MAX7420

PRODUCTION

5th-Order, Lowpass, Switched-Capacitor Filters

Data Sheet (Rev. 2) Product Selection Table

Part Models: 4
1ku List Price: Starting From $4.09

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Overview

5th-Order, Lowpass Filters
- Elliptic Response (MAX7418/MAX7421/MAX7422/MAX7425)
- Bessel Response (MAX7419/MAX7423)
- Butterworth Response (MAX7420/MAX7424)
Clock-Turnable Corner Frequency (1Hz to 45kHz)
Single-Supply Operation
- +5V (MAX7418–MAX7421)
- +3V (MAX7422–MAX7425)
Low Power
- 3mA (Operating Mode)
- 0.2µA (Shutdown Mode)
Available in 8-Pin µMAX® Package
Low Output Offset: ±4mV

The MAX7418–MAX7425 5th-order, low-pass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7418–MAX7421) or +3V (MAX7422–MAX7425) supply. These devices draw only 3mA of supply current and allow corner frequencies from 1Hz to 45kHz, 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: 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 MAX7418/MAX7422 deliver 53dB of stopband rejection and a sharp rolloff with a 1.6 transition ratio. The MAX7421/MAX7425 achieve a sharper rolloff with a 1.25 transition ratio while still providing 37dB of stopband rejection. The MAX7419/MAX7423 Bessel filters provide low overshoot and fast settling, and the MAX7420/MAX7424 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task of selecting a clock frequency.

APPLICATIONS

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

Part Models: 4
1ku List Price: Starting From $4.09

Documentation

Data Sheet 1

MAX7418-MAX7425: 5th-Order, Lowpass, Switched-Capacitor Filters Data Sheet (Rev.2) 04/28/2022

Technical Articles 2

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

Anti-Aliasing Basics Using Switch-Capacitor Filters 04/12/2005

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
MAX7420CUA+	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7420CUA+T	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7420EUA+	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX7420EUA+T	Micro-MAX, Thin Shrink Small-Outline	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Sep 19, 2018 - 1753N ASSEMBLY
		pcn_1753n
MAX7420CUA+	PRODUCTION
MAX7420CUA+T	PRODUCTION
MAX7420EUA+	PRODUCTION
MAX7420EUA+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 8
MAX7408	PRODUCTION	5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX7409	PRODUCTION	5th-Order, Lowpass, Switched-Capacitor Filters
MAX7410	PRODUCTION	5th-Order, Lowpass, Switched-Capacitor Filters
MAX7411	PRODUCTION	5th Order, Lowpass, Elliptic, Switched-Capacitor Filters

MAX7412	PRODUCTION	5th Order, Lowpass, Elliptic, Switched-Capacitor Filters
MAX7413	PRODUCTION	5th-Order, Lowpass, Switched-Capacitor Filters
MAX7414	PRODUCTION	5th-Order, Lowpass, Switched-Capacitor Filters
MAX7415	PRODUCTION	5th Order, Lowpass, Elliptic, Switched-Capacitor Filters

Evaluation Kits

Evaluation Kit for the MAX7408, MAX7409, MAX7410, MAX7411, MAX7412, MAX7413, MAX7414, MAX7415, MAX7418, MAX7419, MAX7420, MAX7421, MAX7422, MAX7423, MAX7424, and MAX7425

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Features and Benefits

CLK Pad for External Clock Frequency
Lead(Pb)-Free and RoHS Compliant
Proven PCB Layout

Product Details

The MAXFILTERBRD is an unpopulated PCB design to evaluate the MAX7408–MAX7415/MAX7418–MAX7425 5th-order, lowpass, switched-capacitor filters (SCFs).

Contact the factory for free samples of the pin-compatible MAX7408–MAX7415/MAX7418–MAX7425 SCFs to evaluate these devices.

Applications

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

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