AD8691

PRODUCTION

AD8691

Low Noise, Low Cost Single, CMOS Rail-to-Rail Output Operational Amplifier

PRODUCTION

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Part Models 4

1ku List Price Starting From $0.57

Features

Offset voltage: 400 μV typical
Low offset voltage drift: 6 μV/°C maximum (AD8692/AD8694)
Very low input bias currents: 1 pA maximum
Low noise: 8 nV/√Hz
Qualified for Automotive Applications
Low distortion: 0.0006%
Wide bandwidth: 10 MHz
Unity-gain stable
Single-supply operation: 2.7 V to 6 V

Additional Details

The AD8691, AD8692, and AD8694 are low cost, single, dual, and quad rail-to-rail output, single-supply amplifiers featuring low offset and input voltages, low current noise, and wide signal bandwidth. The combination of low offset, low noise, very low input bias currents, and high speed make these amplifiers useful in a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from this combination of performance features. Audio and other ac applications benefit from the wide bandwidth and low distortion of these devices.

Applications for these amplifiers include power amplifier (PA) controls, laser diode control loops, portable and loop-powered instrumentation, audio amplification for portable devices, and ASIC input and output amplifiers.

The small SC70 and TSOT package options for the AD8691 allow it to be placed next to sensors, thereby reducing external noise pickup.

The AD8691, AD8692, and AD8694 are specified over the extended industrial temperature range of −40°C to +125°C. The AD8691 single is available in 5-lead SC70 and 5-lead TSOT packages. The AD8692 dual is available in 8-lead MSOP and narrow SOIC surface-mount packages. The AD8694 quad is available in 14-lead TSSOP and narrow 14-lead SOIC packages. See ordering guide for automotive grades.

Applications

Photodiode amplification
Battery-powered instrumentation
Medical instruments
Multipole filters
Sensors
Portable audio devices

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

Sales & Ordering FAQs

Part Models 4

1ku List Price Starting From $0.57

Documentation

Technical Documents 1

AD8691/AD8692/AD8694: Low Cost, Low Noise, CMOS, RRO Operational Amplifiers Data Sheet (Rev.F) 10/01/2004

Reference Materials 3

National Instruments Case Study 11/21/2014

PRD1205: Quasi-Isolated Flyback 11/05/2010

High-Side Current Sensing with Wide Dynamic Range: Three Solutions 12/01/2010

Design Resources 4

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
AD8691AKSZ-REEL7	5-Lead SC70	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8691AUJZ-REEL7	5-Lead TSOT	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8691WAUJZ-R7	5-Lead TSOT	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
AD8691WAUJZ-RL	5-Lead TSOT	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys

AD8691AKSZ-REEL7
Pin/Package Drawing
5-Lead SC70
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

AD8691AUJZ-REEL7
Pin/Package Drawing
5-Lead TSOT
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

AD8691WAUJZ-R7
Pin/Package Drawing
5-Lead TSOT
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

AD8691WAUJZ-RL
Pin/Package Drawing
5-Lead TSOT
Documentation

HTML Material Declaration

HTML Reliablity Data

CAD Symbols, Footprints, and 3D Models
Ultra Librarian
SamacSys

PCN/PDN Information

Filter by Model

Part Models

Product Lifecycle

PCN

Jan 26, 2010

- 10_0007

Halogen Free Material Change for TSOT Products

AD8691AUJZ-REEL7

PRODUCTION

AD8691WAUJZ-R7

PRODUCTION

AD8691WAUJZ-RL

PRODUCTION

xls

Material_Report

pdf

PCN10_0007_Form

TSOT Qualification Data.doc

Filter by Model

Part Models

Product Lifecycle

PCN

Jan 26, 2010

- 10_0007

Halogen Free Material Change for TSOT Products

AD8691AUJZ-REEL7

PRODUCTION

AD8691WAUJZ-R7

PRODUCTION

AD8691WAUJZ-RL

PRODUCTION

xls

Material_Report

pdf

PCN10_0007_Form

TSOT Qualification Data.doc

Software & Part Ecosystem

Evaluation Kit

EVAL-OPAMP-1

EVAL-OPAMP-1 Evaluation Board

EVAL-OPAMP-1

EVAL-OPAMP-1 Evaluation Board

Buy Now View Details

Product Detail

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-1KSZ (Single 5-Lead SC70) KS-5
EVAL-PRAOPAMP-1RJZ (Single 5-Lead SOT 23) RJ-5
EVAL-PRAOPAMP-1RMZ (Single 8-Lead MSOP) RM-8
EVAL-PRAOPAMP-1RZ (Single 8-Lead SOIC) R-8

EVAL-OPAMP-1

EVAL-OPAMP-1 Evaluation Board

Tools & Simulations

LTspice 1

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Lt Spice

AD8691 - Operational Amplifiers (Op Amps)

1.41 K

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

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