MAX7411CUA+

MAX7411CUA+ Application Field and Working Principle

MAX7411CUA+ can be classified into interface-filters-active. It is a silicon active filter that eliminates undesired signals in transmission lines. The filter operating temperature range is -55 ° to +125 °C with a supply voltage of ±4.5V ~ 5.5V.

Applications:

• Amplifying and filtering of signals in communication systems that adopt multi-level modulation
• Eliminating fundamental frequency of the signal in power supply distribution systems
• Upgrading signal-to-noise ratio in RF communication systems

Working Principle:

The filter core is based on the silicon-gate CMOS technology which allows for superior performance. It is constructed with a high pass filter(HPF), low pass filter(LPF) and a buffer that are implemented in the MAX7411CUA+ chip. The HPF can eliminate undesired frequencies below the break frequency, while the LPF can limit the upper limit of the frequencies. The frequency response inside the filter can be configured with the external passive components in order to satisfy the desired requirement.

Once a signal reaches the MAX7411CUA+, the input is first sent to the HPF where it is filtered and the undesired frequencies are eliminated. The filtered signal then goes to the buffer, where the signal is also amplified. Subsequently, the signal is sent to the LPF, where it is filtered and the upper limit of undesired frequencies is set.

The filtered signal is then sent to the output, where it is further amplified and is ready for the next stage. The MAX7411CUA+ is an integrated active filter that provides an optimum solution for eliminating undesired frequencies in transmission lines. It is suitable for use in a variety of applications, such as signal amplification and improvement of signal-to-noise ratio in RF communication systems.