CGY887A,112

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Linear amplifiers are used to increase the power of the input signal which is the original signal prior to any amplification. CGY887A,112 is a typical linear amplifier which can be used in a variety of applications and has a simple working principle.

Application field

CGY887A,112 is a high performance monolithic voltage feedback amplifier and is mainly applied in audio and video amplifiers. Being mainly applicable in audio systems, the amplifier boosts the signal between a pre-amp and a power amplifier, greatly increasing the audio level. The amplifier features a high power figure of 45 watts and stereo capabilities. Furthermore, the amplifier can increase the quality of the sound due to its high performance and low distortion figures. It has a wide operating temperature range and provides a stable operating voltage of between 4.9 and 24 volts. Additionally, CGY887A,112 is also applicable in some video amplifiers. The amplifier increases the video signal between the video source and display which allows the user to adjust the display brightness, contrast and colour.

Working principle

In general, linear amplifiers are used for various applications like audio, radio and television and consist of an input, output and feedback circuits. The input circuit is used to provide a gain to the output circuit. The feedback circuit is used to compare the input and output signals and maintains the output signal in a linear state. CGY887A,112 uses a voltage-feedback (VFB) amplifier which uses a feedback circuit to enable the user to control the gain. This amplifier operates in inverting, non-inverting and voltage-controlled modes. Inverting and non-inverting modes are available depending on how the output is connected. In addition to that, the voltage-controlled mode allows the user to control the gain through an external voltage. The voltage-controlled mode can also be used to adjust the frequency response, and offers high power figure.

Conclusion

CGY887A,112 is a high performance monolithic voltage-feedback amplifier which is mainly used in audio and video amplifiers. It has high power figure, low distortion figures and a wide operating temperature range. The amplifier uses an input and feedback circuit to provide gain to the output and amplifies the signal between a pre-amp and a power amplifier and between a video source and display. The voltage-controlled mode also offers high power figure and frequency response. Thus, CGY887A,112 is a highly efficient amplifier for audio and video applications.

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