{"id":6896,"date":"2026-06-22T01:57:14","date_gmt":"2026-06-22T01:57:14","guid":{"rendered":"https:\/\/materialparts.com\/iso124u\/"},"modified":"2026-06-22T01:57:14","modified_gmt":"2026-06-22T01:57:14","slug":"iso124u","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/iso124u\/","title":{"rendered":"ISO124U"},"content":{"rendered":"

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

The ISO124U from Texas Instruments is a precision isolation amplifier with 1500Vrms continuous isolation, 0.01% nonlinearity, and 50kHz bandwidth in a DIP-24 package.<\/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
\u0627\u0644\u0646\u0648\u0639<\/td>\nPrecision Isolation Amplifier<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0639\u0632\u0644<\/td>\n1500 Vrms (continuous)<\/td>\n<\/tr>\n
Gain<\/td>\n1 V\/V (fixed)<\/td>\n<\/tr>\n
Gain Accuracy<\/td>\n+\/-0.5% (max)<\/td>\n<\/tr>\n
Nonlinearity<\/td>\n+\/-0.01% (max)<\/td>\n<\/tr>\n
Bandwidth<\/td>\n50 kHz<\/td>\n<\/tr>\n
Isolation Rejection<\/td>\n140 dB @ 60 Hz<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n+\/-4.5V to +\/-18V (each side)<\/td>\n<\/tr>\n
Isolation Capacitance<\/td>\n2.2 pF (typical)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nDIP-24 (0.600 inch width)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-25C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 1500Vrms continuous isolation rating<\/li>\n
  • Fixed unity gain with 0.5% accuracy<\/li>\n
  • 0.01% maximum nonlinearity<\/li>\n
  • 50kHz signal bandwidth<\/li>\n
  • 140dB isolation rejection at 60Hz<\/li>\n
  • Dual independent supply rails (+\/-4.5V to +\/-18V)<\/li>\n
  • 2.2pF isolation capacitance<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Medical ECG\/EEG isolation<\/li>\n
    • Industrial process control isolation<\/li>\n
    • Motor current sensing isolation<\/li>\n

Data acquisition front-end isolation<\/td>\n<\/tr>\n<\/table><\/ul>","protected":false},"excerpt":{"rendered":"

Product Overview The ISO124U from Texas Instruments is a precision isolation amplifier with 1500Vrms continuous isolation, 0.01% nonlinearity, and 50kHz bandwidth in a DIP-24 package. Key Specifications Type Precision Isolation Amplifier Isolation Voltage 1500 Vrms (continuous) Gain 1 V\/V (fixed) Gain Accuracy +\/-0.5% (max) Nonlinearity +\/-0.01% (max) Bandwidth 50 kHz Isolation Rejection 140 dB @ […]<\/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-6896","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Isolation Amplifier, 1500Vrms, 0.01% NL, 50kHz, DIP-24","date_code":"","package_case":"DIP-24 (0.600 inch \/ 15.24mm width)","in_stock":1234,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/iso124.pdf","price":"$8.50 @ 1ku","product_introduction":"The ISO124U from Texas Instruments (originally Burr-Brown) is a precision isolation amplifier that provides galvanic isolation between input and output with 1500Vrms continuous rating. The device achieves 0.01% maximum nonlinearity through a duty-cycle modulation-demodulation scheme, where the input voltage is converted to a pulse-width modulated signal, transmitted across the isolation barrier via an internal transformer, and demodulated on the output side. The fixed unity gain (1 V\/V) with 0.5% accuracy simplifies the signal path without external gain-setting components. The 50 kHz bandwidth supports most industrial and medical sensing applications. The 140 dB isolation rejection at 60 Hz eliminates power-line interference in sensitive measurements. The DIP-24 package provides wide creepage and clearance distances for high-voltage isolation. The dual independent supply rails allow the input and output sides to be powered from different sources.","working_principle":"The ISO124U uses a duty-cycle modulation technique to transmit analog signals across the isolation barrier. On the input side, the input voltage is compared against a 500 kHz triangular wave in a PWM modulator, producing a pulse-width modulated digital signal whose duty cycle is proportional to the input voltage. This digital signal is transmitted through an internal planar transformer that provides the galvanic isolation barrier. On the output side, a demodulator reconstructs the analog signal by filtering the PWM signal with a 2nd-order low-pass filter. The 50 kHz bandwidth is determined by the output filter cutoff frequency. The 0.01% nonlinearity is achieved because the PWM modulation is inherently linear - the duty cycle is directly proportional to the input voltage with high precision. The isolation characteristics are determined by the transformer: 1500Vrms continuous rating, 2.2pF coupling capacitance, and 140dB isolation rejection at 60 Hz. The transformer's high magnetizing inductance and low inter-winding capacitance ensure signal integrity while maintaining safety isolation.","pin_description":"
Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
1<\/td>VIN+<\/td>Input<\/td>Non-inverting signal input<\/td><\/tr>
2<\/td>VIN-<\/td>Input<\/td>Inverting signal input<\/td><\/tr>
3<\/td>V+IN<\/td>Power<\/td>Input side positive supply<\/td><\/tr>
4<\/td>V-IN<\/td>Power<\/td>Input side negative supply<\/td><\/tr>
5<\/td>COM IN<\/td>Power<\/td>Input side common (ground)<\/td><\/tr>
6,7<\/td>NC<\/td>-<\/td>No connect<\/td><\/tr>
8<\/td>OSC<\/td>Output<\/td>Internal oscillator output (decouple)<\/td><\/tr>
9<\/td>COM OUT<\/td>Power<\/td>Output side common (ground)<\/td><\/tr>
10<\/td>V-OUT<\/td>Power<\/td>Output side negative supply<\/td><\/tr>
11<\/td>V+OUT<\/td>Power<\/td>Output side positive supply<\/td><\/tr>
12<\/td>VOUT<\/td>Output<\/td>Isolated output voltage<\/td><\/tr><\/table>","application_scenarios":"
  • Medical ECG front-end with 1500Vrms patient isolation and 0.01% linearity<\/li>
  • Industrial 4-20mA current loop receiver with 140dB 60Hz rejection<\/li>
  • Motor phase current sensing with high-side shunt and isolated output<\/li>
  • Data acquisition system channel-to-channel isolation with 50kHz bandwidth<\/li><\/ul>","alternative_models":"
    Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
    TI<\/td>ISO124P<\/td>DIP-24<\/td>Wider temperature range version<\/td><\/tr>
    TI<\/td>AMC1301DWVR<\/td>SOIC-8<\/td>Isolated current-sense amplifier, newer<\/td><\/tr>
    ADI<\/td>AD202JN<\/td>DIP-24<\/td>Isolation amplifier, alternative<\/td><\/tr>
    TI<\/td>ISO224<\/td>SOIC-16<\/td>Isolated amplifier, newer, smaller<\/td><\/tr>
    Silicon Labs<\/td>Si8920B-IS<\/td>SOIC-8<\/td>Isolated current sense, digital output<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6896","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=6896"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6896\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6896"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6896"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}