介绍了程控增益放大器三种电路实现方式，以及这几类电路在电声系统中的应用。
Three kinds of programmable gain amplifier circuit are introduced in this article. Their applications to electro-acoustic system are introduced, too.
介绍了一种实用的程控增益技术，该技术利用DAC0832作为程控增益放大器，具有良好的控制特性，线性度好。
This paper introduces a sort of program-controlled-gain technology, which makes use of DAC0832. The amplifier has good control and linear characteristic.
提出一种自动量程切换电压测量系统的设计方法，该系统基于程控增益放大器器件，使用单片机控制其增益实现量程的自动切换。
It presents a system of voltage measurement with self-scale, based on the program control amplifier controlled by the single chip computer.
该系统中的硬件包括D／A和A／D转换接口、程控增益放大器、多路取样阀门控制接口等；软件包括在线流程分析和常规分析软件。
Hardware interface includes A/D, D/A converters, programmable gain controller and multiplex sampling valve controller. software includes on-line process analysis and normal analysis unit.
设计了一个测量放大器电路，它由差动放大电路、共模抑制电路、双端单端转换电路和程控增益放大电路组成。
A measurement amplifier circuit is designed, which consists of circuits of differential amplifier, a common-mode rejection, double-end and single-end conversions and programmed gain amplifier.
并以宽带电流反馈运算放大器为核心，辅以FET输入电路及程控电路构建了高速高输入阻抗可变增益放大电路。
Combined with wide band current feedback amplifier, FET input circuit and programmable circuit, variable gain amplification circuit with high speed and high input impedance is designed.
本文重点介绍了KD1411的以下三个主要特点：（1）增益可编程控制的微弱信号放大器的设计；
This paper lays stress on the description of the three main features of KD1411: 1. the design of weak signal DC amplifier with programmable gain;
本文针对增益为20～ 23倍的可编程阶码放大器AD5 2 6集成片，摆脱传统的设计方法，提出一种反馈式程控放大电路。
This paper introduces a special amplifying circuit which can vary the gain from 2 0 to 2 3 in allusion to AD526 chip, throwing out of the traditional method.
本文针对增益为20～ 23倍的可编程阶码放大器AD5 2 6集成片，摆脱传统的设计方法，提出一种反馈式程控放大电路。
This paper introduces a special amplifying circuit which can vary the gain from 2 0 to 2 3 in allusion to AD526 chip, throwing out of the traditional method.
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