{"id":2434,"date":"2026-05-20T03:57:26","date_gmt":"2026-05-20T03:57:26","guid":{"rendered":"https:\/\/materialparts.com\/opa350ua-2k5\/"},"modified":"2026-05-20T03:57:26","modified_gmt":"2026-05-20T03:57:26","slug":"opa350ua-2k5","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/opa350ua-2k5\/","title":{"rendered":"OPA350UA\/2K5"},"content":{"rendered":"

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

The OPA350UA\/2K5 from Texas Instruments is a high-speed, single-supply, rail-to-rail CMOS operational amplifier in the MicroAmplifier series. With a 38MHz gain-bandwidth product, 22V\/us slew rate, and low noise of 5nV\/sqrt(Hz), it is optimized for driving ADCs and signal conditioning in low-voltage systems.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5236\u9020\u5546<\/td>\n\u5fb7\u5dde\u4eea\u5668<\/td>\n<\/tr>\n
Amplifier Type<\/td>\nGeneral Purpose, Rail-to-Rail<\/td>\n<\/tr>\n
\u901a\u9053\u6570<\/td>\n1<\/td>\n<\/tr>\n
\u589e\u76ca-\u5e26\u5bbd\u4e58\u79ef<\/td>\n38 MHz<\/td>\n<\/tr>\n
\u538b\u6446\u7387<\/td>\n22 V\/us<\/td>\n<\/tr>\n
\u8f93\u5165\u5931\u8c03\u7535\u538b<\/td>\n150uV (typ)<\/td>\n<\/tr>\n
\u8f93\u5165\u504f\u7f6e\u7535\u6d41<\/td>\n0.5pA (typ)<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.7V ~ 5.5V<\/td>\n<\/tr>\n
Supply Current<\/td>\n5.2mA (typ)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n8-SOIC (3.9 x 4.9mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C ~ 85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Rail-to-rail input and output<\/li>\n
  • High bandwidth: 38MHz GBW<\/li>\n
  • High slew rate: 22V\/us<\/li>\n
  • Low noise: 5nV\/sqrt(Hz) at 100kHz<\/li>\n
  • Low THD+N: 0.0006%<\/li>\n
  • Ultra-low input bias current: 0.5pA<\/li>\n
  • Unity-gain stable<\/li>\n
  • Output swings within 10mV of rails (10k load)<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • ADC input drivers<\/li>\n
    • Portable and battery-powered instruments<\/li>\n
    • Audio signal processing<\/li>\n
    • Video processing (75-ohm drive capability)<\/li>\n
    • Cell phone PA control loops<\/li>\n
    • Medical instrumentation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The OPA350UA\/2K5 from Texas Instruments is a high-speed, single-supply, rail-to-rail CMOS operational amplifier in the MicroAmplifier series. With a 38MHz gain-bandwidth product, 22V\/us slew rate, and low noise of 5nV\/sqrt(Hz), it is optimized for driving ADCs and signal conditioning in low-voltage systems. Key Specifications Manufacturer Texas Instruments Amplifier Type General Purpose, Rail-to-Rail Number […]<\/p>\n","protected":false},"author":2,"featured_media":2869,"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-2434","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":"38MHz rail-to-rail CMOS op-amp, 22V\/us slew rate, 5nV\/sqrt(Hz) noise, single-supply 2.7V-5.5V, SOIC-8","date_code":"","package_case":"8-SOIC (3.9 x 4.9 mm)","in_stock":6230,"datasheet":"https:\/\/www.ti.com\/product\/OPA350","price":"$1.38 @ 1ku","product_introduction":"The Texas Instruments OPA350UA\/2K5 is a high-speed, rail-to-rail CMOS operational amplifier optimized for low-voltage single-supply operation. Part of the MicroAmplifier series, it delivers a 38MHz gain-bandwidth product and 22V\/us slew rate while consuming only 5.2mA per amplifier. The rail-to-rail input and output capability allows the amplifier to operate with signals that extend to the power supply rails, making it ideal for driving analog-to-digital converters. The very low input bias current of 0.5pA and low noise of 5nV\/sqrt(Hz) ensure precision in high-impedance sensor applications. The device is unity-gain stable and available in tape and reel packaging for automated assembly.","working_principle":"The OPA350 operates as a voltage-feedback operational amplifier with three key subsystems: 1) Input Stage: A CMOS differential input pair provides rail-to-rail common-mode voltage range, from 0.1V below the negative rail to 0.1V above the positive rail, with ultra-low bias current of 0.5pA. 2) Gain Stage: The high-gain voltage amplifier stage achieves 122dB open-loop gain (RL=10k), providing excellent DC precision with only 150uV input offset voltage. 3) Output Stage: A rail-to-rail CMOS output stage swings within 10mV of the supply rails with a 10k load and can drive up to 40mA, making it suitable for driving low-impedance loads including 75-ohm video lines.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>NC<\/td>-<\/td>No connection (or offset trim on some variants)<\/td><\/tr>
      2<\/td>IN-<\/td>Input<\/td>Inverting input<\/td><\/tr>
      3<\/td>IN+<\/td>Input<\/td>Non-inverting input<\/td><\/tr>
      4<\/td>V-<\/td>Power<\/td>Negative supply (or GND in single-supply)<\/td><\/tr>
      5<\/td>NC<\/td>-<\/td>No connection<\/td><\/tr>
      6<\/td>OUT<\/td>Output<\/td>Amplifier output<\/td><\/tr>
      7<\/td>V+<\/td>Power<\/td>Positive supply (2.7V to 5.5V)<\/td><\/tr>
      8<\/td>NC<\/td>-<\/td>No connection<\/td><\/tr><\/table>","application_scenarios":"
      • High-impedance sensor signal conditioning and ADC driver circuits<\/li>
      • Portable and battery-powered medical instrumentation<\/li>
      • Audio signal processing with 0.0006% THD+N<\/li>
      • Video signal processing with 75-ohm drive capability<\/li>
      • Cell phone power amplifier control loops<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>OPA2350UA<\/td>8-SOIC<\/td>Dual channel version<\/td><\/tr>
        TI<\/td>OPA4350EA<\/td>14-SSOP<\/td>Quad channel version<\/td><\/tr>
        TI<\/td>OPA350NA<\/td>MSOP-8<\/td>Single, MSOP package<\/td><\/tr>
        Microchip<\/td>MCP6022-I\/SN<\/td>8-SOIC<\/td>10MHz, RRIO, dual<\/td><\/tr>
        ADI<\/td>AD8605ARTZ<\/td>SOT-23-5<\/td>10MHz, RRIO, single<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2434","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=2434"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/2434\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media\/2869"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=2434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=2434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=2434"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=2434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}