MAX7413CUA+

Overview

The MAX7413CUA+ is a fifth-order, lowpass switched-capacitor filter (SCF) from Analog Devices/Maxim Integrated. It operates on a single +3V supply and draws 1.2mA in active mode, reducing to 0.2µA in shutdown. The device provides a Bessel response with a clock-tunable corner frequency ranging from 1Hz to 15kHz, utilizing a fixed 100:1 clock-to-corner ratio. It features an offset adjust pin for DC output level tuning and supports both self-clocking via an external capacitor and external clock inputs. Packaged in an 8-pin µMAX format, it functions within a temperature range of 0°C to +70°C.

Feature Summary

• Bessel filter response optimized for fast settling and low overshoot
• Clock-tunable corner frequency adjustable between 1Hz and 15kHz
• Low-power operation with dedicated shutdown mode
• Integrated offset adjustment capability

Applications

• ADC anti-aliasing
• DAC postfiltering
• Speech processing
• CT2 base stations

Procurement Notes

Verify the specific suffix 'CUA+' against official manufacturer documentation to confirm the operating voltage, temperature range, and package type. Ensure that any ordering suffixes do not alter the functional specifications or electrical characteristics defined in the datasheet. Cross-reference the component marking with the official part identification to prevent substitution errors.

Selection Notes

Select the MAX7413CUA+ when a Bessel response is required for applications prioritizing fast settling times over passband flatness. This model is specifically designed for single +3V supply systems, distinguishing it from the +5V MAX7409 variant. Designers must ensure the clock frequency maintains the specified 100:1 ratio relative to the desired corner frequency.

Part Context

This component belongs to the MAX7409/MAX7410/MAX7413/MAX7414 family of fifth-order lowpass switched-capacitor filters. While sharing identical architectural features and pinouts, the family is differentiated by filter response type and supply voltage requirements. The MAX7413 specifically combines the Bessel response with +3V single-supply operation.

Replacement Considerations

The MAX7414 serves as a direct pin-compatible alternative within the same family, offering a Butterworth response instead of Bessel while maintaining the +3V supply requirement.