{"id":7013,"date":"2026-06-23T02:04:39","date_gmt":"2026-06-23T02:04:39","guid":{"rendered":"https:\/\/materialparts.com\/ina219bidcnr\/"},"modified":"2026-06-23T02:04:39","modified_gmt":"2026-06-23T02:04:39","slug":"ina219bidcnr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ina219bidcnr\/","title":{"rendered":"INA219BIDCNR"},"content":{"rendered":"

Productos<\/h2>\n

The INA219BIDCNR from Texas Instruments is a zero-drift, bidirectional current\/power monitor with an I2C interface in a compact VSSOP-8 (3x3mm) package. It measures shunt voltage, bus voltage, current, and power with 12-bit resolution (configurable to 16-bit) across a 0V to 26V common-mode range, achieving plus or minus 0.1% gain accuracy.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Common-Mode Voltage Range<\/td>\n0V ~ 26V<\/td>\n<\/tr>\n
Resolution<\/td>\n12-bit (configurable 16-bit)<\/td>\n<\/tr>\n
Measurement Parameters<\/td>\nShunt voltage, bus voltage, current, power<\/td>\n<\/tr>\n
Interface<\/td>\nI2C (16 address options)<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n3.0V ~ 5.5V<\/td>\n<\/tr>\n
Gain Accuracy<\/td>\n+\/-0.1%<\/td>\n<\/tr>\n
Corriente de reposo<\/td>\n1mA (Typical)<\/td>\n<\/tr>\n
Shutdown Current<\/td>\n6.5uA (Typical)<\/td>\n<\/tr>\n
Paquete<\/td>\nVSSOP-8 (3.00 x 3.00mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C ~ +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Zero-drift architecture for ultra-stable measurements over time and temperature<\/li>\n
  • Bidirectional current measurement capability<\/li>\n
  • Programmable calibration register for flexible shunt resistor values<\/li>\n
  • 16 programmable I2C addresses for multi-device bus configurations<\/li>\n
  • Configurable ADC resolution and conversion time<\/li>\n
  • Power calculation performed internally<\/li>\n
  • Built-in alert function with programmable over-limit threshold<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Battery charging and discharging monitoring<\/li>\n
    • Power supply load monitoring<\/li>\n
    • Solar panel output measurement<\/li>\n
    • Motor drive current sensing<\/li>\n
    • Server rack power monitoring<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The INA219BIDCNR from Texas Instruments is a zero-drift, bidirectional current\/power monitor with an I2C interface in a compact VSSOP-8 (3x3mm) package. It measures shunt voltage, bus voltage, current, and power with 12-bit resolution (configurable to 16-bit) across a 0V to 26V common-mode range, achieving plus or minus 0.1% gain accuracy. Key Specifications Common-Mode […]<\/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":[13,42],"tags":[],"chip_brand":[138],"class_list":["post-7013","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-sensors","chip_brand-ti"],"acf":{"brief_explanation":"Zero-drift bidirectional current\/power monitor with I2C, 0-26V common-mode, +\/-0.1% accuracy, 12\/16-bit ADC in VSSOP-8","date_code":"","package_case":"VSSOP-8 (3.00 x 3.00 mm)","in_stock":4859,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ina219.pdf","price":"$1.85 @ 1ku","product_introduction":"The INA219B is a high-side, bidirectional current shunt and power monitor from Texas Instruments with an I2C interface. It features a zero-drift architecture that provides excellent measurement stability over time and temperature. The device can sense drops across shunt resistors at common-mode voltages from 0V to 26V, independent of the supply voltage. The INA219B reports current, bus voltage, shunt voltage, and power. A programmable calibration register, combined with an internal multiplier, directly computes current in amperes and power in watts. The high-accuracy 12-bit ADC can be reconfigured to 16-bit oversampling for improved resolution. Sixteen programmable I2C addresses allow multiple devices on a single bus.","working_principle":"The INA219B operates through three key subsystems: (1) A precision differential amplifier measures the voltage across an external shunt resistor with zero-drift architecture that auto-calibrates offset periodically. The amplified shunt voltage is digitized by the ADC. (2) A separate ADC channel measures the bus voltage at the IN- pin relative to ground, with an input range of 0V to 26V. (3) A digital computation engine applies the calibration value stored in the Calibration register to the digitized shunt voltage to compute the actual current value. The power value is then computed by multiplying the current and bus voltage values internally, relieving the host processor of this calculation. All results are stored in separate readable registers accessible via the I2C interface.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>IN+<\/td>Positive shunt voltage input (load side)<\/td><\/tr>
      2<\/td>IN-<\/td>Negative shunt voltage input (bus side)<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td><\/tr>
      4<\/td>SDA<\/td>I2C data (open-drain)<\/td><\/tr>
      5<\/td>SCL<\/td>I2C clock (open-drain)<\/td><\/tr>
      6<\/td>A0<\/td>I2C address select bit 0<\/td><\/tr>
      7<\/td>A1<\/td>I2C address select bit 1<\/td><\/tr>
      8<\/td>VS<\/td>Supply voltage (3.0V-5.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • Battery Management System<\/b>: Monitors charge\/discharge current and battery voltage with +\/-0.1% accuracy for state-of-charge estimation<\/li>
      • Server Rack Power Metering<\/b>: 16 I2C addresses enable monitoring of multiple power rails on a single bus<\/li>
      • Solar Panel MPPT Controller<\/b>: Measures panel output current and voltage with zero-drift stability for maximum power point tracking<\/li>
      • Motor Drive Protection<\/b>: Bidirectional current sensing detects stall and overload conditions with programmable alert threshold<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        INA226<\/td>TI<\/td>36V common-mode, 16-bit, alert pin<\/td><\/tr>
        INA260<\/td>TI<\/td>36V, 16-bit, integrated 2mOhm shunt<\/td><\/tr>
        PAC1710-1-AIA<\/td>Microchip<\/td>0-32V, 11-bit, power monitor<\/td><\/tr>
        MAX34417<\/td>ADI<\/td>12-channel power accumulator<\/td><\/tr>
        LTC2945<\/td>ADI<\/td>0-80V, 12-bit, I2C power monitor<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7013","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=7013"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7013\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=7013"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=7013"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=7013"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7013"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}