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美国模拟器件公司(ADI)日前推出一款高端监测器ADL5315,为光功率监测设备的接口难题提供了一种小巧的解决方案,例如从对数放大器到PIN光电二极管阴极的接口问题。ADL5315在宽范围内以1:1的电流比监测阴极电流,从而产生与监测的参考电流相等的输出电流。其他同类光电流监测器通常在较窄的范围内具有很高的镜像电流比,不能以极低的输入电流提供成比例的输出,而分立的
Analog Devices, Inc. (ADI) today introduced the ADL5315, a high-end monitor that offers a compact solution to the interface challenges of optical power monitoring devices such as the interface from logarithmic amplifiers to the PIN photodiode cathode. The ADL5315 monitors the cathode current at a 1: 1 current ratio over a wide range, producing an output current equal to the monitored reference current. Other similar photocurrent monitors typically have a high mirror current ratio over a narrow range and can not provide a proportional output at very low input currents, whereas discrete