<\/td><\/tr>
      3<\/td>1IN+<\/td>Channel 1 Non-inverting Input<\/td><\/tr>
      4<\/td>V-<\/td>Negative Supply Voltage<\/td><\/tr>
      5<\/td>2IN+<\/td>Channel 2 Non-inverting Input<\/td><\/tr>
      6<\/td>2IN-<\/td>Channel 2 Inverting Input<\/td><\/tr>
      7<\/td>2OUT<\/td>Channel 2 Output<\/td><\/tr>
      8<\/td>V+<\/td>Positive Supply Voltage<\/td><\/tr><\/table>","application_scenarios":"
      • Active filter circuits in audio and instrumentation systems requiring dual op-amp channels<\/li>
      • Signal conditioning for sensor interfaces in industrial control with \u00b115V supply<\/li>
      • Summing amplifiers and integrators in analog computing with internal compensation<\/li>
      • Buffer amplifiers for impedance matching in data acquisition systems<\/li>
      • Oscillator circuits for signal generation in test and measurement equipment<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        LM358DR<\/td>TI<\/td>Dual, single-supply, low cost<\/td><\/tr>
        TL072CDR<\/td>TI<\/td>Dual JFET input, lower Ib, 3 MHz GBW<\/td><\/tr>
        NE5532DR<\/td>onsemi<\/td>Dual, low noise, audio-optimized<\/td><\/tr>
        RC4558DR<\/td>TI<\/td>Dual, pin-compatible, 3 MHz GBW<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9001","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=9001"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9001\/revisions"}],"predecessor-version":[{"id":9046,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9001\/revisions\/9046"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9001"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9001"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9001"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}