MAX74821

RECOMMENDED FOR NEW DESIGNS

Precision, Low Noise, CMOS, Rail-to-Rail, Input/Output Operational Amplifier

Data Sheet (Rev. 0) Product Selection Table

Part Models: 3
1ku List Price: Starting From $0.80

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Overview

Low offset voltage: 300μV maximum
Low input bias currents: 5pA maximum
Low noise: 9nV/√Hz
Wide bandwidth: 10MHz
High slew rate: 5V/μs

High open-loop gain: 120dB
Unity gain stable
Single-supply operation: 5.5V
Low supply current: 1.15mA/amplifier

The MAX74821 is a dual rail-to-rail input and output, single-supply amplifier. The MAX74821 features very low offset voltage, low input voltage and current noise, and wide signal bandwidth. The MAX74821 uses the Analog Devices Inc. patented DigiTrim® trimming technique, which achieves superior precision without the switching noise associated with chopping or auto-zeroing techniques.

The combination of low offsets, low noise, very low input bias currents, and high speed makes this amplifier useful in a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from the combination of performance features. Audio and other AC applications benefit from the wide bandwidth and low distortion. Applications for these amplifiers include optical control loops, portable and loop-powered instrumentation, and audio amplification for portable devices.

The MAX74821 is specified over the extended industrial temperature range (−40°C to +125°C). The MAX74821 dual is available in an 8-lead MSOP package.

APPLICATIONS

Photodiode amplification
Optical control loops
Battery-powered instrumentation
Loop-powered instrumentation
Multipole filters
Sensors
Barcode scanners
Audio

Part Models: 3
1ku List Price: Starting From $0.80

Documentation

Data Sheet 1

MAX74821: Precision, Low Noise, CMOS, Rail-to-Rail, Input/Output Operational Amplifier Data Sheet (Rev.0) 05/14/2025

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
MAX74821ARMZ	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX74821ARMZ-R7	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX74821ARMZ-RL	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

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

Software Resources

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Evaluation Kits

EVAL-OPAMP-2 Evaluation Board

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Product Details

The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.

EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8

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