{"id":7236,"date":"2026-06-23T07:51:01","date_gmt":"2026-06-23T07:51:01","guid":{"rendered":"https:\/\/materialparts.com\/ina117ku-2k5\/"},"modified":"2026-06-23T07:51:01","modified_gmt":"2026-06-23T07:51:01","slug":"ina117ku-2k5","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/ina117ku-2k5\/","title":{"rendered":"INA117KU\/2K5"},"content":{"rendered":"

Productos<\/h2>\n

The INA117KU\/2K5 from Texas Instruments is a precision unity-gain difference amplifier in a SOIC-8 package. With +\/-200V common-mode input range and high CMRR, it accurately measures small differential voltages in high-voltage environments.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n
Common-Mode Range<\/td>\n+\/-200 V (continuous)<\/td>\n<\/tr>\n
Gain<\/td>\n1 V\/V (unity)<\/td>\n<\/tr>\n
CMRR<\/td>\n86 dB (minimum)<\/td>\n<\/tr>\n
Bandwidth<\/td>\n200 kHz<\/td>\n<\/tr>\n
Tensi\u00f3n de offset de entrada<\/td>\n+\/-1 mV (maximum)<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n+\/-2.25 V to +\/-18 V<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • +\/-200V common-mode input range for high-side current sensing at any voltage<\/li>\n
  • 86dB minimum CMRR rejects common-mode noise and offset<\/li>\n
  • Unity-gain difference amplifier requires no external resistors<\/li>\n
  • +\/-1mV maximum input offset for accurate small-signal measurement<\/li>\n
  • 200kHz bandwidth for monitoring dynamic current waveforms<\/li>\n
  • Internal precision resistor network laser-trimmed for gain accuracy<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • High-side current sensing in power supplies and motor drives<\/li>\n
    • Battery cell voltage monitoring in stacked configurations<\/li>\n
    • Power supply output voltage and current measurement<\/li>\n
    • Industrial process control differential measurement<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The INA117KU\/2K5 from Texas Instruments is a precision unity-gain difference amplifier in a SOIC-8 package. With +\/-200V common-mode input range and high CMRR, it accurately measures small differential voltages in high-voltage environments. Key Specifications Common-Mode Range +\/-200 V (continuous) Gain 1 V\/V (unity) CMRR 86 dB (minimum) Bandwidth 200 kHz Input Offset Voltage […]<\/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":[13,47],"tags":[],"chip_brand":[138],"class_list":["post-7236","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-proximity-sensors","chip_brand-ti"],"acf":{"brief_explanation":"Unity-gain diff amp, +\/-200V CM, 86dB CMRR, SOIC-8, high-side current sensing, precision","date_code":"","package_case":"SOIC-8 (4.90 x 3.90 x 1.37 mm)","in_stock":3546,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/ina117.pdf","price":"$3.80 @ 1ku","product_introduction":"The INA117KU\/2K5 from Texas Instruments is a precision unity-gain difference amplifier in a SOIC-8 package, specifically designed for measuring small differential voltages in the presence of extremely high common-mode voltages. The +\/-200V continuous common-mode input range enables direct measurement of shunt resistor voltages in high-voltage circuits such as 48V power supplies, motor drives, and stacked battery packs, without the need for voltage dividers or isolation amplifiers. The 86dB minimum common-mode rejection ratio ensures that common-mode voltage changes do not corrupt the differential measurement. The internal laser-trimmed thin-film resistor network provides a precise unity gain (1V\/V) with no external components required. The +\/-1mV maximum input offset voltage over temperature ensures accurate measurement of small shunt voltages. The 200kHz bandwidth supports monitoring of dynamic current waveforms in switching power supplies and motor drives. The dual supply operation (+\/-2.25V to +\/-18V) is compatible with standard op-amp supply rails, and the output swings to within 1.5V of the supply rails.","working_principle":"The INA117KU\/2K5 uses an internal precision resistor network to implement a difference amplifier. (1) Resistor Network: Four precision thin-film resistors form two voltage dividers that attenuate both the non-inverting and inverting inputs. The resistor ratios are laser-trimmed to exact values so that common-mode voltages are attenuated equally at both inputs, while the differential voltage is preserved with unity gain. (2) Differential Amplification: The op-amp amplifies only the difference between the two attenuated input voltages. The output voltage equals VOUT = (VIN+ - VIN-), the same as the differential input voltage. (3) Common-Mode Rejection: The high CMRR (86dB minimum) is achieved by precise matching of the resistor ratios. Any mismatch would cause a portion of the common-mode voltage to appear as a differential signal at the op-amp input. Laser trimming ensures the ratios match within 0.005%. (4) High-Voltage Operation: The input resistors (approximately 380kOhm each) limit the input current to safe levels even at +\/-200V common-mode, while the resulting voltage drops are compensated by the matched network.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VIN-<\/td>Input<\/td>Inverting input (high-voltage)<\/td><\/tr>
      2<\/td>VIN+<\/td>Input<\/td>Non-inverting input (high-voltage)<\/td><\/tr>
      3<\/td>V+<\/td>Power<\/td>Positive supply<\/td><\/tr>
      4<\/td>V-<\/td>Power<\/td>Negative supply<\/td><\/tr>
      5<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr>
      6<\/td>OUTPUT<\/td>Output<\/td>Amplified output<\/td><\/tr>
      7,8<\/td>NC<\/td>-<\/td>No connect (internal resistor connections)<\/td><\/tr><\/table>","application_scenarios":"
      • High-side current sensing in power supplies and motor drives at +\/-200V<\/li>
      • Battery cell voltage monitoring in stacked configurations with 86dB CMRR<\/li>
      • Power supply output voltage and current measurement with unity gain<\/li>
      • Industrial process control differential measurement at +\/-1mV offset<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>INA148UA<\/td>SOIC-8<\/td>+\/-200V, similar function<\/td><\/tr>
        ADI<\/td>AD629ARZ<\/td>SOIC-8<\/td>+\/-270V CM, higher range<\/td><\/tr>
        TI<\/td>INA149AIDR<\/td>SOIC-8<\/td>+\/-275V CM, upgraded<\/td><\/tr>
        TI<\/td>INA132UA<\/td>SOIC-8<\/td>+\/-40V CM, lower range<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7236","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=7236"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7236\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=7236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=7236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=7236"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}