Design guidelines for high frequency op amp comparators

Compared to DC voltage/very low frequency based comparator applications, high frequency comparator applications require additional parameters and considerations to provide better signal processing efficiency. As in DC voltage applications, in high frequency applications, op amps are used instead of comparators. However, during high frequency signal processing, op amps do not exhibit the same performance as […]

Read More

Simplify radio testing with stm32wb microcontroller

Stm32wb is a dual arm Cortex-M core MCU, which is a new equipment pillar. By emphasizing wireless connection, it complements the existing three pillars of STM32 series, which are high-performance, mainstream and ultra-low power consumption. In addition to the high-performance arm cortex-m4 core dedicated to application processing, these new STM32 MCU also integrates an independent […]

Read More

Hysteresis current control method based on cmpss

Foreword: In July this year, I wrote an article about the method of realizing current mode in digital control system, which can be seen in “thinking of realizing current mode control of LLC converter in digital control system”. In this article, it is mainly considered to use the resonant current integration of fan7688 of Xiantong […]

Read More

Operational amplifier of circuit design series

Introduction to operational amplifier Understand the working principle of operational amplifier What is the virtual short and virtual break of operational amplifier What is the saturation of operational amplifier? Relationship between output voltage and frequency of inverse proportional operational amplifier circuit What is the function of the parallel resistor on the operational amplifier integrating circuit? […]

Read More

Reasons why operational amplifiers cannot be used as comparators

Comparator is a device with two input terminals of inverting and in-phase and one output terminal. The output voltage range of the output terminal is generally between the power supply rail and rail. The same is true for operational amplifiers. At first glance, it seems interchangeable. In fact, there are some important differences between the […]

Read More

Design of 20 bit DAC in digital correction loop based on ltc400 device

introduction Recently, the digital to analog conversion technology with high precision and instrument level has made remarkable progress. Ten years ago, 12 bit to analog converter (DAC) was considered as a high-quality device. Nowadays, 16 bit DAC has been put on the market, and its application in system design is becoming more and more common. […]

Read More

Using precision comparator to solve the problem of precision voltage detection

Comparator is a widely used circuit element. In many cases, such as square pulse shaping circuit, the accuracy of voltage comparison is not very critical, and the voltage value can change in the range of hundreds of millivolts without affecting the circuit performance. However, many applications require very accurate comparison voltages, and these voltages require […]

Read More