SLG88103V

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SLG88103V is a type of linear up/down automatically switch amplifier, which is mostly used in the applications of measurement and testing in the fields of instrumentation and sound quality. In particular, it is widely used for automatic and manual volume control systems.

The SLG88103V application field mainly includes digital, video and audio signal processing, as well as complex audio and video systems. It is widely used in the fields of film processing and playback equipment, video production equipment, video post-production, radio and television live broadcast, radio and television studio, audio playback, recording and broadcast equipment and other related fields.

In terms of working principle, the SLG88103V amplifier is mainly composed of a low-noise, low distortion output transconductance amplifier, a negative feedback voltage amplifier and a differential pre-amplifier. The low-noise preamplifier is used to obtain the gain of the device, and the two amplifiers are mainly used to ensure the linearity of the circuit.

The basic circuit of the SLG88103V is a two-stage direct-coupled amplifier circuit. The 50K resistor at the input end of the first stage is used for direct-coupled coupling. At the same time, the measured signal does not need to go through a coupling capacitor or a decoupling resistor to form an AC ground at the input end, which can effectively attenuate the signal distortion caused by the phase shift of the coupling capacitor.

The input end of the two stages of the SLG88103V is connected in series with the collector of the 2SB561N transistor, and the output end is connected to the intended output port. The two transistors form an electric controlled negative feedback path, so that the overall gain of this electric feeding amplifier not only can change rapidly but also can keep in a linear stability state.

In order to prevent the series negative feedback signal from being single-ended, a differential preamplifier circuit is added to the input end. This kind of amplifier circuit can significantly reduce the signal distortion, improve the signal-to-noise ratio and reduce the input frequency-dependent signal attenuation.

In conclusion, SLG88103V is a useful and important device in fields such as instrumentation, OP Amps, Buffer Amps and sound quality. With the help of this device, users can obtain accurate and reliable measurement result in complex audio and video systems, film processing and other related fields.

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