摘要
针对目前基于D/A转换器件、模拟开关或数字电位计的程控放大器设计硬件成本高、增加系统噪声的缺点,本文设计了采用PWM转D/A技术的程控放大器,提高了精度,节约了硬件成本,降低了系统噪声。
The paper deals with the shortcomings of high cost of hardware and the system noise of current programmable gain amplifier （PGA） design based on D / A converter device, analog switch, and digital potentiometer. In this paper, by using of PWM to D / A technology, a high precision and low-noise PGA is designed, which can save hardware costs and reduce the system noise.
出处
《南京工业职业技术学院学报》
2011年第2期29-30,共2页
Journal of Nanjing Institute of Industry Technology
基金
南京工业职业技术学院2009年科研项目(编号:QK2009-04-01)
