摘要：在對數放大器應用中，直流對數放大器在壓縮傳感器信號動態范圍的應用中仍然占據主導地位，是一種高性價比的解決方案。本文推導了直流對數放大器的傳輸函數，從雙極...

Abstract: The combination of an ultra low supply current, comparator plus reference (MAX971) and photodiode are used to detect infrared (IrDA) signals for TV remote control, etc. RC filters reduce ambient light noise and AC mains hum. The ...

Abstract: Using a preamp to increase the output magnitude of a J-type thermocoupler. The simple circuit provides compensation over temperature as well as calibration capability. The MAX430 is operated at a gain of 191 to ...

Abstract: This design idea describes a simple circuit that converts a 4-20mA signal to a 0V to 5V analog voltage ideal for conversion to digital with an analog-to-digital converter (ADC). The 4mA level from the transducer produces a 0V out...

Abstract: This application note discusses the operating concepts behind temperature sensor ICs and introduces the MAX1617, the first temperature sensor IC to measure the temperature of a remote thermal diode which allows accurate monitorin...

Abstract: Sensors that use thin-film or thick-film strain gauge technology typically require high-gain signal conditioning. For typical applications where signal gain of less than 250V/V is sufficient, any of the high precision signal cond...

Abstract: This article shows an example of implementing a 4-20mA or 0-20mA current-loop output using a voltage output digital-to-analog converter (DAC) and a V to I converter. Current-loop signals, as opposed to voltage s...

Abstract: Described circuit provides a thermal output from a piezofilm transducer. The circuit is a high-input-impedance differential charge amplifier using three op amps in a somewhat classical instrumentation amplifier configuration. The...

Abstract: This application note explains 4-20mA current loops and intelligent transmitters and explains their need for high-resolution low-power DACs. An optimum power-supply chip is not the only critical choice to be mad...

PWM輸出提高傳感器...

Abstract: A PIN photodiode, four low-noise op amps and a comparator are used to detect individual photons of gamma radiation. The schematic, design considerations and component selection are discussed. The circuit of Figu...

摘要：在典型的光電二極管電流監測應用中，電流監測器和雪崩光電二極管(APD)之間的壓降隨溫度和電流而變化，由此改變了總增益。本應用筆記介紹了一種利用穩壓電路保持電流檢...

摘要：本文介紹了如何使用一個零漂移精密儀表放大器，一對rejustor (電動可調無源電阻)和增益設置電阻實現高精度增益設計的方法。文中以精密儀表放大器MAX4208為例，介紹了應用...

Abstract: This article shows a simple technique to reduce the output noise of an autozero, indirect current-feedback instrumentation amplifier. The MAX4209 instrumentation amplifier serves as design example. A similar art...

Abstract: This article demonstrates how to achieve current limit for the MAX1692 PWM step-down regulator by using a MAX4173H current-sense amplifier. Additional Information: Quick View Data Sheet for the MAX16...

Abstract: This application notes describes a compact isolated switch-mode power supply that is capable of providing a 7A 3.3V output from a 40VDC–60VDC input at an efficiency of 83%–90%. The converter employs a MAX5052A current-mode PW...

Abstract: Combining low-on-resistance analog switches with a reference and ultra-low quiescent current comparator produces a discrete-component regulated charge pump that delivers 10mA, with only 7uA of quiescent current (Iq). ...

摘要：本文討論一個12V/50W的總線轉換器，它從48V總線轉換得到一個穩定、高效、隔離的12V輸出。用到的拓撲結構是帶同步整流的單開關正激轉換器。在此設計中MAX5003為PWM控制器，經...

摘要：本應用筆記介紹了MAX5072 DC-DC變換器―專為解決ADSL2+調制解調器的電源管理問題而設計的器件。還提供了有關升壓、降壓或升-降壓變換器的設計指南，并給出了經過驗證的電路...

Abstract: A high-voltage bias supply for a Geiger-Mueller tube features small size and low power consumption. Many portable radiation monitors include a Geiger-Mueller tube, a simple, two-terminal, gas-filled detector tha...