摘要
介绍了一个采用温度和工艺补偿电流镜实现的基准电流源。与绝对温度成正比（PTAT）的电流和与绝对温度互补（CTAT）电流以一定权重相加产生与温度无关的基准电流。在Cadence软件平台下用Spectre工具，基于CSMC 0．5um BiCMOS工艺模型对电路进行仿真，仿真结果表明该基准可输出2152uA的稳定电流，-40-85℃内，温度系数为24．4ppm／℃。
A current reference using temperature and process compensation current mirror is proposed. The temperature independent reference current is generated by summing a proportional to absolute temperature （PTAT） current and a complementary to absolute temperature （CTAT） current. Simulation is implemented under the Cadence＇s Spectre based on CSMC 0.5um BiCMOS process. Simulation Result indicates the proposed current reference can output a 21.52uA stable current, and the temperature coefficient is 24.4ppm/℃over a temperature range of-40-85℃.
出处
《电脑知识与技术》
2011年第3期1686-1688,共3页
Computer Knowledge and Technology
