摘要
介绍了一种精确程控增益、隔离放大器。该方案的放大器具有准确的程控可调增益和各通道前后级间与各通道间高的绝缘电阻。通过在冲击振动料位计中的使用 ,证明该方案的程控增益隔离放大器结构合理 ,增益控制准确、方便 ,隔离电阻高 ,噪声低 ,频带平坦。
Digitally controlled programmable gain and isolation amplifier is discussed.It is a pivotal part of the impulse vibration specimen material level detection device.This kind of amplifier’s gain can be programmable precisely controlled by digital signal and has a high insulating resistance between channels and between stages within one channel.The amplifier having reason structure,precisely and conveniently controlled gain,high insulating resistance,low noise and wide gain flatness range has been proved in the working of the impulse vibration specimen material level detection device.
出处
《测控技术》
CSCD
2003年第7期54-56,共3页
Measurement & Control Technology
关键词
程控增益
隔离
放大
programmable gain
isolation
amplify
