基于ispPAC10在增益设置方面的应用

电路设计中要实现对微弱信号放大、高速信号采集、大功率输出等功能,必须采用模拟电路,但长期以来模拟电路的设计一直存在着处理精度低,设计、调试难度大等缺陷。基于此利用Lattice公司推出的在系统可编程模拟电路简称ispPAC进行了放大器的增益设计。它允许设计者使用EDA软件在计算机上设计修改模拟电路,并进行仿真,最后还可以通过编程电缆将设计方案下载到芯片中去。通过开发软件可以调整电路的增益、带宽和阈值等性能指标。在此主要介绍了利用ispPAC10实现模拟信号的增益调整方面的几种技术。

The Application on the Gain Setting Based on ispPAC10

To realize the weak signal amplifying,signal acquisition and large power outputting function,the circuit design must use the analog circuit.But it is long-term that the analog circuit design has the defects of low processing accuracy,difficult for design and debugging.This paper uses ispPAC which is called programmable analog circuits in system that introduced by Lattice Company to achieve the gain of amplifier design.It allows the designer to use the EDA software in computer design to modify the analog circuit and carries on the simulation.Finally it can download the design to the chip with programmed cable and adjust the gain,bandwidth and threshold properties of circuit by developing software.This paper mainly describes the use of ispPAC10 which can realize analog signal gain adjustment techniques.