{"id":6456,"date":"2026-06-16T03:53:18","date_gmt":"2026-06-16T03:53:18","guid":{"rendered":"https:\/\/materialparts.com\/ina828aidr\/"},"modified":"2026-06-16T03:53:18","modified_gmt":"2026-06-16T03:53:18","slug":"ina828aidr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ina828aidr\/","title":{"rendered":"INA828AIDR"},"content":{"rendered":"

Productos<\/h2>\n

The INA828AIDR is a high-precision instrumentation amplifier from Texas Instruments with 50\u00b5V max offset, 7nV\/\u221aHz noise, and 0.5\u00b5V\/\u00b0C offset drift \u2014 achieved through super-beta input transistors. With 140dB CMRR at G=10, \u00b140V input overvoltage protection, and only 650\u00b5A supply current, it is the second-generation upgrade to the classic INA128. The single-resistor gain range (1 to 1000) and 8-SOIC package suit precision industrial and medical applications.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tensi\u00f3n de offset de entrada<\/td>\n50 \u00b5V maximum<\/td>\n<\/tr>\n
Offset Drift<\/td>\n0.5 \u00b5V\/\u00b0C maximum<\/td>\n<\/tr>\n
Input Voltage Noise<\/td>\n7 nV\/\u221aHz @ 1kHz<\/td>\n<\/tr>\n
0.1-10Hz Noise<\/td>\n0.14 \u00b5Vp-p (G=1)<\/td>\n<\/tr>\n
CMRR (G=1)<\/td>\n90 dB minimum<\/td>\n<\/tr>\n
CMRR (G=10)<\/td>\n110 dB minimum<\/td>\n<\/tr>\n
PSRR (G=1)<\/td>\n100 dB minimum<\/td>\n<\/tr>\n
Gain Range<\/td>\n1 to 1000 (single resistor)<\/td>\n<\/tr>\n
Gain Drift<\/td>\n5 ppm\/\u00b0C (G=1); 50 ppm\/\u00b0C (G>1)<\/td>\n<\/tr>\n
Gain Error<\/td>\n\u00b10.15% maximum<\/td>\n<\/tr>\n
Gain Nonlinearity<\/td>\n\u00b10.002% maximum<\/td>\n<\/tr>\n
Corriente de polarizaci\u00f3n de entrada<\/td>\n0.6 nA maximum<\/td>\n<\/tr>\n
Bandwidth (G=1)<\/td>\n2 MHz<\/td>\n<\/tr>\n
Bandwidth (G=100)<\/td>\n260 kHz<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n4.5V to 36V (single); \u00b12.25V to \u00b118V (dual)<\/td>\n<\/tr>\n
Supply Current<\/td>\n650 \u00b5A maximum<\/td>\n<\/tr>\n
Input Overvoltage<\/td>\n\u00b140V protection<\/td>\n<\/tr>\n
Paquete<\/td>\n8-SOIC (4.9 x 3.9mm)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Super-beta input transistors for ultra-low noise and drift<\/li>\n
  • 50\u00b5V max offset \u2014 4x better than INA128<\/li>\n
  • 7nV\/\u221aHz input noise \u2014 industry-best for this class<\/li>\n
  • 140dB CMRR at G=10 for superior common-mode rejection<\/li>\n
  • \u00b140V input overvoltage protection without damage<\/li>\n
  • Stable with up to 1nF capacitive load<\/li>\n
  • Single external resistor sets gain from 1 to 1000<\/li>\n
  • 650\u00b5A max supply current \u2014 very low power<\/li>\n
  • Drop-in upgrade for INA128 (pin-compatible)<\/li>\n
  • 5V single-supply to \u00b118V dual-supply operation<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Industrial process control signal conditioning<\/li>\n
    • Medical ECG and biopotential amplifiers<\/li>\n
    • Precision data acquisition systems<\/li>\n
    • Battery tester and monitoring circuits<\/li>\n
    • Bridge and load cell amplifiers<\/li>\n
    • Power automation and metering<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The INA828AIDR is a high-precision instrumentation amplifier from Texas Instruments with 50\u00b5V max offset, 7nV\/\u221aHz noise, and 0.5\u00b5V\/\u00b0C offset drift \u2014 achieved through super-beta input transistors. With 140dB CMRR at G=10, \u00b140V input overvoltage protection, and only 650\u00b5A supply current, it is the second-generation upgrade to the classic INA128. The single-resistor gain range […]<\/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-6456","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"50\u00b5V offset, 7nV\/\u221aHz in-amp, 140dB CMRR, \u00b140V OVP, G=1-1000, 650\u00b5A, super-beta, 8-SOIC","date_code":"","package_case":"8-SOIC (4.9 x 3.9 x 1.5mm)","in_stock":5600,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ina828.pdf","price":"$2.63 @ 1ku","product_introduction":"The INA828AIDR is a second-generation high-precision instrumentation amplifier from Texas Instruments that significantly improves upon the classic INA128. Using super-beta input transistors, it achieves 50\u00b5V maximum input offset (4x better than INA128's 200\u00b5V), 7nV\/\u221aHz input noise density, 0.5\u00b5V\/\u00b0C offset drift, and only 0.6nA input bias current. The 140dB minimum CMRR at G=10 provides outstanding common-mode rejection in noisy industrial environments. Input protection circuitry tolerates \u00b140V overvoltage without damage. Gain is set from 1 to 1000 with a single external resistor using the standard G = 1 + (49.4k\u03a9\/RG) formula. The device is pin-compatible with the INA128, enabling direct upgrades in existing designs. Operating from 4.5V single supply to \u00b118V dual supplies with only 650\u00b5A supply current, it suits both portable and industrial applications.","working_principle":"The INA828 uses a three-op-amp instrumentation amplifier architecture with super-beta input transistors. The input stage consists of two matched transconductance amplifiers whose feedback current flows through the gain resistor RG. The gain formula is G = 1 + (49.4k\u03a9\/RG). The super-beta transistors provide extremely high current gain (\u03b2 > 1000), resulting in sub-nanoampere input bias currents and correspondingly low input-referred noise and offset. The output stage is a difference amplifier that converts the internal differential signal to a single-ended output referenced to the REF pin. The \u00b140V input protection uses back-to-back diodes and current-limiting resistors that clamp input voltages without affecting normal operation. The device is compensated to remain stable with up to 1nF of capacitive load on the output, allowing direct connection to ADC input networks without additional buffering. The reference pin enables output level shifting for single-supply applications.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>RG<\/td>Gain resistor terminal 1<\/td><\/tr>
      2<\/td>-IN<\/td>Inverting input<\/td><\/tr>
      3<\/td>+IN<\/td>Non-inverting input<\/td><\/tr>
      4<\/td>-VS<\/td>Negative supply (or GND for single supply)<\/td><\/tr>
      5<\/td>REF<\/td>Reference (output offset) input<\/td><\/tr>
      6<\/td>OUT<\/td>Amplifier output<\/td><\/tr>
      7<\/td>+VS<\/td>Positive supply (4.5V to 36V)<\/td><\/tr>
      8<\/td>RG<\/td>Gain resistor terminal 2<\/td><\/tr><\/table>","application_scenarios":"
      • Precision Bridge Amplifier:<\/b> Amplify a 10mV full-scale load cell output at G=1000 with 0.14\u00b5Vp-p low-frequency noise. The 140dB CMRR at G=10 (and increasing at higher gains) rejects ground-loop and electromagnetic interference from nearby motor drives. The 0.002% gain nonlinearity preserves measurement accuracy over the full load range. The REF pin shifts the output to mid-supply for single-supply ADC interfacing.<\/li>
      • ECG Front-End:<\/b> Amplify biopotential signals (0.5mV to 5mV) with G=500. The 7nV\/\u221aHz input noise yields a total input noise of only ~30nV\/\u221aHz at G=500, revealing subtle ECG features. The \u00b140V input protection handles defibrillator discharge events without damage. The 0.6nA bias current is low enough to not polarize wet ECG electrodes. The 90dB CMRR at G=1 (higher at G=500) rejects 50\/60Hz common-mode interference.<\/li>
      • 4-20mA Loop Current Sense:<\/b> Measure the voltage across a precision shunt in a 4-20mA loop. At G=100, the INA828 provides a 0.4-2V output from a 4-20mV shunt signal. The \u00b140V input protection handles loop fault voltages. The 0.5\u00b5V\/\u00b0C offset drift ensures stable zero readings over ambient temperature variations. The 100dB PSRR rejects power supply noise in industrial environments.<\/li><\/ul>","alternative_models":"
        Model<\/th>Offset<\/th>Noise<\/th>CMRR (G=10)<\/th>Key Difference<\/th><\/tr>
        INA128<\/td>50\u00b5V typ<\/td>10nV\/\u221aHz<\/td>120dB<\/td>First generation, higher noise<\/td><\/tr>
        INA826<\/td>50\u00b5V<\/td>22nV\/\u221aHz<\/td>90dB<\/td>Wider supply, lower CMRR<\/td><\/tr>
        AD8429BRZ<\/td>50\u00b5V<\/td>1nV\/\u221aHz<\/td>90dB<\/td>ADI, ultra-low noise, lower CMRR<\/td><\/tr>
        INA819<\/td>25\u00b5V<\/td>7nV\/\u221aHz<\/td>140dB<\/td>TI, even higher precision<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6456","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=6456"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6456\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6456"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6456"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6456"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6456"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}