摘要
介绍了一种应用于光接收机系统、速率可达155 Mbit/s的CMOS限幅/对数放大器的接收信号强度指示器(RSSI)。电路采用0.6μm双多晶硅N阱CMOS工艺设计并实现。在低功率、低电压条件下,RSSI实现了分段线性对数逻辑功能。在5 V电源电压下,RSSI可以检测动态输入范围大于60 dB的接收信号的强度,并且RSSI误差保持在3 dB之内,满足了光纤通信系统的要求。电路典型功耗6 mW。
The received signal strength indicator （RSSI） in a CMOS limiting/logarithmic amplifier, which is proposed for optical receiver at bit rate of 155 Mbit/s, is designed and realized in a 0.6 μm double - poly n - well CMOS process. The RSSI is implemented using piece - wise linear logarithmic function while maintaining low voltage and low power. Using a single 5V supply voltage, measured results demonstrate an input dynamic range of larger than 60 dB, and an RSSI error of less than 3 dB. The power dissipation is 6 mW.
出处
《电子工艺技术》
2006年第4期224-227,共4页
Electronics Process Technology
关键词
光纤通讯
对数逻辑功能
强度指示器
Optic - fiber communication
Logarithmic function
Strength indicator （RSSI）
