{"id":6660,"date":"2026-06-19T01:06:03","date_gmt":"2026-06-19T01:06:03","guid":{"rendered":"https:\/\/materialparts.com\/ltc1966ims8pbf\/"},"modified":"2026-06-19T01:06:03","modified_gmt":"2026-06-19T01:06:03","slug":"ltc1966ims8pbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ltc1966ims8pbf\/","title":{"rendered":"LTC1966IMS8#PBF"},"content":{"rendered":"

Productos<\/h2>\n

The LTC1966IMS8#PBF from Analog Devices (formerly Linear Technology) is a precision micropower true RMS-to-DC converter utilizing a patented delta-sigma (\u2206\u03a3) computational technique. With 0.1% gain accuracy, 0.02% linearity, and 155 \u00b5A supply current, it is far simpler to use, more accurate, and lower power than conventional log-antilog RMS-to-DC converters. Only one external capacitor is required for operation.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Gain Accuracy<\/td>\n0.1% (50 Hz to 1 kHz)<\/td>\n<\/tr>\n
Total Error<\/td>\n0.25% (50 Hz to 1 kHz)<\/td>\n<\/tr>\n
Linearity<\/td>\n0.02%<\/td>\n<\/tr>\n
Bandwidth<\/td>\n800 kHz (-3 dB), 6 kHz (\u00b11%)<\/td>\n<\/tr>\n
Supply Current<\/td>\n155 \u00b5A typical, 170 \u00b5A max<\/td>\n<\/tr>\n
Shutdown Current<\/td>\n0.1 \u00b5A<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n2.7V to 5.5V single \/ \u00b15.5V dual<\/td>\n<\/tr>\n
Input Range<\/td>\nUp to 1VPEAK differential, rail-to-rail CM<\/td>\n<\/tr>\n
Crest Factor Support<\/td>\nUp to 4<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +85\u00b0C (I grade)<\/td>\n<\/tr>\n
Paquete<\/td>\nMSOP-8 (3\u00d73 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • \u2206\u03a3 computational technique: no diodes, heaters, or logarithms<\/li>\n
  • Only one external averaging capacitor required<\/li>\n
  • 0.1% gain accuracy with 0.02% linearity<\/li>\n
  • Differential or single-ended input with rail-to-rail common mode<\/li>\n
  • Constant bandwidth independent of input voltage<\/li>\n
  • Rail-to-rail output with separate output reference pin<\/li>\n
  • Ultra-low 0.1 \u00b5A shutdown current<\/li>\n
  • Insensitive to PCB soldering stress and temperature drift<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • True RMS digital multimeters and panel meters<\/li>\n
    • True RMS AC + DC measurements<\/li>\n
    • Vibration and rumble monitoring systems<\/li>\n
    • Audio level measurement and compression<\/li>\n
    • Power line voltage and current monitoring<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LTC1966IMS8#PBF from Analog Devices (formerly Linear Technology) is a precision micropower true RMS-to-DC converter utilizing a patented delta-sigma (\u2206\u03a3) computational technique. With 0.1% gain accuracy, 0.02% linearity, and 155 \u00b5A supply current, it is far simpler to use, more accurate, and lower power than conventional log-antilog RMS-to-DC converters. Only one external capacitor […]<\/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":[13],"tags":[],"chip_brand":[178],"class_list":["post-6660","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","chip_brand-analog-devices"],"acf":{"brief_explanation":"RMS-to-DC converter, \u2206\u03a3, 0.1% accuracy, 155\u00b5A, MSOP-8","date_code":"","package_case":"MSOP-8 (3.0\u00d73.0\u00d70.85 mm, 0.65mm pitch)","in_stock":1600,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/1966fb.pdf","price":"$4.95 @ 1ku","product_introduction":"The LTC1966IMS8#PBF from Analog Devices is a precision micropower RMS-to-DC converter using patented \u2206\u03a3 technology. Achieving 0.1% gain accuracy and 0.02% linearity with only one external capacitor, it eliminates the complexity and drift of traditional log-antilog converters. The 155 \u00b5A supply current, differential input, and constant 800 kHz bandwidth make it ideal for true RMS multimeters, power monitoring, and vibration measurement in portable and industrial instruments.","working_principle":"The LTC1966 uses a patented delta-sigma (\u2206\u03a3) computational technique to perform true RMS-to-DC conversion. Unlike traditional log-antilog converters that compute Vrms = anti-log(avg(log\u00b2(Vin))), the LTC1966 uses a \u2206\u03a3 modulator to square the input signal, then averages the squared output through an external capacitor, and finally takes the square root via a \u2206\u03a3 demodulator circuit. This approach provides exceptional linearity (0.02%) and accuracy (0.1%) without the temperature sensitivity and matching requirements of log-antilog circuits. The external averaging capacitor (typically 1 \u00b5F) sets the low-frequency cutoff, while the bandwidth remains constant at 800 kHz regardless of input amplitude. The separate VOUTRTN pin allows the DC output to be referenced to any voltage within the supply rails.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>VDD<\/td>Power<\/td>Positive supply (2.7-5.5V)<\/td><\/tr>\n
      2<\/td>VIN2<\/td>Input<\/td>Differential input negative terminal<\/td><\/tr>\n
      3<\/td>VIN1<\/td>Input<\/td>Differential input positive terminal<\/td><\/tr>\n
      4<\/td>VSS<\/td>Power<\/td>Negative supply \/ ground (0V for single supply)<\/td><\/tr>\n
      5<\/td>ENABLE<\/td>Input<\/td>Shutdown control (LOW = shutdown, HIGH = active)<\/td><\/tr>\n
      6<\/td>CAVE<\/td>I\/O<\/td>Averaging capacitor connection (1\u00b5F typical)<\/td><\/tr>\n
      7<\/td>VOUTRTN<\/td>Input<\/td>Output reference pin (output DC level shift)<\/td><\/tr>\n
      8<\/td>VOUT<\/td>Output<\/td>RMS-converted DC output voltage<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • True RMS digital multimeters and handheld panel meters<\/li>\n
      • True RMS AC+DC power line voltage and current monitoring<\/li>\n
      • Vibration and rumble monitoring for industrial equipment<\/li>\n
      • Audio level measurement, compression, and VU metering<\/li>\n
      • Battery-powered portable instrumentation<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        ADI<\/td>LTC1967CMS8#PBF<\/td>MSOP-8<\/td>Higher bandwidth (4MHz), 0.1% accuracy<\/td><\/tr>\n
        ADI<\/td>LTC1968CMS8#PBF<\/td>MSOP-8<\/td>Even higher bandwidth (8MHz), faster response<\/td><\/tr>\n
        ADI<\/td>AD736JRZ<\/td>DIP-8\/SOIC-8<\/td>Traditional RMS-DC, lower cost, lower accuracy<\/td><\/tr>\n
        Microchip<\/td>MCP3901<\/td>SSOP-24<\/td>Energy metering IC with RMS computation<\/td><\/tr>\n
        ADI<\/td>LTC1966CMS8#PBF<\/td>MSOP-8<\/td>Commercial temp (0-70\u00b0C), lower cost<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6660","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=6660"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6660\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6660"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}