{"id":2536,"date":"2026-05-23T06:10:27","date_gmt":"2026-05-23T06:10:27","guid":{"rendered":"https:\/\/materialparts.com\/ad8021arz\/"},"modified":"2026-05-23T06:10:27","modified_gmt":"2026-05-23T06:10:27","slug":"ad8021arz","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ad8021arz\/","title":{"rendered":"AD8021ARZ"},"content":{"rendered":"

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

The AD8021ARZ from Analog Devices is a low-noise, high-speed voltage feedback amplifier designed for 16-bit resolution systems. Available in an 8-lead SOIC package, it delivers 200MHz bandwidth at G=-1 with only 2.1nV\/sqrtHz input voltage noise and 6.7mA supply current.<\/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
Bandwidth<\/td>\n200MHz (G=-1)<\/td>\n<\/tr>\n
Input Voltage Noise<\/td>\n2.1 nV\/sqrtHz<\/td>\n<\/tr>\n
Input Current Noise<\/td>\n2.1 pA\/sqrtHz<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n5V to 24V (+-2.25V to +-12V)<\/td>\n<\/tr>\n
Supply Current<\/td>\n6.7mA (typical)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u062f\u062e\u0644\u0627\u062a<\/td>\n1mV max<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n8-SOIC<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C ~ 85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • Low noise: 2.1 nV\/sqrtHz voltage noise<\/li>\n
  • High speed: 200MHz at G=-1<\/li>\n
  • Low power: 34mW on 5V supply<\/li>\n
  • Low distortion: -93 dBc HD2 at 1MHz<\/li>\n
  • Custom compensation for bandwidth control<\/li>\n
  • Output disable function (1.3mA standby)<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • 16-bit ADC driver circuits<\/li>\n
    • High-speed signal processing chains<\/li>\n
    • Medical imaging systems<\/li>\n
    • Test and measurement instrumentation<\/li>\n
    • Active filter and integrator circuits<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AD8021ARZ from Analog Devices is a low-noise, high-speed voltage feedback amplifier designed for 16-bit resolution systems. Available in an 8-lead SOIC package, it delivers 200MHz bandwidth at G=-1 with only 2.1nV\/sqrtHz input voltage noise and 6.7mA supply current. Key Specifications Bandwidth 200MHz (G=-1) Input Voltage Noise 2.1 nV\/sqrtHz Input Current Noise 2.1 […]<\/p>\n","protected":false},"author":2,"featured_media":2581,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[165],"class_list":["post-2536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"Low-noise 200MHz op-amp, 2.1nV\/sqrtHz, 16-bit systems, 8-SOIC","date_code":"","package_case":"8-SOIC (5.0 x 4.0 mm)","in_stock":7890,"datasheet":"https:\/\/www.analog.com\/en\/products\/ad8021.html","price":"$1.77 @ 1ku","product_introduction":"The AD8021 is an exceptionally high-performance voltage feedback amplifier optimized for 16-bit resolution systems. It combines the industry's lowest voltage noise (2.1 nV\/sqrtHz) with low current noise (2.1 pA\/sqrtHz) at a quiescent supply current of just 7mA on +\/-5V rails. The amplifier supports supply voltages from +\/-2.25V to +\/-12V as well as single 5V operation. A compensation pin allows constant bandwidth from G=-1 to G=-10, and an output disable pin reduces supply current to 1.3mA when the amplifier is not in use.","working_principle":"The AD8021 uses a voltage feedback architecture with a custom compensation node that allows external capacitance to set the frequency response. The input stage employs a low-noise differential pair biased for optimal noise-speed tradeoff. At G=-1, the bandwidth reaches 200MHz with constant bandwidth maintained up to G=-10. The output stage provides low distortion (-93 dBc HD2 at 1MHz) suitable for driving 16-bit ADCs. The disable function opens the output and reduces quiescent current, enabling multiplexed signal chains.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>COMP<\/td>I\/O<\/td>Compensation capacitor<\/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>-VS<\/td>Power<\/td>Negative supply<\/td><\/tr>
      5<\/td>DISABLE<\/td>Input<\/td>Output disable (active high)<\/td><\/tr>
      6<\/td>OUTPUT<\/td>Output<\/td>Amplifier output<\/td><\/tr>
      7<\/td>+VS<\/td>Power<\/td>Positive supply<\/td><\/tr>
      8<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr><\/table>","application_scenarios":"
      • 16-bit SAR ADC driver with low distortion<\/li>
      • High-speed signal processing front-ends<\/li>
      • Medical imaging and ultrasound systems<\/li>
      • Precision test and measurement equipment<\/li>
      • Active filters requiring low noise and wide bandwidth<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Analog Devices<\/td>AD8021ARMZ<\/td>8-MSOP<\/td>MSOP package option<\/td><\/tr>
        Texas Instruments<\/td>THS4551<\/td>8-VSSOP<\/td>Low-noise FDA, 150MHz<\/td><\/tr>
        Analog Devices<\/td>ADA4899-1<\/td>8-SOIC<\/td>Ultra-low noise, 600MHz<\/td><\/tr>
        Texas Instruments<\/td>OPA838<\/td>8-SOIC<\/td>Low-noise, 300MHz<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2536","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=2536"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2536\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media\/2581"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2536"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2536"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}