MAX270

PRODUCTION

Digitally-Programmed, Dual 2nd-Order Continuous Lowpass Filter

Data Sheet (Rev. 2) Product Selection Table

Part Models: 4
1ku List Price: Starting From $12.65

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Overview

Continuous-Time Filtering - No Clock Required
Dual 2nd-Order Lowpass Filters
Sections Independently Programmable: 1kHz to 25kHz
96dB Dynamic Range
No External Components
Cascadable for Higher Order
Low-Power Shutdown Mode
Track-and-Hold (MAX271)

The MAX270/MAX271 are digitally-programmed, dual second-order continuous-time lowpass filters. Their typical dynamic range of 96dB surpasses most switched capacitor filters which require additional filtering to remove clock noise. The MAX270/MAX271 are ideal for anti-aliasing and DAC smoothing applications and can be cascaded for higher-order responses.

The two filter sections are independently programmable by either microprocessor (µP) control or pin strapping. Cutoff frequencies in the 1kHz to 25kHz range can be selected.

The MAX270 has an on-board, uncommitted op amp, while the MAX271 has an internal track-and-hold (T/H).

Applications

Anti-Aliasing and Track-and-Hold (MAX271)
Anti-Aliasing Filter
Low-Noise Applications
Lowpass Filtering
Output Smoothing

Part Models: 4
1ku List Price: Starting From $12.65

Documentation

Data Sheet 1

MAX270-MAX271: Digitally-Programmed, Dual 2nd-Order Continuous Lowpass Filter Data Sheet (Rev.2) 11/16/2012

Design Note 2

µP-Supervisor Chip Controls Programmable Filter 07/09/1998

Three ICs Produce Pure Sine Waves 07/09/1998

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
MAX270CPP+	Plastic Dual-In-Line, Narrow (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX270CWP+	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX270EWP+	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX270EWP+T	Small-Outline IC, Wide (0.3in)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

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