MAX7401

PRODUCTION

8th-Order, Lowpass, Bessel, Switched-Capacitor Filters

Smallest, Lowest-Power 8th-Order Bessel Filters

Data Sheet (Rev. 1) Product Selection Table

Part Models: 6
1ku List Price: Starting From $3.89

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Overview

8th-Order, Lowpass Bessel Filters
Low Noise and Distortion: -82dB THD + Noise
Clock-Tunable Corner Frequency (1Hz to 5kHz)
100:1 Clock-to-Corner Ratio
Single-Supply Operation
- +5V (MAX7401)
- +3V (MAX7405)
Low Power
- 2mA (Operating Mode)
- 0.2µA (Shutdown Mode)
Available in 8-Pin SO/DIP Packages
Low Output Offset: ±5mV

The MAX7401/MAX7405 8th-order, lowpass, Bessel, switched-capacitor filters (SCFs) operate from a single +5V (MAX7401) or +3V (MAX7405) supply. These devices draw only 2mA of supply current and allow corner frequencies from 1Hz to 5kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode that reduces supply current to 0.2µA.

Two clocking options are available on these devices: self-clocking (through the use of an external capacitor) or external clocking for tighter corner-frequency control. An offset adjust pin allows for adjustment of the DC output level.

The MAX7401/MAX7405 Bessel filters provide low overshoot and fast settling. Their fixed response simplifies the design task to selecting a clock frequency.

Applications

ADC Anti-Aliasing
Air-Bag Electronics
CT2 Base Stations
Post-DAC Filtering
Speech Processing

Part Models: 6
1ku List Price: Starting From $3.89

Documentation

Data Sheet 1

MAX7401-MAX7405: 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Data Sheet (Rev.1) 06/01/1999

Technical Articles 4

Filter Basics: Anti-Aliasing 01/11/2002

A Filter Primer 09/18/2002

Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface 03/08/2011

Integrated solutions make analog filter design easy 11/04/2009

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX7401CPA+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7401CSA+	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7401CSA+T	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7401EPA+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7401ESA+	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7401ESA+T	Small-Outline IC, Narrow (0.15in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

May 22, 2018 - 1702N ASSEMBLY
		pcn_1702n
MAX7401CSA+	PRODUCTION
MAX7401CSA+T	PRODUCTION
MAX7401ESA+	PRODUCTION
MAX7401ESA+T	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Active Filters 2
MAX291	PRODUCTION	8th-Order, Lowpass, Switched-Capacitor Filters
MAX296	PRODUCTION	8th-Order, Lowpass, Switched-Capacitor Filters

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