The MAX7408EUA+ is a high-fidelity, low-power active filter IC designed by Maxim Integrated. It provides several key features, making it suitable for audio processing and filtering applications.
The IC is a 4th-order, low-pass, Butterworth filter implemented as a switched-capacitor filter (SCF) that operates in continuous-time. This SCF architecture allows integration of various filter functions into a single IC, eliminating the need for external operational amplifiers and passive components.
One of the notable features of the IC is its low power consumption. It requires only 1.3mA of supply current, making it suitable for battery-operated devices where power efficiency is crucial. The low-power aspect of this IC extends its battery life and makes it ideal for portable audio devices.
Additionally, the MAX7408EUA+ offers high fidelity in audio applications. It provides a flat passband with a minimal roll-off of ±0.02dB, ensuring accurate reproduction of audio signals. The IC also exhibits excellent stop-band rejection with a minimum notch depth of -95dB, reducing unwanted noise and interference.
The MAX7408EUA+ has a 10kΩ input resistance, allowing direct connection to various audio sources without the need for additional buffers or preamplifiers
