Abstract: This application note describes methods of protecting lower-voltage current sense amplifiers from high-voltage spikes and transients. Such conditions are frequently encountered in automotive ......
摘要：电压基准源简单、稳定的基准电压，作为电路设计的一个关键因素，电压基准源的选择需要考虑多方面的问题并作出折衷。本文讨论了不同类型的电压基准源以及它们的关键特性和设计中需要考虑的问题，如精确度、受温度的影响 ......
Abstract: This article provides an in depth analysis, procedure, and selection tables for selecting the optimum series voltage reference for voltage output DACs. It covers all of the important paramet ......
Variable gain amplifiers often use a mechanical potentiometer to set the gain. An example is a volume control dial. However, when the analog signal path is digitally controlled, a digital potentiomete ......
Abstract: In some electronic systems, a DC offset voltage at the inputs will contribute a significant error to the output. This is especially true in high gain configurations. An offset adjustment cir ......
In most DC-DC converters, the normal supply currents do not allow high efficiency at low load currents. The circuit in Figure 1, however, contains micropower components that enable it to maintain 90% ......
P-channel MOSFETs (pFETs), though more expensive than pnp transistors, are free of the dissipation loss associated with base drive in a pnp circuit. pFETs also have a lower saturation voltage at light ......
Abstract: A simple circuit employs a small transformer and latched comparator to sense the state of a digital line without drawing power from the line. Electronic systems must often isolate their inpu ......
Abstract: A simple circuit consisting of a comparator and an exclusive-OR gate is sufficient to double the frequency of a reference signal. The versatile phase-locked loop (PLL) allows multiplication ......
摘要：本文介绍了一个简单、具有快速响应时间的过流故障检测器，用于低压系统的电路保护。该方案与专用的热插拔控制器不同，专用的热插拔控制器跳出欠压状态后往往具有较长的启动延时，而本文介绍的电路在输入电压超过2.7V后 ......
Portable systems often use LEDs of different colors-white for the display backlight, green for keypad illumination, red for power, etc., and in varying quantities of each. Typically the LEDs are drive ......
讨论了一种用于氩弧焊机的电源系统。该系统解决了现有焊接电源存在的引弧困难、电流控制精度低等问题；电源随工控机控制的给定焊接电流参数而变化，提高了设备的自动化程度，扩大了焊接参数的可调范围，降低了焊接电流硬件的 ......
摘要：ISDN、电信等系统需要一个负压电流检测放大器。本应用笔记介绍了一种设计负压电流检测放大器的方法。这种方法非常灵活，经过简单修改即可用于不同的负压电流检测。本文采用MAX4460单电源仪表放大器进行设计。
概 ......
摘要：在典型的光电二极管电流监测应用中，电流监测器和雪崩光电二极管(APD)之间的压降随温度和电流而变化，由此改变了总增益。本应用笔记介绍了一种利用稳压电路保持电流检测器和APD固定压降的方法，有助于解决上述问题。
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摘要：一直以来，三运放仪表放大器作为工业标准被用于那些要求高增益和/或高CMRR的精密应用场合。然而，当此类放大器工作在当前绝大多数应用所要求的单电源供电系统时，存在较大的局限性。本文阐述了传统的三运放仪表放大器 ......
Abstract: The "Deboo" Integrator simplifies the use of single-supplies by ground-referencing both the input and the output. The design of standard inverting integrators is simple when bipolar suppli ......
Abstract: Simple level shifting circuit using a precision op amp tracks small DC voltage changes. When we want to capture a low level, long duration signal riding on a much higher DC level, we need to ......
