The MAX7403ESA+ is a low-power, 5th order low-pass filter with a built-in operational amplifier (op-amp). This IC is commonly used in various applications, including audio processing, anti-aliasing filters, and data acquisition systems that require low-pass filtering.
One of the key features of the MAX7403ESA+ is its simplicity of use. It eliminates the need for external components, as it integrates both the low-pass filter and the op-amp in a single package. This integration reduces the complexity and cost of the circuit design.
The IC operates with a single supply voltage in the range of +2.7V to +11V, making it compatible with a wide variety of power sources. It has a low supply current of only 6mA, making it suitable for power-constrained applications.
The IC offers a cutoff frequency configuration option, allowing users to set the desired frequency according to their application requirements. It provides a -3dB cutoff frequency range from 1kHz to 1MHz, making it suitable for a broad range of filtering applications.
Another notable feature of this IC is its excellent stop-band rejection ratio, which is greater than 92dB. It ensures that unwanted frequencies above the cutoff are significantly attenuated, resulting in a clean and accurate output
