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MAX7491EEE+

MAX7491EEE+ Description

The MAX7491EEE+ from Analog Devices Inc./Maxim Integrated is a high-performance 2nd-order universal switched-capacitor filter designed for precision signal conditioning in low-voltage applications. Housed in a compact 16-QSOP surface-mount package, it operates within a 2.7V to 3.6V supply range, making it ideal for portable and battery-powered systems. With a 40kHz cutoff/center frequency, this dual-filter IC (two independent filters per device) offers exceptional flexibility for anti-aliasing, noise reduction, and frequency shaping. Compliant with ROHS3 and REACH standards, it features MSL 1 (Unlimited) moisture sensitivity, ensuring reliability in harsh environments.

MAX7491EEE+ Features

• Universal Switched-Capacitor Architecture: Programmable as low-pass, high-pass, band-pass, or notch filters.
• Dual Independent Filters: Integrates two 2nd-order filters in one IC, reducing board space and BOM cost.
• Low-Voltage Operation (2.7V–3.6V): Optimized for battery-powered and portable electronics.
• 40kHz Frequency Range: Suitable for audio, instrumentation, and communication systems.
• Surface-Mount (QSOP-16): Compact footprint for space-constrained designs.
• Robust Compliance: ROHS3, REACH Unaffected, and EAR99 (export-friendly).

MAX7491EEE+ Applications

• Portable Medical Devices: ECG/EEG signal conditioning with minimal power draw.
• Industrial Sensors: Anti-aliasing for ADC front-ends in data acquisition systems.
• Audio Processing: Noise filtering in headsets and microphones.
• Wireless Communication: Baseband filtering in low-power RF modules.
• Test & Measurement Equipment: Tunable filter stages for signal analysis.

Conclusion of MAX7491EEE+

The MAX7491EEE+ stands out for its versatility, low-power operation, and dual-filter integration, offering a cost-effective solution for precision analog filtering. Its 40kHz range and universal configurability make it superior to fixed-topology filters, while the QSOP-16 package ensures compatibility with modern SMT assembly. Ideal for medical, industrial, and consumer electronics, this IC combines performance with efficiency, meeting stringent environmental and regulatory standards.