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Operational Amplifiers (Op Amps) - Application Notes

Operational Amplifiers (Op Amps)

AN-1026: High Speed Differential ADC Driver Design Considerations (pdf, 355 kB)
AN-0993: Active Filter Evaluation Board for Analog Devices, Inc., - Low Distortion Pinout Op Amps (pdf, 107 kB)
AN-0992: Active Filter Evaluation Board for Differential Amplifiers (pdf, 85 kB)
AN-0991: Active Filter Evaluation Board for Standard SOIC Op Amps (pdf, 99 kB)
AN-0990: Terminating a Differential Amplifier in Single-Ended Input Applications (pdf, 181 kB)
AN-968: Current Sources: Options and Circuits (pdf, 131 kB)
AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance (pdf, 268 kB)
AN-938: Digital and Analog Measurement Units for Digital CMOS Microphone Preamplifier ASICs (pdf, 75 kB)
AN-937: Designing Amplifiers Circuits: How to Avoid Common Problems (pdf, 187 kB)
AN-934: 60 dB Wide Dynamic Range, Low Frequency AGC Circuit Using a Single VGA (pdf, 317 kB)
AN-900: Enhancing the Performance of Pedometers Using a Single Accelerometer (pdf, 208 kB)
AN-851: A WiMax Double Downconversion IF Sampling Receiver Design (pdf, 262 kB)
AN-849: Using Op Amps as Comparators (pdf, 117 kB)
AN-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs (pdf, 203 kB)
AN-797: Quad Precision Op Amp Evaluation Board (pdf, 218 kB)
AN-763: Dual Universal Precision Op Amp Evaluation Board (pdf, 172 kB)
AN-751: High Speed Universal Op Amp Evaluation Board with Exposed Paddle (pdf, 326 kB)
This application note covers two evaluation boards, the EVAL-ADOPAMP-1CP-E (for 8-lead LFCSPs) and the EVAL-ADOPAMP-1R-E (for 8-lead SOICs)
AN-735: Universal Precision Op Amp Evaluation Board in SOT-23 Package (pdf, 384 kB)
AN-734: Universal Precision Op Amp Evaluation Board in SC70 Package (pdf, 690 kB)
AN-733: Universal Precision Op Amp Evaluation Board in MSOP Package (pdf, 624 kB)
AN-732: Universal Precision Op Amp Evaluation Board in SOIC Package (pdf, 271 kB)
AN-720: AD8099 Evaluation Boards (pdf, 214 kB)
AN-692: Universal Precision Op Amp Evaluation Board (pdf, 621 kB)
AN-677: Universal Evaluation Board for High Speed Op Amps in CSP Packages (pdf, 155 kB)
AN-676: Universal Evaluation Board of High Speed Op Amps in SC70 Packages (pdf, 160 kB)
AN-675: Universal Evaluation Board for Dual High Speed Op Amps in SOT-23-8 Packages (pdf, 159 kB)
AN-674: Universal Evaluation Board for High Speed Op Amps in SOT-23-5/SOT-23-6 Packages (pdf, 163 kB)
AN-649: Using the Analog Devices Active Filter Design Tool (pdf, 5301 kB)
AN-648: Universal Evaluation Board for High Speed Op Amps - Dual in MSOP package (pdf, 152 kB)
AN-647: Universal Evaluation Board for High Speed Op Amps - Dual SOIC Package (pdf, 95 kB)
AN-646: Universal Evaluation Board for High Speed Op Amps - Single in SOIC Package (pdf, 284 kB)
AN-602: Using the ADXL202 in Pedometer and Personal Navigation Applications (pdf, 81 kB)
AN-589: Ways to Optimize the Performance of a Difference Amplifier (pdf, 92 kB)
This Application Note presents several ways to build and optimize the performance of a discrete difference amplifier. It also recommends amplifiers that will make the overall solution cost/performance competitive with monolithic instrument amplifiers.
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.
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (pdf, 166 kB)
AN-579: Versatile Programmable Amplifiers Using Digital Potentiometers with Nonvolatile Memory (pdf, 90 kB)
AN-573: OP07 Is Still Evolving (pdf, 155 kB)
AN-560: 0: Low Voltage Amplifier (pdf, 35 kB)
The AD8517/AD8527 operates at supply voltages as low as 1.8 V. This amplifier is ideal for battery-powered applications since it can operate at the end of discharge voltage of most popular batteries.
AN-551: Power Management of the ADV7172/ADV7173 Video Encoder (pdf, 38 kB)
AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems (pdf, 228 kB)
Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.
AN-414: Low Cost, Low Power Devices for HDSL Applications (pdf, 41 kB)
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps (pdf, 55 kB)
So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs). A new architecture called an input clamp amp (ICA) offers superior clamping accuracy and lower distortion.
AN-359: Settling Time of Operational Amplifiers (pdf, 632 kB)
AN-358: Noise and Operational Amplifier Circuits (pdf, 593 kB)
AN-357: Operational Integrators (pdf, 272 kB)
AN-356: User's Guide to Applying and Measuring Operational Amplifier Specifications (pdf, 538 kB)
AN-349: Keys to Longer Life for CMOS (pdf, 89 kB)
Here's How CMOS Can be Protected Against Abuse
AN-348: Avoiding Passive-Component Pitfalls (pdf, 931 kB)
The Wrong Passive Component Can Derail Even the Best Op Amp or Data Converter. Here Are Some Basic Traps to Watch For.
AN-282: Fundamentals of Sampled Data Systems (pdf, 2131 kB)
AN-280: Mixed Signal Circuit Technologies (pdf, 2101 kB)
Considers problems which arise when reality (& Murphy) intervene in a design which otherwise seems satisfactory in terms of theory and modeling.
AN-257: Careful Design Tames High Speed Op Amps (pdf, 611 kB)
AN-256: Accurately Testing Op Amp Settling Times (pdf, 106 kB)
AN-253: Find Op Amp Noise with Spreadsheet (pdf, 77 kB)
AN-245: Instrumentation Amplifiers Solve Unusual Design Problems (pdf, 543 kB)
Traditionally Considered Only for Transducer-Conditioning Applications, Instrumentation Amplifiers Bring Unique Performance Benefits to a Range of Other Applications as Well.
AN-244: A User's Guide to I.C. Instrumentation Amplifiers (pdf, 522 kB)
AN-232: Bootstrapped IC Substrate Lowers Distortion in JFET Op Amps (pdf, 205 kB)
AN-216: Video VCAs and Keyers Using the AD834 and AD811 (pdf, 367 kB)
AN-214: Ground Rules for High Speed Circuits (pdf, 356 kB)
Layout and Wiring Are Critical in Video Converter Circuits.
AN-211: The Alexander Current-Feedback Audio Power Amplifier (pdf, 1154 kB)
AN-202: An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change (pdf, 76 kB)
AN-138: SPICE-Compatible Op Amp Macro-Models (pdf, 838 kB)
AN-132: OP470 SPICE Macro-Model (pdf, 260 kB)
AN-117: OP-42 Advanced SPICE Macro-Model (pdf, 168 kB)
AN-112: AB-112: Single Resistor Controls Wien Bridge Oscillator Frequency (pdf, 18 kB)
Frequency control can be added to the conventional Wien Bridge Circuit by adding an op amp inverter.
AN-111: AB-111: Single-Supply Wien Bridge Oscillator (pdf, 66 kB)
Wien Bridge Oscillators require only one op amp, important in battery-operation. This circuit operates from a single 9V battery.
AN-109: AB-109: High Speed Precision Rectifier (pdf, 24 kB)
The low offsets and excellent load driving capability of the OP-27 are key advantages in this precision rectifier circuit.
AN-108: 08: JFET-Input Amps are Unrivaled for Speed and Accuracy (pdf, 499 kB)
AN-107: Active Feedback Improves Amplifier Phase Accuracy (pdf, 777 kB)
AN-106: 06: A Collection of Amp Applications (pdf, 1094 kB)
Examines Some of the Numerous and Widely Used Applications of the Operational Amplifier
AN-25: Applying the OP06 Op Amp As a High Precision Comparator (pdf, 200 kB)
AN-21: 4-20 mA Digital-to-Process Current Transmitter (pdf, 161 kB)
Describes a 3 I.C. Digital to 4-20 mA Current Output Circuit (DAC08, REF01 and OP221)