<!-- Bootstrap core CSS --> <link href="/css/www-style.css" rel="stylesheet"> <link href="/css/bootstrap.css" rel="stylesheet"> <link href="/css/newsletter.css" rel="stylesheet"> <link href="/css/alfontawesome-all.css" rel="stylesheet"> <!-- Custom fonts for this template --> <section> <div class="key-container"> <div class="cus-content-subscribe"> <div class="row no-gutters"> <div class=" col-md-12"> <div class="page-header"> <a class="cus-btn btn-sm" href="https://www.richtek.com/My Richtek/Newsletters.aspx"><i class="fas fa-envelope"></i>&nbsp;&nbsp;Subscribe to Richtek Newsletter</a> </div> </div> </div> </div> </div> <div class="key-container pb-5"> <!-- Title start --> <div class="cus-content"> <div class="row no-gutters "> <div class="col-md-12 "> <div class="page-header"> <h1 class="font-weight-bold">Current Sense Amplifiers: Essential Components for Sustainable Development</h1> <i class="far fa-calendar-alt date-i"></i> <span class="ml-2 date">FEB. 10, 2025 | Newsletter Issue 50</span> </div> </div> </div> </div> <!-- Content End --> <div class="cus-content"> <div class="row no-gutters "> <div class="col-md-12 mb-20 text-center"> <a href="https://youtu.be/f_n5AIYTm50?&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"> <img class="img-center " style="max-width:600px;" alt="Current Sense Amplifiers: Essential Components for Sustainability" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_EDM_video.jpg"></a> </div> <div class="col-md-12 mb-40"> <p>The demand for current sense amplifiers is experiencing rapid growth, increasing at an annual rate of 10% due to the expansion of 5G telecom equipment and automotive applications, alongside global initiatives for carbon emissions reduction. The market size is projected to reach USD 2 billion by next year. Current sense amplifiers are crucial for preventing overcurrent, monitoring ground faults, and optimizing power control, thereby enhancing energy efficiency, and reducing environmental impact. This makes it one of the key components for sustainable development.</p> </div> <div class="col-md-12 "> <div class="mb-2"> <div class="section-title font-weight-bold mb-30" >What is Current Sense Amplifier?</div> </div> </div> <div class="col-md-6 "> <img class="img-center " style="max-width:600px;" alt="What is Current Sense Amplifier?" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_I50_01_EN.jpg"> </div> <div class="col-md-6 d-flex align-items-center justify-content-center "> <p>Current sense amplifiers, which are high-precision differential amplifiers specially designed for current sensing, measure small voltage drops across a shunt resistor and the output voltage correlates with the input current across the sense resistor. They offer simple operation, noise immunity, and accurate current measurements, providing critical control for system designs and protection against overheating and short circuits. </p> </div> <div class="col-md-12 "> <div class="mb-2"> <div class="section-title font-weight-bold mb-30" >Selection Criteria and Design Tips</div> </div> </div> <div class="col-md-12 "> <p>Current sense amplifiers are categorized into digital and analog types. Analog types deliver real-time analog output, ideal for applications requiring instantaneous response. Digital types offer diverse parameter reporting, including voltage, current, and power, and communicate with microcontrollers via communication interfaces, such as I²C or SMBus for effective power monitoring. Key performance indicators such as offset error and gain error are vital when selecting a suitable amplifier. How to calculate the optimal sense resistor to minimize measurement errors and improve accuracy? Discover Richtek's current sense amplifier product roadmap.</p> </div> <div class="col-md-12 mb-20 text-center"> <a href="https://www.youtube.com/watch?v=C2Y-je8YrZE&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"> <img class="img-center " style="max-width:600px;" alt="Current Sense Amplifiers: Essential Components for Sustainability" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_I50_design_video_1.jpg"></a> <p class="pt-4">（<a href="https://www.youtube.com/watch?v=C2Y-je8YrZE&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"><span style="color: #37a6d9;text-decoration: none;">00:00</span></a> What is Current Sense Amplifier? / <a href="https://www.youtube.com/watch?v=C2Y-je8YrZE#t=3m55s&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"><span style="color: #37a6d9;text-decoration: none;">03:55</span></a> Selection Criteria and Design Tips )</p> </div> <div class="col-md-12 mb-40 text-center"> <p><b>Digital Current Sense Amplifier</b></p> </div> <div class="col-md-12 text-center"> <div class=" row justify-content-center"> <table class="table " style="width: 600px;"> <thead class="thead-light"> <tr> <th scope="col" style="padding: 5px 5px;">Product Number</th> <th scope="col">Offset Error(max)</th> <th scope="col">Gain Error(max)</th> <th scope="col">Sense Voltage Input Range</th> </tr> </thead> <tbody> <tr> <th scope="row"><a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6059&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;">RTQ6059</a> <!--<a href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCsB2AjANhAXQL5A" target="_blank"><img alt="Buy-on-Line" border="0" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_ic-cart.png" width="40px;" style="width: 40px;padding-left: 0.5rem;"></a>--></th> <td>50µV</td> <td>0.30%</td> <td>Programmable</td> </tr> <tr> <th scope="row"><a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6056&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;">RTQ6056</a> <!--<a href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCsB2AjANhAXQL5A" target="_blank"><img alt="Buy-on-Line" border="0" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_ic-cart.png" width="40px;" style="width: 40px;padding-left: 0.5rem;"></a>--></th> <td>10µV</td> <td>0.12%</td> <td>Fixed</td> </tr> <tr> <th scope="row"><a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6053&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;">RTQ6053</a> <!--<a href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCsB2AjANhAXQL5A" target="_blank"><img alt="Buy-on-Line" border="0" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_ic-cart.png" width="40px;" style="width: 40px;padding-left: 0.5rem;"></a>--></th> <td>25µV</td> <td>0.30%</td> <td>Fixed</td> </tr> </tbody> </table> </div> </div> <div class="col-md-12 mb-20 text-center"> <p><b>Analog Current Sense Amplifier</b></p> </div> <div class="col-md-12 text-center"> <div class=" row justify-content-center"> <table class="table " style="width: 600px;"> <thead class="thead-light"> <tr> <th scope="col" style="padding: 5px 5px;">Product Number</th> <th scope="col">Offset Error(max)</th> <th scope="col">Gain Error(max)</th> <th scope="col">Voltage Gain</th> </tr> </thead> <tbody> <tr> <th scope="row"><a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;">RTQ6052</a> <!--<a href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCsB2AjANhAXQL5A" target="_blank"><img alt="Buy-on-Line" border="0" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_ic-cart.png" width="40px;" style="width: 40px;padding-left: 0.5rem;"></a>--></th> <td>2.5mV</td> <td>1%</td> <td>100V/V</td> </tr> <tr> <th scope="row"><a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank" style="text-decoration: none; color: #37a6d9;">RTQ6050</a> <!--<a href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCsB2AjANhAXQL5A" target="_blank"><img alt="Buy-on-Line" border="0" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_ic-cart.png" width="40px;" style="width: 40px;padding-left: 0.5rem;"></a>--></th> <td>2.5mV</td> <td>1%</td> <td>20V/V</td> </tr> </tbody> </table> </div> </div> </div> </div> <!-- Content End --> <!-- Product Tittle start --> <div class="cus-content"> <div class="row no-gutters"> <div class="col-md-12 pt-3"> <div class="new-product"> <h3 class="font-weight-bold">FEATURED PRODUCTS</h3> <p>Check out the products that meet your area of interest for more information</p> <p class="text-info font-weight-bold"> ▸ Digital Current Sense Amplifiers </p> </div> </div> </div> <!-- Product start --> <div class="row no-gutters align-items-center pb-4"> <div class="col-4 col-sm-4 col-md-4 col-lg-4 col-xl-2"> <div> <a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6059&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"><img class="img-fluid py-5 mx-auto" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_I50-p1-2.jpg" alt="RTQ6059"></a> </div> </div> <!-- img close --> <div class="col-8 col-sm-8 col-md-8 col-lg-8 col-xl-10"> <div class="new-block"> <div class="section-title">RTQ6059 ^{<span class="badge rounded-pill bg-warning text-light"><small>New</small></span>}</div> <span class="text-danger">High-Side or Low-Side Measurement, Bi-Directional Current and Power Monitor with 12 Bit ADC and Alert</span> <p> The RTQ6059 is a bi-directional current and power monitor with a 12-bit ADC and alert function. It features programmable gain function, a low offset error of 50μV, and a low gain error of 0.3%, ensuring accurate monitoring of load current and power consumption for precise system data.</p> <div><a class="btn-sm btn-outline-light link py-2 px-3 border mr-2" href="https://www.richtek.com/RedirectToProduct?specid=RTQ6059&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">See RTQ6059</a><a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.richtek.com/SaveDownload.aspx?specid=RTQ6059&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Download Datasheet</a> <a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCKA2ADAVgJwgLoF8g&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Buy-on-Line </a> </div> </div> </div> <!-- content close --> </div> <!-- Product close --> <!-- Product start --> <div class="row no-gutters align-items-center pb-4"> <div class="col-4 col-sm-4 col-md-4 col-lg-4 col-xl-2"> <div> <a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6056&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"><img class="img-fluid py-5 mx-auto" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_I50-p2-2.jpg" alt="RTQ6056"></a> </div> </div> <!-- img close --> <div class="col-8 col-sm-8 col-md-8 col-lg-8 col-xl-10"> <div class="new-block"> <div class="section-title">RTQ6056 </div> <span class="text-danger">High-Side or Low-Side Measurement, Bi-Directional Current and Power Monitor with 16 Bit ADC and Alert</span> <p> The RTQ6056 is a bi-directional current and power monitor with a 16-bit ADC and alarm function. It features a lower offset error of 10μV, and a lower gain error of 0.12%, ensuring accurate monitoring of load current and power consumption for precise system data.</p> <div><a class="btn-sm btn-outline-light link py-2 px-3 border mr-2" href="https://www.richtek.com/RedirectToProduct?specid=RTQ6056&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">See RTQ6056</a><a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.richtek.com/SaveDownload.aspx?specid=RTQ6056&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Download Datasheet</a> <a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCKA2ADAVhSAugXyA&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Buy-on-Line </a> </div> </div> </div> <!-- content close --> </div> <!-- Product close --> <!-- Product start --> <div class="row no-gutters align-items-center pb-4"> <div class="col-4 col-sm-4 col-md-4 col-lg-4 col-xl-2"> <div> <a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6053&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"><img class="img-fluid py-5 mx-auto" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_I50-p3-2.jpg" alt="RTQ6053"></a> </div> </div> <!-- img close --> <div class="col-8 col-sm-8 col-md-8 col-lg-8 col-xl-10"> <div class="new-block"> <div class="section-title">RTQ6053</div> <span class="text-danger">High-Side or Low-Side Measurement, Bi-Directional Current and Power Monitor with 16 Bit ADC and Alert</span> <p> The RTQ6053 is a bi-directional current and power monitor with a 16-bit ADC and alarm function. It features a lower offset error of 25μV, and a lower gain error of 0.3%, ensuring accurate monitoring of load current and power consumption for precise system data.</p> <div><a class="btn-sm btn-outline-light link py-2 px-3 border mr-2" href="https://www.richtek.com/RedirectToProduct?specid=RTQ6053&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">See RTQ6053</a><a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.richtek.com/SaveDownload.aspx?specid=RTQ6053&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Download Datasheet</a> <a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCKA2ADAVgMwgLoF8g&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Buy-on-Line </a> </div> </div> </div> <!-- content close --> </div> <!-- Product close --> <div class="row no-gutters"> <div class="col-md-12 pt-3"> <div class="new-product"> <p class="text-info font-weight-bold"> ▸ Analog Current Sense Amplifiers</p> </div> </div> </div> <!-- Product start --> <div class="row no-gutters align-items-center pb-4"> <div class="col-4 col-sm-4 col-md-4 col-lg-4 col-xl-2"> <div> <a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"><img class="img-fluid py-5 mx-auto" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_I50-p4-2.jpg" alt="RTQ6052"></a> </div> </div> <!-- img close --> <div class="col-8 col-sm-8 col-md-8 col-lg-8 col-xl-10"> <div class="new-block"> <div class="section-title">RTQ6052</div> <span class="text-danger">High-Side Measurement Current Shunt Monitor with Comparator</span> <p> The RTQ6052 is a high-side current sense amplifier with voltage output and an integrated comparator. It offers a 100V/V gain, a 2.5mV offset error, and a gain error under 1%, providing precise current monitoring across a 2V to 80V common-mode voltage range. </p> <div><a class="btn-sm btn-outline-light link py-2 px-3 border mr-2" href="https://www.richtek.com/RedirectToProduct?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">See RTQ6052</a><a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.richtek.com/SaveDownload.aspx?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Download Datasheet</a> <a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCKA2ADAVggXQL5A&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Buy-on-Line </a> </div> </div> </div> <!-- content close --> </div> <!-- Product close --> <!-- Product start --> <div class="row no-gutters align-items-center pb-4"> <div class="col-4 col-sm-4 col-md-4 col-lg-4 col-xl-2"> <div> <a href="https://www.richtek.com/RedirectToProduct?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank"><img class="img-fluid py-5 mx-auto" src="/content/dam/richtek-eds/resources/tech-insights/news/newsletter-issue-50/html-images/en_I50-p4-2.jpg" alt="RTQ6050"></a> </div> </div> <!-- img close --> <div class="col-8 col-sm-8 col-md-8 col-lg-8 col-xl-10"> <div class="new-block"> <div class="section-title">RTQ6050</div> <span class="text-danger">High-Side Measurement Current Shunt Monitor with Comparator</span> <p> The RTQ6050 is a high-side current sense amplifier with voltage output and an integrated comparator. It offers a 20V/V gain, a 2.5mV offset error, and a gain error under 1%, providing precise current monitoring across a 2V to 80V common-mode voltage range.</p> <div><a class="btn-sm btn-outline-light link py-2 px-3 border mr-2" href="https://www.richtek.com/RedirectToProduct?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">See RTQ6050</a><a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.richtek.com/SaveDownload.aspx?specid=RTQ6050/RTQ6052&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Download Datasheet</a> <a class="btn-sm btn-outline-light link py-2 px-3 border" href="https://www.digikey.com/en/products/result?s=N4IgTCBcDaIEoBUCKA2ADAVjSAugXyA&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en" target="_blank">Buy-on-Line </a> </div> </div> </div> <!-- content close --> </div> <!-- Product close --> <!-- Keywords start --> <div class="tag-content"> <div class="row no-gutters"> <div class="col-md-12 mb-40"> <div class="new-product"> <p>Want to keep up to date with all our latest news and information? <a class="link" href="https://www.richtek.com/My Richtek/Newsletters.aspx" target="_blank">Subscribe here!</a></p> </div> </div> </div> <div class="row no-gutters align-items-start"> <div class="col-12"> <a class="badge btn-tag" href="https://www.richtek.com/Products/Operational%20Amplifier?&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en">Amplifiers</a> <a class="badge btn-tag" href="https://www.richtek.com/applications/communication-enterprise/data-center?&ActiveTab=Data Center&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en">Data Center</a> <a class="badge btn-tag" href="https://www.richtek.com/applications/automotive?&ActiveTab=Notebooks&utm_source=Newsletter&utm_medium=RTWWW&utm_campaign=Issue50EN&sc_lang=en">Automotive & e-Mobility</a> </div> </div> </div> </div> </div> </section>

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