{"id":6845,"date":"2026-06-21T13:09:19","date_gmt":"2026-06-21T13:09:19","guid":{"rendered":"https:\/\/materialparts.com\/opa2343ua-2k5\/"},"modified":"2026-06-21T13:09:19","modified_gmt":"2026-06-21T13:09:19","slug":"opa2343ua-2k5","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/opa2343ua-2k5\/","title":{"rendered":"OPA2343UA\/2K5"},"content":{"rendered":"

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

The OPA2343UA\/2K5 from Texas Instruments is a dual 5.5MHz rail-to-rail CMOS op amp with 1pA input bias current and +\/-1mV offset in an SOIC-8 package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\nDual Rail-to-Rail CMOS Operational Amplifier<\/td>\n<\/tr>\n
\u6e20\u9053<\/td>\n2<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.5 V to 5.5 V (single)<\/td>\n<\/tr>\n
Gain Bandwidth Product<\/td>\n5.5 MHz<\/td>\n<\/tr>\n
\u538b\u6446\u7387<\/td>\n6 V\/us<\/td>\n<\/tr>\n
\u8f93\u5165\u5931\u8c03\u7535\u538b<\/td>\n+\/-1 mV (max)<\/td>\n<\/tr>\n
\u8f93\u5165\u504f\u7f6e\u7535\u6d41<\/td>\n1 pA (typical)<\/td>\n<\/tr>\n
CMRR<\/td>\n80 dB (typical)<\/td>\n<\/tr>\n
Supply Current per Channel<\/td>\n1.5 mA (typical)<\/td>\n<\/tr>\n
Input\/Output<\/td>\nRail-to-Rail<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOIC-8<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Rail-to-rail input and output<\/li>\n
  • 5.5 MHz gain bandwidth product<\/li>\n
  • 1 pA input bias current (CMOS input)<\/li>\n
  • +\/-1 mV max offset voltage<\/li>\n
  • 2.5V to 5.5V single supply<\/li>\n
  • Unity-gain stable<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Piezoelectric sensor amplifiers<\/li>\n
    • Photodiode transimpedance amplifiers<\/li>\n
    • Battery-powered signal conditioning<\/li>\n
    • High-impedance buffer amplifiers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The OPA2343UA\/2K5 from Texas Instruments is a dual 5.5MHz rail-to-rail CMOS op amp with 1pA input bias current and +\/-1mV offset in an SOIC-8 package. Key Specifications Type Dual Rail-to-Rail CMOS Operational Amplifier Channels 2 Supply Voltage 2.5 V to 5.5 V (single) Gain Bandwidth Product 5.5 MHz Slew Rate 6 V\/us Input […]<\/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-6845","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Dual RRIO CMOS Op Amp, 5.5MHz, 1pA IB, +\/-1mV Vos, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 x 1.5 mm)","in_stock":4567,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/opa343.pdf","price":"$2.80 @ 1ku","product_introduction":"The OPA2343UA\/2K5 from Texas Instruments is a dual rail-to-rail input\/output CMOS operational amplifier with 5.5 MHz gain bandwidth product and 1 pA typical input bias current. The CMOS input stage provides virtually zero input current, making it ideal for high-impedance sensor interfaces such as piezoelectric transducers and photodiode amplifiers. The rail-to-rail input and output capability maximizes dynamic range in single-supply applications from 2.5V to 5.5V. The +\/-1 mV maximum offset voltage and 80 dB CMRR support precision signal processing. The 5.5 MHz bandwidth and 6 V\/us slew rate enable active filter and signal conditioning applications at frequencies well beyond DC.","working_principle":"The OPA2343UA\/2K5 uses a CMOS input stage with complementary P-channel and N-channel differential pairs to achieve rail-to-rail input common-mode range. The transition between the two pairs occurs at a crossover voltage near mid-supply. The folded-cascode gain stage provides the high DC gain needed for low offset and high CMRR. The output stage uses complementary P-channel and N-channel MOSFETs in a push-pull configuration that swings to within a few millivolts of both supply rails at light loads. The 1 pA input bias current is inherent to the MOSFET gate input, where the gate oxide provides virtually infinite DC input resistance. The internal compensation ensures unity-gain stability. The \/2K5 suffix indicates tape and reel packaging with 2500 devices per reel.","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>Negative supply \/ GND<\/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>V+<\/td>Power<\/td>Positive supply (2.5-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Dual photodiode transimpedance amplifier with 1pA bias current for optical receiver<\/li>
      • Piezoelectric accelerometer charge amplifier with rail-to-rail output<\/li>
      • pH electrode dual buffer amplifier with ultra-low input current<\/li>
      • 3.3V dual-channel active filter for ADC anti-aliasing<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>OPA2340UA\/2K5<\/td>SOIC-8<\/td>5.5MHz, similar, higher supply range<\/td><\/tr>
        Microchip<\/td>MCP6022-I\/SN<\/td>SOIC-8<\/td>10MHz, RRIO, CMOS, similar<\/td><\/tr>
        TI<\/td>OPA2320AIDR<\/td>SOIC-8<\/td>20MHz, low noise, upgrade<\/td><\/tr>
        TI<\/td>OPA2348AIDR<\/td>SOIC-8<\/td>1MHz, lower power, RRIO<\/td><\/tr>
        ADI<\/td>ADA4505-2AKSZ<\/td>MSOP-8<\/td>Zero-drift, 1pA, upgrade<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6845","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=6845"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6845\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6845"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}