摘要
介绍了一种采用高速双极工艺研制的超高速宽带运算放大器电路。运算放大器内部采用高速电流反馈结构进行信号传输和放大,通过带宽提升、电压/电流信号转换以及稳定性补偿等设计技术,获得了要求的速度和带宽。研究了高速宽带运放性能的影响因素,并结合高速双极工艺进行了电路仿真设计和流片制作。测试结果表明:在±5 V电源电压下,运算放大器的电源电流≤6 mA,-3 dB带宽≥500 MHz,转换速率≥1 500 V/μs。
An ultra high speed wide band operational amplifier based on high speed BJT technology was designed in this paper. A high speed current feedback structure was used in the operational amplifier for signal transmission and amplification. Through the design technologies such as increased bandwidth,V-I conversion and stability compensation,the required speed and bandwidth were obtained. Relevant factors affecting performance of high speed wide band operational amplifier was analyzed,and the circuit simulation and fabrication were carried out in combination with high speed BJT process. The test results indicate that the operational amplifier has a supply current of less than 6 mA,a -3 dB bandwidth of more than 500 MHz and a slew rate of more than 1 500 V/μs at ±5 V power supply conditions.
作者
杨阳
徐佳丽
黄治华
YANG Yang;XU Jiali;HUANG Zhihua(Sichuan Iustitute of Solid Siate Circuils China Electronics Technology Group Corp.,Chongqing,400060,CHN)
出处
《固体电子学研究与进展》
CAS
北大核心
2022年第3期214-219,共6页
Research & Progress of SSE
关键词
电流反馈
高速
宽带
运算放大器
current feedback
high speed
wideband
operational amplifier
