Analog Devices, Inc. | world leader in high performance signal processing

Application Notes (7)

AN-1114: Lowest Noise Zero-Drift Amplifier Has 5.6 nV/√Hz Voltage Noise Density (pdf, 182 kB)
AN-1026: High Speed Differential ADC Driver Design Considerations (pdf, 355 kB)
AN-0992: Active Filter Evaluation Board for Differential Amplifiers (pdf, 85 kB)
AN-0990: Terminating a Differential Amplifier in Single-Ended Input Applications (pdf, 181 kB)
AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance (pdf, 199 kB)
AN-649: Using the Analog Devices Active Filter Design Tool (pdf, 5301 kB)
AN-584: Using the AD813X Differential Amplifier (pdf, 174 kB)
The AD813x differs from conventional op amps by the external presence of an additional input and output. The additional input, VOGM, controls the output common mode voltage.

Circuit Note (14)

Technical Articles (9)

Amplifiers for Signal Conditioning - Section 3 (PDF, 397 kB)
By Walt Kester, James Bryant, Walt Jung
Demystifying Auto-Zero Amplifiers Part 1
by Eric Nolan (Analog Dialogue, March 2000)
Demystifying Auto-Zero Amplifiers Part 2
by Eric Nolan and Reza Moghimi (Analog Dialogue, May 2000)
Difference Amplifier Uses Digital Potentiometers
by Reza Moghimi, Analog Devices, Inc.
(EDN, May 30, 2002)
High-Voltage Monitor Features High Accuracy
... Article is on page 3 of PDF.
(Electronic Design, Ideas for Design, 8/19/2002)
Maximize Performance When Driving Differential ADCs
... Converting a single-ended signal to a differential signal before the analog-to-digital conversion can improve the performance of your data-acquisition system. By Sally Paterson, Analog Devices (EDN, 6/12/2003)
MS-2062: To Chop or Auto-Zero: That Is the Question. (pdf, 278 kB)
MS-2066: Low Noise Signal Conditioning for Sensor-Based Circuits (pdf, 425 kB)
MS-2210: Designing Power Supplies for High Speed ADC (pdf, 327 kB)

ADIsim Design/Simulation Tools (4)

ADI DiffAmpCalc™
ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.
ADIsimOpAmp™
This tool will help with the selection, evaluation and troubleshooting of voltage feedback Op-Amps. It uses typical data to model the behavior of a selected amplifier. It allows a user to select an amplifier, configure a circuit, apply a signal and evaluate the performance. It is useful for checking an amplifier's spec's such as Bandwidth, Slew Rate, Input/Output Range, Gain Error, Load Current, Stability Issues and DC Errors in a given circuit.
ADIsimPower™ Voltage Regulator Design Tool
This expert design tool produces custom DC-DC converter designs in about a minute. The user enters 5 inputs and chooses to optimize for efficiency, PCB space, cost, or part count. Output is a complete schematic, BOM, efficiency plot, and performance summary. A PDF summary and a blank PCB is offered for each design to facilitate fast prototyping to verify the design.
Analog Bridge Wizard

Aerospace Information (1)

Aerospace Dice (pdf, 196 kB)
(Revised 1/2006)
Many Analog Devices products can be purchased as Class K die.

Data Sheets (6)

Design Calculators (1)

OpAmp Stability
An applet for demonstrating stability effects in opamp buffers.

Design Handbooks (1)

Op Amp Applications Handbook

Documentation (7)

AN-0992: Active Filter Evaluation Board for Differential Amplifiers (pdf, 85 kB)
ADIsimPower™ Voltage Regulator Design Tool
This expert design tool produces custom DC-DC converter designs in about a minute. The user enters 5 inputs and chooses to optimize for efficiency, PCB space, cost, or part count. Output is a complete schematic, BOM, efficiency plot, and performance summary. A PDF summary and a blank PCB is offered for each design to facilitate fast prototyping to verify the design.
EVAL-AD7352/AD7356/AD7357 Technical Note (pdf, 541 kB)
Evaluation Board for Differential Input, Simultaneous Sampling, 12-/14-Bit ADC
EVAL-PRAOPAMP - Universal Precision Op Amp Evaluation Board
UG-130: Differential Amplifier Evaluation Board for 8-lead SOIC and MSOP Packages (pdf, 493 kB)
UG-474: Evaluation Board for Differential Amplifiers Offered in 8-Lead SOIC Packages (PDF, 263 kB)
AN-649: Using the Analog Devices Active Filter Design Tool (pdf, 5301 kB)

FAQs/RAQs (1)

What do I do with the "null pins" on the amplifier if I don't plan to use them?

Overview (4)

Amplifier pricing where you want it, (pdf, 1037 kB)
... performance where you need it.
ICs for Programmable Logic Control and Distributed Control Systems (pdf, 976 kB)
Analog Devices leadership in industrial IC technology, with the development of the iCMOS™ and iPolar™ processes, has uniquely defined high voltage and low voltage integration to deliver smaller, higher performance, and more cost effective ICs for industrial systems.
Zero-Drift Amplifiers
Zero-drift Amplifiers

Product Selection Guide (1)

High Speed Amplifiers Selection Table (pdf, 77 kB)

Software and Tools (1)

AD7352/AD7356/AD7357 Evaluation Software

SPICE Models (4)

AD8138 SPICE Macro-Model
- AD8138 SPICE Macro-Model, Rev E, TRW, 11/2002
AD8628 SPICE Macro-Model
- AD8628 SPICE Macro-Model Ver. 0.0, 3/02
AD8638 SPICE Macro Model
- AD8638 SPICE Macro Model, Rev 1.0, 11/2007
OP177 SPICE Macro-Model

Tutorials (14)

MT-031: Grounding Data Converters and Solving the Mystery of (pdf, 144 kB)
MT-036: Op Amp Output Phase-Reversal and Input Over-Voltage Protection (pdf, 653 kB)
MT-047: Op Amp Noise (pdf, 72 kB)
MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth (pdf, 81 kB)
MT-049: Op Amp Total Output Noise Calculations for Single-Pole System (pdf, 40 kB)
MT-050: Op Amp Total Output Noise Calculations for Second-Order System (pdf, 38 kB)
MT-052: Op Amp Noise Figure: Don't Be Mislead (pdf, 60 kB)
MT-055: Chopper Stabilized (Auto-Zero) Precision Op Amps (pdf, 320 kB)
MT-061: Instrumentation Amplifier (In-Amp) Basics (pdf, 125 kB)
MT-074: Differential Drivers for Precision ADCs (pdf, 249 kB)
MT-075: Differential Drivers for High Speed ADCs Overview (pdf, 183 kB)
MT-076: Differential Driver Analysis (pdf, 95 kB)
MT-101: Decoupling Techniques (pdf, 954 kB)
MT-218: Multiple Feedback Band-Pass Design Example (pdf, 0)

User Guides (2)

UG-130: Differential Amplifier Evaluation Board for 8-lead SOIC and MSOP Packages (pdf, 493 kB)
UG-474: Evaluation Board for Differential Amplifiers Offered in 8-Lead SOIC Packages (PDF, 263 kB)

Webcasts (4)

A Stress-Free Method for Choosing High-Speed Op Amps
A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.
WEBCAST: Noise Optimization in Sensor Signal Conditioning Circuits (Part I)
This first part of a two-part series will explore the noise topic in detail and provide tips and answers to these types of questions.
WEBCAST: Noise Optimization in Sensor Signal Conditioning Circuits (Part II)
This is the second part of a two-part series that explores the topic of signal noise in detail.
Webcast: Noise Optimization in Sensor Signal Conditioning Circuits, Part III
Expanding upon the material previously presented in "Optimizing Noise in the Sensor Signal Path" Parts I & II, this Webcast addresses some of the specific questions and areas of additional interest, raised by viewers.

Analog Dialogue (4)

"Rules of the Road" for High-Speed Differential ADC Drivers
(Analog Dialogue, Vol. 43, No. 5, 2009)
Ask The Application Engineer 36, Wideband A/D Converter Front-End Design Considerations II: Amplifier-or Transformer Drive for the ADC?
(Analog Dialogue, Volume 41 February 2007)
Ask the Applications Engineer - 39: Zero Drift Operational Amplifiers
Demystifying Auto-Zero Amplifiers
- Part 1: How do they work? is there a downside?
  (Analog Dialogue, Vol. 34, No. 2, March, 2000)
- Part 2: Here are some design ideas.
  (Analog Dialogue, Vol. 34, No. 3, May, 2000)

SUPPLEMENTAL RESOURCES - CN0061: DC-Coupled, Single-Ended-to-Differential Conversion Using the AD8138 Low Distortion Differential ADC Driver and AD7357 Dual, 4.2 MSPS, 14-Bit SAR ADC

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