{"id":6954,"date":"2026-06-22T03:05:03","date_gmt":"2026-06-22T03:05:03","guid":{"rendered":"https:\/\/materialparts.com\/ad620arz\/"},"modified":"2026-06-22T03:05:03","modified_gmt":"2026-06-22T03:05:03","slug":"ad620arz","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ad620arz\/","title":{"rendered":"AD620ARZ"},"content":{"rendered":"

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

The AD620ARZ from Analog Devices is a low-drift, low-power instrumentation amplifier with single-resistor gain setting (1 to 10000), SOIC-8 package, and excellent DC precision.<\/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\n\n\n
\u0627\u0644\u0646\u0648\u0639<\/td>\nLow-Drift Low-Power Instrumentation Amplifier<\/td>\n<\/tr>\n
Gain Range<\/td>\n1 to 10,000 (single external resistor)<\/td>\n<\/tr>\n
Gain Formula<\/td>\nG = 1 + (49.4 kOhm \/ RG)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0645\u062f\u062e\u0644\u0627\u062a<\/td>\n30 uV (typical); 50 uV (max, B grade)<\/td>\n<\/tr>\n
Input Offset Drift<\/td>\n0.6 uV\/C (max, B grade)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u062a\u062d\u064a\u0632 \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n0.5 nA (typical); 1.0 nA (max)<\/td>\n<\/tr>\n
CMRRR<\/td>\n93 dB (min) @ G=1; 130 dB @ G=1000<\/td>\n<\/tr>\n
Bandwidth<\/td>\n1 MHz @ G=1; 120 kHz @ G=100<\/td>\n<\/tr>\n
\u0645\u0639\u062f\u0644 \u0627\u0644\u062f\u0648\u0631\u0627\u0646<\/td>\n1.2 V\/us<\/td>\n<\/tr>\n
Settling Time<\/td>\n15 us to 0.01%<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n+\/-2.3V to +\/-18V<\/td>\n<\/tr>\n
Supply Current<\/td>\n1.3 mA (max)<\/td>\n<\/tr>\n
Input Voltage Noise<\/td>\n9 nV\/sqrt(Hz) @ 1kHz<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 (R suffix)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C (A grade)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Gain set with single external resistor (1 to 10000)<\/li>\n
  • 30uV typical input offset voltage<\/li>\n
  • 0.6uV\/C max offset drift (B grade)<\/li>\n
  • 1nA max input bias current (Super-beta processing)<\/li>\n
  • 100dB min CMRR at G=10<\/li>\n
  • 9 nV\/sqrt(Hz) input voltage noise at 1kHz<\/li>\n
  • 15us settling time to 0.01%<\/li>\n
  • Wide supply range +\/-2.3V to +\/-18V<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Weigh scales<\/li>\n
    • ECG and medical instrumentation<\/li>\n
    • Transducer interfaces<\/li>\n
    • Data acquisition systems<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AD620ARZ from Analog Devices is a low-drift, low-power instrumentation amplifier with single-resistor gain setting (1 to 10000), SOIC-8 package, and excellent DC precision. Key Specifications Type Low-Drift Low-Power Instrumentation Amplifier Gain Range 1 to 10,000 (single external resistor) Gain Formula G = 1 + (49.4 kOhm \/ RG) Input Offset Voltage 30 […]<\/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":[165],"class_list":["post-6954","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"Inst Amp, G=1-10000, 30uV Vos, SOIC-8","date_code":"","package_case":"SOIC-8 (4.9 x 3.9 x 1.5 mm, 1.27mm pitch)","in_stock":4103,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/AD620.pdf","price":"$6.01 @ 1ku","product_introduction":"The AD620ARZ from Analog Devices is a low-cost, high-precision instrumentation amplifier that requires only one external resistor to set gains from 1 to 10,000. The device features 30uV typical input offset voltage, 0.6uV\/C max offset drift, and 1.0nA max input bias current (achieved through Super-beta input processing), making it ideal for precision data acquisition. The 100dB minimum CMRR at G=10 rejects common-mode interference in bridge and thermocouple applications. The 9 nV\/sqrt(Hz) input voltage noise at 1kHz and 0.28uV p-p noise in the 0.1-10Hz band enable low-noise signal conditioning for ECG and weigh scale applications. The 15us settling time to 0.01% supports multiplexed data acquisition systems. The wide +\/-2.3V to +\/-18V supply range allows operation from dual 5V to +\/-15V rails. The 1.3mA max supply current makes it suitable for battery-powered portable equipment. The gain is set by the formula G = 1 + 49.4kOhm\/RG, where RG is connected between the RG pins.","working_principle":"The AD620ARZ uses a classic three-op-amp instrumentation amplifier topology with a precision laser-trimmed thin-film resistor network. The input stage consists of two non-inverting amplifiers (A1, A2) with feedback through the internal 24.7kOhm resistors and the external gain resistor RG. The differential input voltage (V+IN - V-IN) appears across RG, creating a current I = (V+IN - V-IN) \/ RG. This current flows through the internal 24.7kOhm resistors, producing a preamplified differential voltage of (V+IN - V-IN) x (1 + 2 x 24.7k\/RG) = (V+IN - V-IN) x (1 + 49.4k\/RG) at the outputs of A1 and A2. The output stage (A3) is a unity-gain difference amplifier that converts the differential signal to a single-ended output. The internal 24.7kOhm and 10kOhm resistors are laser-trimmed to achieve the high CMRR specification. The Super-beta input transistors provide the 1nA max input bias current by using high-gain PNP transistors in the input pair, which is critical for high-impedance sensor interfaces where bias current would create offset voltage across source resistance. The settling time of 15us to 0.01% is achieved through the optimized compensation of the internal amplifiers.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>RG1<\/td>Input<\/td>Gain resistor connection 1<\/td><\/tr>
      2<\/td>-IN<\/td>Input<\/td>Inverting input (high impedance)<\/td><\/tr>
      3<\/td>+IN<\/td>Input<\/td>Non-inverting input (high impedance)<\/td><\/tr>
      4<\/td>-VS<\/td>Power<\/td>Negative supply<\/td><\/tr>
      5<\/td>REF<\/td>Input<\/td>Output reference (usually GND)<\/td><\/tr>
      6<\/td>OUTPUT<\/td>Output<\/td>Amplified output voltage<\/td><\/tr>
      7<\/td>+VS<\/td>Power<\/td>Positive supply<\/td><\/tr>
      8<\/td>RG2<\/td>Input<\/td>Gain resistor connection 2<\/td><\/tr><\/table>","application_scenarios":"
      • Load cell weigh scale with AD620 at G=1000 and 30uV offset for sub-gram resolution from 2mV\/V bridge output<\/li>
      • ECG front-end instrumentation amplifier with 0.28uV p-p low-frequency noise, 100dB CMRR, and Super-beta 1nA bias current<\/li>
      • Thermocouple signal conditioning with G=100, +\/-15V supply, and 0.6uV\/C offset drift for cold-junction compensation accuracy<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ADI<\/td>AD620BRZ<\/td>SOIC-8<\/td>B grade, better offset spec<\/td><\/tr>
        ADI<\/td>AD8221ARZ<\/td>SOIC-8<\/td>Newer, better CMRR, wider BW<\/td><\/tr>
        TI<\/td>INA128UA<\/td>SOIC-8<\/td>Equivalent function, similar spec<\/td><\/tr>
        ADI<\/td>AD8422ARZ<\/td>SOIC-8<\/td>Lowest noise, 3.2nV\/sqrtHz<\/td><\/tr>
        TI<\/td>INA333AIDR<\/td>SOIC-8<\/td>Zero-drift, 350uA supply<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6954","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=6954"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6954\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6954"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6954"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6954"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6954"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}