The AD8065/AD8066 FastFET™ amplifiers are voltage feedback amplifiers with FET inputs offering high performance and ease of use. The AD8065 is a single amplifier, and the AD8066 is a dual amplifier. These amplifiers are developed in the Analog Devices, Inc. proprietary XFCB process and allow exceptionally low noise operation (7.0 nV/√Hz and 0.6 fA/√Hz) as well as very high input impedance.
With a wide supply voltage range from 5 V to 24 V, the ability to operate on single supplies, and a bandwidth of 145 MHz, the AD8065/AD8066 are designed to work in a variety of applications. For added versatility, the amplifiers also contain rail-to-rail outputs.
Despite the low cost, the amplifiers provide excellent overall performance. The differential gain and phase errors of 0.02% and 0.02°, respectively, along with 0.1 dB flatness out to 7 MHz, make these amplifiers ideal for video applications. Additionally, they offer a high slew rate of 180 V/μs, excellent distortion (SFDR of −88 dBc @ 1 MHz), extremely high common-mode rejection of −100 dB, and a low input offset voltage of 1.5 mV maximum under warmed up conditions. The AD8065/AD8066 operate using only a 6.4 mA/amplifier typical supply current and are capable of delivering up to 30 mA of load current.
The AD8065/AD8066 are high performance, high speed, FET input amplifiers available in small packages: SOIC-8, MSOP-8, and SOT-23-5. They are rated to work over the industrial temperature range of −40°C to +85°C.
Analog Devices introduces the next generation of High Speed Operational Amplifiers (op amps). This new amplifier offers higher performance and lower noise than previous amplifiers. Also new in this category is Analog Devices unique dedicated feedback pin packaging, which lowers distortion, lowers parasitics and simplifies board layout.
|Title||Content Type||File Type|
|AD8065/AD8066: High Performance, 145 MHz FastFET Op Amps Data Sheet (Rev J, 08/2010) (pdf, 541 kB)||Data Sheets|
|AD8065-KGD-CHIP: Low Distortion, High Speed Rail-to-Rail Input/Output Amplifier Data Sheet (Rev 0, 10/2012) (pdf, 177 kB)||Data Sheets|
|AN-108: 08: JFET-Input Amps are Unrivaled for Speed and Accuracy (pdf, 499 kB)||Application Notes|
|AN-649: Using the Analog Devices Active Filter Design Tool (pdf, 5301 kB)||Application Notes|
|AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (pdf, 166 kB)||Application Notes|
|AN-356: User's Guide to Applying and Measuring Operational Amplifier Specifications (pdf, 538 kB)||Application Notes|
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-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.
|CN-0302: Ultra-Fast Settling PLL with RF to 13 GHz (pdf, 208 kB)||Circuit Note|
|CN-0272: 2 MHz Bandwidth PIN Photodiode Preamp with Dark Current Compensation (pdf, 376 kB)||Circuit Note|
|CN-0055: Programmable Gain Element Using the AD5450/AD5451/AD5452/AD5453 Current Output DAC Family (pdf, 135 kB)||Circuit Note|
|CN-0034: Unipolar, Precision DC Digital-to-Analog Conversion Using the AD5426/AD5432/AD5443 8-Bit to12-Bit DACs (pdf, 83 kB)||Circuit Note|
|MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps (pdf, 62 kB)||Tutorials|
|MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters (pdf, 69 kB)||Tutorials|
|MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps (pdf, 66 kB)||Tutorials|
|MT-056: High Speed Voltage Feedback Op Amps (pdf, 109 kB)||Tutorials|
|MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR (pdf, 104 kB)||Tutorials|
|MT-052: Op Amp Noise Figure: Don't Be Misled (pdf, 60 kB)||Tutorials|
|MT-050: Op Amp Total Output Noise Calculations for Second-Order System (pdf, 38 kB)||Tutorials|
|MT-049: Op Amp Total Output Noise Calculations for Single-Pole System (pdf, 40 kB)||Tutorials|
|MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth (pdf, 81 kB)||Tutorials|
|MT-033: Voltage Feedback Op Amp Gain and Bandwidth (pdf, 251 kB)||Tutorials|
|MT-032: Ideal Voltage Feedback (VFB) Op Amp (pdf, 65 kB)||Tutorials|
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.
|UG-127: Universal Evaluation Board for High Speed Op Amps in SOT-23-5/SOT-23-6 Packages (pdf, 273 kB)||User Guides|
|UG-101: Evaluation Board User Guide (pdf, 189 kB)||User Guides|
|High Speed Amplifiers Selection Table (pdf, 77 kB)||Product Selection Guide|
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
|Title||Content Type||File Type|
This calculator converts between standard units of power measurement and signal strength.
|Utilities and Conversions||HTML|
Power Dissipation vs Die Temp
This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
|Utilities and Conversions||HTML|
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.
|ADIsim Design/Simulation Tools||HTML|
Photodiode Preamp Error Budget Tutorial
An online tool to illustrate range, gain and accuracy issues in photodiode preamplifiers.
|Amplifier Error Budget Analysis||HTML|
An applet for demonstrating stability effects in opamp buffers.
|AD8065 SPICE Macro Model||SPICE Models||HTML|
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.