This week's highlights

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What is PSRR?

PSRR (Power supply rejection ratio) is also known as the power supply rejection ratio. It is an important parameter to measure the ripple rejection of the input power supply by the circuit. It is expressed as the logarithmic ratio of the output ripple to the input ripple in decibels (dB) [1]. The calculation formula is:

Where:

: Peak-to-peak value of ripple in input voltage

[img]https://e2echi na.ti.com/resized-image/__size/1230x0/__key/communityserver-blogs-components-weblogfiles/00-00-00-01-02/2018_2D00_02_2D00_28_5F00_134018.png[/i mg]: Peak-to-peak ripple in output voltage

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How to Select the Right Integrated ADC for Your Sensing Application A Google search for the term “analog-to-digital converter selection” yields thousands of search results, proving that this task remains challenging for many involved in designing sensing solutions. After all, there are a plethora of analog-to-digital converter (ADC) solutions, from simple 10-bit ADCs integrated into 8-bit microcontrollers (MCUs) to ADCs that can resolve at GHz rates. 〉〉〉Click for details How to design a printed circuit board for high-performance low-side current sensing designs In a previous blog post, I showed you how to control a motor with low-side current sensing and shared three steps to design a low-side current sensing circuit for cost-sensitive applications. In this post, I will show how to use applied printed circuit board (PCB) technology to design an accurate, low-cost low-side current sensing circuit using a tiny operational amplifier (Op amp). LM2662 voltage doubler output power supply noise[/url] Powered by computer USB, using the LM2662 voltage doubler classic circuit to output voltage, the noise measurement shows a square wave-like noise. How to reduce or eliminate it? 〉〉〉Click to view details 10/100M optical/electrical Ethernet chip recommendation Is there any 10/100M optical/electrical Ethernet chip recommendation? Support optical/electrical switching, industrial temperature, interface MII/RMII, thank you 〉〉〉Click to view details Ultrasonic distance measurement (pga460) Ultrasonic distance measurement is used in recent projects. I saw TI's PGA-460 and felt it was very practical. I want to use Murata's ultrasonic sensor MA58MF14-0N to match it. I don't know how this solution is and whether it is feasible. 〉〉〉Click to view details