{"id":7643,"date":"2026-06-26T07:07:19","date_gmt":"2026-06-26T07:07:19","guid":{"rendered":"https:\/\/materialparts.com\/ina219aidcnr-2\/"},"modified":"2026-06-26T14:11:55","modified_gmt":"2026-06-26T14:11:55","slug":"ina219aidcnr-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ina219aidcnr-2\/","title":{"rendered":"INA219AIDCNR"},"content":{"rendered":"

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

The INA219AIDCNR from Texas Instruments is a 26V 12-bit I2C current\/power monitor with programmable PGA and calibration in SOT-23-8.<\/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
Common-Mode Range<\/td>\n0V to 26V<\/td>\n<\/tr>\n
Resolution<\/td>\n12-bit ADC<\/td>\n<\/tr>\n
Shunt Voltage Range<\/td>\n+\/-320mV (PGA \/8)<\/td>\n<\/tr>\n
PGA Gains<\/td>\n\/1, \/2, \/4, \/8<\/td>\n<\/tr>\n
Accuracy (A grade)<\/td>\n1% max over temp<\/td>\n<\/tr>\n
I2C Addresses<\/td>\n16 programmable<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n3V to 5.5V<\/td>\n<\/tr>\n
Supply Current<\/td>\n1 mA max<\/td>\n<\/tr>\n
CMRRR<\/td>\n100 dB min<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-8 (DCN)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +125 C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Measures current, voltage, and power<\/li>\n
  • Programmable PGA with 4 gain settings<\/li>\n
  • 16 programmable I2C addresses<\/li>\n
  • Calibration register for direct ampere readout<\/li>\n
  • Programmable conversion time and filtering<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Server and telecom power monitoring<\/li>\n
    • Battery charger current measurement<\/li>\n
    • Notebook computer power management<\/li>\n
    • Industrial power supply monitoring<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The INA219AIDCNR from Texas Instruments is a 26V 12-bit I2C current\/power monitor with programmable PGA and calibration in SOT-23-8. Key Specifications Common-Mode Range 0V to 26V Resolution 12-bit ADC Shunt Voltage Range +\/-320mV (PGA \/8) PGA Gains \/1, \/2, \/4, \/8 Accuracy (A grade) 1% max over temp I2C Addresses 16 programmable Supply […]<\/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":[138],"class_list":["post-7643","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"26V current\/power monitor, I2C, 12-bit, SOT-23-8","date_code":"","package_case":"SOT-23-8 DCN (2.90 x 1.63 mm)","in_stock":35000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ina219.pdf","price":"$0.76 @ 1ku","product_introduction":"The INA219AIDCNR from Texas Instruments is a zero-drift bidirectional current\/power monitor with I2C interface in SOT-23-8. It measures both shunt voltage drop and bus supply voltage (0-26V), with a 12-bit ADC and programmable PGA providing +\/-320mV full-scale shunt range. The calibration register combined with an internal multiplier enables direct readout of current in amperes, and a power register provides wattage. The A grade offers 1% accuracy over temperature. 16 programmable I2C addresses allow multiple devices on the same bus.","working_principle":"The INA219AIDCNR operates as a digital current and power monitor. (1) The differential input measures the voltage across an external shunt resistor with 12-bit resolution (10uV LSB). The programmable PGA provides \/1, \/2, \/4, \/8 gain settings, enabling shunt ranges from +\/-40mV to +\/-320mV. The bus voltage input measures the common-mode voltage (0-26V) with 4mV LSB. (2) The calibration register sets the current LSB based on the shunt resistance and desired measurement range. The internal multiplier computes current = shunt_voltage x calibration_value, and power = current x bus_voltage. This eliminates the need for the host MCU to perform floating-point calculations. (3) The I2C\/SMBus interface provides access to six registers: Configuration, Shunt Voltage, Bus Voltage, Power, Current, and Calibration. Programmable conversion times (84us to 586us) and averaging (1 to 128 samples) allow trading speed for noise reduction. The 16 address options are set by A0 and A1 pins tied to GND, VS, SDA, or SCL.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>A0<\/td>I2C address select 0<\/td><\/tr>
      2<\/td>A1<\/td>I2C address select 1<\/td><\/tr>
      3<\/td>SDA<\/td>I2C data (open drain)<\/td><\/tr>
      4<\/td>SCL<\/td>I2C clock<\/td><\/tr>
      5<\/td>GND<\/td>Ground<\/td><\/tr>
      6<\/td>VS<\/td>Power supply (3-5.5V)<\/td><\/tr>
      7<\/td>IN+<\/td>Shunt positive input<\/td><\/tr>
      8<\/td>IN-<\/td>Shunt negative input<\/td><\/tr><\/table>","application_scenarios":"
      • Server and telecom power monitoring with direct ampere\/watt readout<\/li>
      • Battery charger current measurement with 0-26V common mode<\/li>
      • Notebook computer power management with 16 I2C addresses<\/li>
      • Industrial power supply monitoring with programmable PGA<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        INA219BIDCNR<\/td>TI<\/td>B grade, 0.5% accuracy<\/td><\/tr>
        INA226AIDGKR<\/td>TI<\/td>16-bit, alert pin, VSSOP-10<\/td><\/tr>
        PAC1710-1-AIA-TR<\/td>Microchip<\/td>Single supply, I2C<\/td><\/tr>
        MAX17048GT+T<\/td>ADI<\/td>Fuel gauge, I2C<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7643","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=7643"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7643\/revisions"}],"predecessor-version":[{"id":7682,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7643\/revisions\/7682"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7643"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7643"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7643"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7643"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}