Maxim Integrated 8th-Order Lowpass Elliptic Active Filter 10kHz Cut-off Frequency Surface Mount SOIC MAX7400

Maxim Integrated MAX7400 is an 8th-order lowpass elliptic active filter incorporating a switched capacitor architecture designed for precision signal processing tasks. Operating with a cut-off frequency of 10kHz, this device delivers superior low noise and very low distortion, achieving -82dB THD + noise performance. It functions on a single power supply in the range of 4.5V to 5V, making it suitable for compact and efficient circuit designs.

The MAX7400 comes in a compact surface mount SOIC package with dimensions of 5mm length, 4mm width, and 1.5mm height, and features an 8-pin configuration. Its robust operating temperature range of -40°C to 85°C ensures reliability in commercial and industrial environments without automotive standard certification.

Its clock-tunable corner frequency capability allows precise frequency adjustment over a 100:1 ratio from 1Hz up to 10kHz, enabling flexible integration into various analog front-end applications. This low power device consumes only 2mA during operation, with an efficient shutdown mode current of just 0.2μA, optimizing energy use in portable and fixed systems.

The low output offset of ±5mV minimizes signal distortion, enhancing accuracy in analog to digital conversion (ADC) anti-aliasing, airbag electronics, CT2 base stations, post-DAC filtering, and speech processing environments. This makes the MAX7400 a versatile component in advanced electronics requiring clean signal filtering.

The filter operates on a single 4.5V to 5V supply and uses a surface mount SOIC package. It offers low noise and distortion performance with -82dB THD + Noise. Clock-tunable corner frequency ranges from 1Hz to 10kHz for flexible filtering.

Operating current is 2mA with low shutdown current at 0.2μA, optimizing power consumption. Compact with a pin count of 8 and package dimensions of 5mm length, 4mm width, and 1.5mm height. Designed for reliable operation from -40°C to 85°C ambient temperatures.

Applications include ADC anti-aliasing, airbag electronics, base stations, post-DAC filtering, and speech processing.

The MAX7400 is ideal for use in electronic, industrial, laboratory, and communication equipment applications where precise analog filtering is critical. It supports advanced signal conditioning in demanding environments, enabling manufacturers and engineers to achieve high performance and reliability.

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