{"id":8357,"date":"2026-06-28T12:42:53","date_gmt":"2026-06-28T12:42:53","guid":{"rendered":"https:\/\/materialparts.com\/ad8418brmz-rl\/"},"modified":"2026-06-28T12:42:53","modified_gmt":"2026-06-28T12:42:53","slug":"ad8418brmz-rl","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ad8418brmz-rl\/","title":{"rendered":"AD8418BRMZ-RL"},"content":{"rendered":"

Productos<\/h2>\n

The AD8418BRMZ-RL from Analog Devices is a bidirectional, zero-drift current sense amplifier with a fixed gain of 20 V\/V in an MSOP-8 package. It features 0.1 \u00b5V\/\u00b0C offset drift, \u00b1400 \u00b5V max offset over temperature, and a -2 V to +70 V input common-mode range, making it ideal for high-side current sensing in automotive and industrial systems.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Gain<\/td>\n20 V\/V (fixed)<\/td>\n<\/tr>\n
Gain Error<\/td>\n\u00b10.15% max over temperature<\/td>\n<\/tr>\n
Offset Voltage (RTI)<\/td>\n\u00b1200 \u00b5V typ, \u00b1400 \u00b5V max<\/td>\n<\/tr>\n
Offset Drift<\/td>\n0.1 \u00b5V\/\u00b0C typ<\/td>\n<\/tr>\n
Common-Mode Range<\/td>\n-2 V to +70 V (operating)<\/td>\n<\/tr>\n
CMRR<\/td>\n90 dB (DC), 86 dB (DC to 10 kHz)<\/td>\n<\/tr>\n
Bandwidth (-3 dB)<\/td>\n250 kHz<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n2.7 V to 5.5 V<\/td>\n<\/tr>\n
Supply Current<\/td>\n2.6 mA typ<\/td>\n<\/tr>\n
Paquete<\/td>\nMSOP-8<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Zero-drift core with 0.1 \u00b5V\/\u00b0C typical offset drift<\/li>\n

High common-mode voltage: -2 V to +70 V operating, -4 V to +85 V survival<\/li>\n
  • Integrated EMI filters for noisy environments<\/li>\n
  • Bidirectional current measurement capability<\/li>\n
  • Automotive qualified (AD8418W variant)<\/li>\n
  • Buffered output directly interfaces with ADCs<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Motor control high-side current sensing<\/li>\n
    • Battery management current monitoring<\/li>\n
    • Solenoid control and diagnostics<\/li>\n
    • Power supply load current measurement<\/li>\n
    • Automotive current monitoring and protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AD8418BRMZ-RL from Analog Devices is a bidirectional, zero-drift current sense amplifier with a fixed gain of 20 V\/V in an MSOP-8 package. It features 0.1 \u00b5V\/\u00b0C offset drift, \u00b1400 \u00b5V max offset over temperature, and a -2 V to +70 V input common-mode range, making it ideal for high-side current sensing in […]<\/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-8357","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-adi"],"acf":{"brief_explanation":"Bidirectional zero-drift current sense amp, 20V\/V gain, -2V to +70V Vcm, MSOP-8","date_code":"","package_case":"MSOP-8 (3.00 x 3.00 x 0.85 mm)","in_stock":7813,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/AD8418.pdf","price":"$1.74 @ 1ku","product_introduction":"The AD8418BRMZ-RL from Analog Devices is a high-voltage, high-resolution bidirectional current sense amplifier with a fixed gain of 20 V\/V in an 8-lead MSOP package. Using a zero-drift core architecture, it achieves only 0.1 \u00b5V\/\u00b0C typical offset drift and \u00b1400 \u00b5V maximum offset voltage over the full -40\u00b0C to +125\u00b0C temperature range. The gain error is specified at \u00b10.15% maximum over temperature. The device accepts common-mode voltages from -2 V to +70 V while operating from a 2.7 V to 5.5 V supply, enabling high-side current sensing in 48 V automotive and industrial power systems. Integrated EMI filters reject high-frequency interference from PWM motor drive signals. The buffered output directly drives ADC inputs without additional buffer stages. The bidirectional architecture supports both charging and discharging current measurement using two reference pins.","working_principle":"The AD8418 uses a zero-drift chopped amplifier core to achieve ultra-low offset and drift. The input stage includes integrated EMI low-pass filters that reject high-frequency common-mode and differential noise before the signal reaches the amplifier. The differential voltage across the shunt resistor is amplified by the fixed gain of 20 V\/V through a precision resistor network. The zero-drift architecture uses auto-zeroing techniques where the amplifier periodically measures and cancels its own offset, resulting in the 0.1 \u00b5V\/\u00b0C drift specification. The output stage is a buffered voltage source capable of driving ADC inputs directly. Two reference pins (VREF1 and VREF2) set the output baseline voltage: when tied together and connected to VS\/2, the output sits at VS\/2 with zero differential input, allowing bidirectional current measurement. When one reference pin is grounded, unidirectional measurement is supported.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VIN+<\/td>Input<\/td>Non-inverting shunt voltage input (high-side connection)<\/td><\/tr>
      2<\/td>VIN-<\/td>Input<\/td>Inverting shunt voltage input (low-side connection)<\/td><\/tr>
      3<\/td>VREF2<\/td>Input<\/td>Reference voltage input 2 (for bidirectional output offset)<\/td><\/tr>
      4<\/td>GND<\/td>Ground<\/td>Device ground<\/td><\/tr>
      5<\/td>VOUT<\/td>Output<\/td>Amplified output voltage (gain \u00d7 Vshunt + Vref)<\/td><\/tr>
      6<\/td>VS<\/td>Power<\/td>Supply voltage (2.7 V to 5.5 V)<\/td><\/tr>
      7<\/td>VREF1<\/td>Input<\/td>Reference voltage input 1 (for bidirectional output offset)<\/td><\/tr>
      8<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr><\/table>","application_scenarios":"
      • Motor Control Current Sensing<\/strong>: High-side shunt measurement in three-phase BLDC and PMSM motor drives with PWM common-mode rejection<\/li>
      • Battery Management<\/strong>: Bidirectional charge and discharge current monitoring in 48 V and 12 V battery systems<\/li>
      • Solenoid Control<\/strong>: Peak and hold current measurement for automotive transmission and fuel injector solenoids<\/li>
      • Power Supply Monitoring<\/strong>: Load current measurement and overcurrent protection in telecom and server power supplies<\/li>
      • Industrial Process Control<\/strong>: 4-20 mA loop current measurement with high common-mode rejection<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Gain<\/th>Vcm<\/th>Vos<\/th>Package<\/th>Notes<\/th><\/tr>
        AD8418WBRMZ<\/td>Analog Devices<\/td>20 V\/V<\/td>-2 to 70 V<\/td>400 \u00b5V<\/td>MSOP-8<\/td>Automotive qualified<\/td><\/tr>
        INA240A1DR<\/td>Texas Instruments<\/td>20 V\/V<\/td>-4 to 80 V<\/td>25 \u00b5V<\/td>SOIC-8<\/td>Lower offset, enhanced PWM<\/td><\/tr>
        MAX9918FETA+T<\/td>Analog Devices<\/td>50 V\/V<\/td>-20 to 75 V<\/td>500 \u00b5V<\/td>SOT-23-8<\/td>Higher gain, smaller package<\/td><\/tr>
        TSC2011IST<\/td>STMicroelectronics<\/td>20 V\/V<\/td>-4 to 70 V<\/td>200 \u00b5V<\/td>MSOP-8<\/td>Similar performance<\/td><\/tr>
        AD8206BRMZ<\/td>Analog Devices<\/td>20 V\/V<\/td>-2 to 65 V<\/td>1 mV<\/td>MSOP-8<\/td>Legacy, higher offset<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8357","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=8357"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8357\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8357"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}