{"id":8559,"date":"2026-06-29T05:13:20","date_gmt":"2026-06-29T05:13:20","guid":{"rendered":"https:\/\/materialparts.com\/ada4891-2arz-r7\/"},"modified":"2026-06-29T05:13:20","modified_gmt":"2026-06-29T05:13:20","slug":"ada4891-2arz-r7","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ada4891-2arz-r7\/","title":{"rendered":"ADA4891-2ARZ-R7"},"content":{"rendered":"

Productos<\/h2>\n

The ADA4891-2ARZ-R7 from Analog Devices is a dual-channel, high-speed, single-supply operational amplifier in an SOIC-8 package. With 240MHz bandwidth, 170V\/us slew rate, and rail-to-rail output, it delivers excellent performance for video buffering, ADC driving, and active filtering while consuming only 4.3mA per channel from a 2.7V to 5.5V supply.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Canales<\/td>\n2<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n2.7V ~ 5.5V (single supply)<\/td>\n<\/tr>\n
Bandwidth (-3dB, G=+1)<\/td>\n240MHz<\/td>\n<\/tr>\n
Velocidad de giro<\/td>\n170V\/us<\/td>\n<\/tr>\n
Tensi\u00f3n de offset de entrada<\/td>\nplus\/minus 3mV (max, 25C)<\/td>\n<\/tr>\n
Supply Current per Channel<\/td>\n4.3mA typical<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n150mA peak<\/td>\n<\/tr>\n
Output Swing<\/td>\nRail-to-rail (0.1V ~ VCC-0.1V)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C ~ +125C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 240MHz bandwidth and 170V\/us slew rate for high-speed signal processing<\/li>\n
  • Rail-to-rail output swings within 100mV of both supply rails<\/li>\n
  • Independent shutdown per channel (SDA, SDB pins) reduces power to 0.5uA<\/li>\n
  • Low 4.4nV\/rtHz input noise for precision applications<\/li>\n
  • 30ns settling time to 0.1% for fast ADC driving<\/li>\n
  • 150mA peak output current for driving low-impedance loads<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Video buffer and line driver<\/li>\n
    • ADC and DAC driver amplifier<\/li>\n
    • Active filter for communications<\/li>\n
    • Portable medical and instrumentation front-ends<\/li>\n
    • Single-supply signal conditioning<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ADA4891-2ARZ-R7 from Analog Devices is a dual-channel, high-speed, single-supply operational amplifier in an SOIC-8 package. With 240MHz bandwidth, 170V\/us slew rate, and rail-to-rail output, it delivers excellent performance for video buffering, ADC driving, and active filtering while consuming only 4.3mA per channel from a 2.7V to 5.5V supply. Key Specifications Channels 2 […]<\/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-8559","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"ADI dual-channel 240MHz op-amp, 170V\/us slew rate, R-R output, SOIC-8, per-channel shutdown","date_code":"","package_case":"SOIC-8 (ARZ suffix, 4.9mm x 3.9mm)","in_stock":10935,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/ADA4891-1_4891-2_4891-3_4891-4.pdf","price":"$0.72 @ 1ku","product_introduction":"The ADA4891-2ARZ-R7 from Analog Devices is a dual-channel, high-speed voltage feedback operational amplifier optimized for single-supply operation from 2.7V to 5.5V. With a 240MHz -3dB bandwidth at unity gain and a 170V\/us slew rate, it is well-suited for video and high-frequency signal processing applications. The rail-to-rail output stage swings to within 100mV of both supply rails on a 1k-ohm load, maximizing dynamic range in single-supply systems. Each channel features an independent shutdown pin that reduces supply current to 0.5uA when the amplifier is not needed, making the device suitable for power-sensitive applications with intermittent signal processing. The 150mA peak output current capability allows the ADA4891-2 to drive low-impedance loads such as 75-ohm video cables and low-impedance ADC inputs directly.","working_principle":"The ADA4891-2ARZ-R7 uses a voltage feedback architecture with a two-stage design. The input stage is a differential pair that converts the input voltage difference into a current signal. The transimpedance stage (gain stage) converts this current back to voltage with high gain. The output stage is a rail-to-rail class-AB push-pull buffer that can swing within 100mV of both supply rails. The 240MHz bandwidth and 170V\/us slew rate are achieved through a wideband internal compensation scheme optimized for unity-gain stability. The shutdown function works by disabling the bias current of the input stage, effectively turning off the amplifier while consuming only 0.5uA. The device settles to 0.1% in 30ns for a 2V step, making it an excellent driver for medium-speed ADCs that require fast settling.","pin_description":"\n
      Pin<\/th>Name<\/th>Function<\/th><\/tr>\n
      1<\/td>OUT A<\/td>Channel A Output<\/td><\/tr>\n
      2<\/td>-IN A<\/td>Channel A Inverting Input<\/td><\/tr>\n
      3<\/td>+IN A<\/td>Channel A Non-inverting Input<\/td><\/tr>\n
      4<\/td>V-<\/td>Negative Supply \/ Ground<\/td><\/tr>\n
      5<\/td>+IN B<\/td>Channel B Non-inverting Input<\/td><\/tr>\n
      6<\/td>-IN B<\/td>Channel B Inverting Input<\/td><\/tr>\n
      7<\/td>OUT B<\/td>Channel B Output<\/td><\/tr>\n
      8<\/td>V+<\/td>Positive Supply<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Video buffering: Drive 75-ohm video cables with 150mA output current while maintaining signal fidelity up to 240MHz<\/li>\n
      • ADC driving: Settle to 0.1% in 30ns for driving medium-speed (10~50MSPS) ADCs with rail-to-rail output range<\/li>\n
      • Active filters: Implement high-frequency low-pass, band-pass, or Sallen-Key filters with 240MHz bandwidth<\/li>\n
      • Portable instrumentation: Condition sensor signals in battery-powered devices with per-channel shutdown for power savings<\/li>\n
      • Single-supply signal chain: Replace dual-supply op-amps in 3.3V\/5V systems with rail-to-rail output and 4.4nV\/rtHz noise<\/li>\n<\/ul>","alternative_models":"\n
        Model<\/th>Brand<\/th>GBW<\/th>Slew Rate<\/th>Channels<\/th><\/tr>\n
        ADA4891-1ARZ<\/td>ADI<\/td>240MHz<\/td>170V\/us<\/td>1<\/td><\/tr>\n
        ADA4891-4ARUZ<\/td>ADI<\/td>240MHz<\/td>170V\/us<\/td>4<\/td><\/tr>\n
        LMH6643MA<\/td>TI<\/td>130MHz<\/td>130V\/us<\/td>2<\/td><\/tr>\n
        OPA2350EA<\/td>TI<\/td>38MHz<\/td>22V\/us<\/td>2<\/td><\/tr>\n
        MCP6292-I\/SN<\/td>Microchip<\/td>10MHz<\/td>6V\/us<\/td>2<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=8559"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8559\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8559"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}