ADA4661-2

RECOMMENDED FOR NEW DESIGNS

18 V, Precision, 725 μA, 4 MHz CMOS RRIO Operational Amplifier

Data Sheet (Rev. 0) Product Selection Table

Part Models: 6
1ku List Price: Starting From $1.46

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Part Details

Low power at high voltage (18 V): 725 μA maximum
Low offset voltage:

150 μV maximum at Vsy/2
300 μV maximum over entire common mode range

Low input bias current: 15 pA maximum
Gain bandwidth product: 4 MHz typical at A_v = 100
Unity-gain crossover: 4 MHz typical

-3 dB closed-loop bandwidth: 2.1 MHz typical
Single-supply operation: 3 V to 18 V
Dual-supply operation: ±1.5 V to ±9 V
Unity-gain stable
Download ADA4661-2-KGD Data Sheet
Available As Known Good Die and fully guaranteed to data sheet specifications

Part Models: 6
1ku List Price: Starting From $1.46

Documentation

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
ADA4661-2-KGD-WP	CHIPS OR DIE	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADA4661-2ACPZ-R7	8-Lead LFCSP (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADA4661-2ACPZ-RL	8-Lead LFCSP (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADA4661-2ARMZ	8-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADA4661-2ARMZ-R7	8-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADA4661-2ARMZ-RL	8-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 6, 2014 - 13_0223 Assembly and Test Transfer of Select 2x3mm and 3x3mm LFCSP Products to STATS ChipPAC China
		PCN13_0223_Form Material_Report Detailed Change Description Qualification Results Summary Test Correlation Report
ADA4661-2ACPZ-R7	PRODUCTION
ADA4661-2ACPZ-RL	PRODUCTION

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

Hardware Ecosystem

16 Bit, Biopotential Sensing Signal Chain

Modify Design LTspice Simulation
18 Bit, Biopotential Sensing Signal Chain

Modify Design LTspice Simulation

Tools & Simulations

LTspice 1

ADA4661-2 - Operational Amplifiers (Op Amps)

Models for the following parts are available in LTspice:

ADA4661-2

Precision ADC Driver Tool

The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input

Open Tool

Signal Chain Designer - BETA

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool

Amplifiers & Linear Tools

Design with confidence using these free tools for circuit simulation, design optimization and product selection.

Open Tool

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Open Tool

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

Open Tool

SPICE Model 1

ADA4661 SPICE Macro Model

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.