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Linear公司的运算放大器，种类虽没有ADI或MAXIM那么多，但也有自己的特点，大概分为Precision Amplifiers、Low Bias Current Amplifiers、Low Power Amplifiers、Speed Precision Amplifiers、Instrumentation Amplifiers、PGAs and Difference Amplifiers、Current Sense Amplifiers等。总有一款适合你应用的产品。 用过一款放大器LT1358，根据datasheet做过一个四阶宽带滤波器。PCB如下图
LT1358，其特点： l 25MHz Gain-Bandwidth l 600V/µs Slew Rate l 2.5mA Maximum Supply Current per Amplifier l Unity Gain Stable l C-Load™ Op Amp Drives All Capacitive Loads l 8nV/rt Hz Input Noise Voltage l 600µV Maximum Input Offset Voltage l 500nA Maximum Input Bias Current l 120nA Maximum Input Offset Current l 20V/mV Minimum DC Gain, RL =1k l 115ns Settling Time to 0.1%, 10V Step l 220ns Settling Time to 0.01%, 10V Step l ±12.5V Minimum Output Swing into 500 ohms l ±3V Minimum Output Swing into 150 ohms l Specified at ±2.5V, ±5V, and ±15V 应用于： l Wideband Amplifiers l Buffers l Active Filters l Data Acquisition Systems l Photodiode Amplifiers | 
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