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variable gain
Vertaling van "variable gain" in Chinees
可变增益
述可变增益
measure an amplitude of an analog signal coupled to the variable gain amplifier,
测量与可变增益放大器耦合的模拟信号的振幅，
adjust a first gain of the variable gain amplifier according to a first gain function, and
根据第一增益函数调整可变增益放大器的第一增益，并且
The IF module consists of low-pass filter, buffer and variable gain amplifer.
中频模块由低通滤波器、缓冲器和可变增益放大器组成。
A/D converter 274 may be implemented using a sigma-delta A/D converter, and digital compression block 276 may be implemented using an adjustable coefficient digital filter followed by a digital noise shaper, as described in the embodiment of Figure 1e above. Alternatively, other converter and variable gain architectures may be used. In an embodiment, digital decompression block 276 provides a single-bit bitstream output to output pin 280.
可使用积分三角模数转换器实施模数转换器274，可使用数字噪音整形器前面的可调系数数字滤波器实施数字解压块276，如上文中图1e的实施例所述。可替代地，可使用其他转换器和可变增益架构。在一个实施例中，数字解压块276向输出脚280提供单位位流输出。
Figure 1d illustrates an alternative circuit for implementing a variable gain at the input. Here, gain control signal GC1 controls bias generator 132 that provides a bias voltage to MEMS microphone 102 that is coupled to amplifier 134. In some embodiments, the gain of MEMS microphone 102 is proportional to the provided bias voltage. By varying the bias voltage in response to the detected peak signal voltage, the sensitivity of the capacitive sensor is changed, which results in changing the signal level at the input to amplifier 108. Variable voltage bias generator 132 may be implemented using a digital to analog converter followed by a charge pump as described in co-pending application 13/217,890, or by using other circuits, systems or techniques known in the art.
图1d图解了用于在输入端实施可变增益的替代电路。此处，增益控制信号GC1控制偏压发生器132，偏压发生器132向与放大器134耦合的MEMS麦克风102提供偏压。在某些实施例中，MEMS麦克风102的增益与提供的偏压成正比。通过响应检测的峰值信号电压而改变偏压，电容传感器的敏感度改变，从而改变了放大器108的输入端的信号电平。可使用电荷泵前面的数模转换器（如共同待决申请13/217，890所述）或使用本领域中已知的其他电路、系统或技术实施可变电压偏压发生器132。
This is achieved by AC coupling the preamplifier and including variable gain to increase the signal-to-noise ratio (SNR).
这是通过 AC 耦合前置放大器并包含可变增益以提高信噪比 （SNR） 实现的。
Amplifiers Broad selection of RF amplifiers including gain blocks/drivers, low noise amplifiers (LNAs) and variable gain amplifiers (VGAs) for cellular applications and diverse markets.
射频放大器的选择范围广泛，包括增益模块/驱动器、低噪声放大器 （LNA） 以及可变增益放大器 （VGA ） ， 用于蜂窝式应用和各种市场。
The AD8375 is a digitally controlled, variable gain, wide bandwidth amplifier that provides precise gain control, high IP3, and low noise figure.
AD8375是一款数字控制、可变增益、宽带宽放大器，可以提供精密增益控制、高IP3与低噪声系数。
The AD8366 is a matched pair of fully differential, low noise and low distortion, digitally programmable variable gain amplifiers (VGAs).
AD8366包括一对匹配的全差分、低噪声、低失真数字可编程可变增益放大器（VGA ） 。
Analog Control VGAs Analog Control VGAs Analog Devices voltage controlled variable gain amplifiers provide continuous gain control over a wide dynamic range for a variety of audio and optical frequency bands.
（参数搜索） 模拟控制VGA 模拟控制VGA ADI公司的电压控制可变增益放大器可在宽动态范围内针对各种音频和光频频段提供连续增益控制。
ADI RF VGAs, IF VGAs, and variable gain control products offer the high performance needed for communications, instrumentation, and military designs.
ADI公司的RF VGA、IF VGA和可变增益控制产品提供通信、仪器仪表和军用设计所需的高性能。
The LTC6412 is a fully differential variable gain amplifier with linear-in-dB analog gain control.
LTC6412 是一款全差分可变增益放大器，采用对数线性模拟增益控制。
TI delivers a broad portfolio of amplifiers and linear solutions including Op Amps, Audio Amplifiers, Linear Amplifiers, Instrumentation Amplifiers, Programmable Gain Amplifiers, Current Shunt Monitors, Comparators and Variable Gain Amplifiers.
TI 提供了广泛的放大器产品和线性解决方案组合，包括运算放大器、音频放大器、线性放大器、仪表放大器、可编程增益放大器、分流器监视器、比较器和可变增益放大器。
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