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AD8045:  3 nV/√Hz Ultralow Distortion Voltage Feedback High Speed Amplifier

Product Details


The AD8045 is a unity gain stable voltage feedback amplifier with ultralow distortion, low noise, and high slew rate. With a spurious-free dynamic range of -90 dBc @ 20 MHz, the AD8045 is an ideal solution in a variety of applications, including ultrasound, ATE, active filters, and ADC drivers. ADI's proprietary next generation XFCB process and innovative architecture enables such high performance amplifiers.

The AD8045 features a low distortion pin out for the LFCSP, which improves second harmonic distortion and simplifies the layout of the circuit board.

The AD8045 amplifier is available in a 3 mm x 3 mm LFCSP as well as the standard 8-lead SOIC. Both packages feature an exposed paddle that provides a low thermal resistance path to the PCB. This enables a more efficient heat transfer, and increases reliability. The AD8045 works over the extended industrial temperature range (-40°C to +125°C).

FEATURES and BENEFITS

  • Ultralow distortion
  • SFDR
    -101 dBc @ 5 MHz
    -90 dBc @ 20 MHz
    -63 dBc @ 70 MHz
  • Third-order intercept
    43 dBm @ 10 MHz
  • Low noise
    3 nV/√Hz
    3 pA/√Hz
  • High speed
    1 GHz, -3 dB bandwidth (G = +1)
    1350 V/µs slew rate
    7.5 ns settling time to 0.1%
  • Standard and low distortion pin out
  • Supply current: 15 mA
  • Offset voltage: 1.0 mV max
  • Wide supply voltage range: 3.3V to 12V

Connection Diagram for AD8045

Documentation

Title Content Type File Type
AD8045: 3 nV/√Hz Ultra Low Distortion, High Speed Op Amp Data Sheet (Rev A, 09/2004) (pdf, 661 kB) Data Sheets PDF
AN-0993: Active Filter Evaluation Board for Analog Devices, Inc., - Low Distortion Pinout Op Amps  (pdf, 107 kB) Application Notes PDF
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications  (pdf, 166 kB) Application Notes PDF
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.
Application Notes PDF
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.
Application Notes PDF
MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps  (pdf, 62 kB) Tutorials PDF
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 PDF
MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps  (pdf, 66 kB) Tutorials PDF
MT-056: High Speed Voltage Feedback Op Amps  (pdf, 109 kB) Tutorials PDF
MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR  (pdf, 104 kB) Tutorials PDF
MT-052: Op Amp Noise Figure: Don't Be Misled  (pdf, 60 kB) Tutorials PDF
MT-050: Op Amp Total Output Noise Calculations for Second-Order System  (pdf, 38 kB) Tutorials PDF
MT-049: Op Amp Total Output Noise Calculations for Single-Pole System  (pdf, 40 kB) Tutorials PDF
MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth  (pdf, 81 kB) Tutorials PDF
MT-047: Op Amp Noise  (pdf, 72 kB) Tutorials PDF
MT-033: Voltage Feedback Op Amp Gain and Bandwidth  (pdf, 251 kB) Tutorials PDF
MT-032: Ideal Voltage Feedback (VFB) Op Amp  (pdf, 65 kB) Tutorials PDF
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.
Webcasts WEBCAST
UG-083: Evaluation Board User Guide for Single, High Speed Operational Amplifiers
(8-Lead, 3 mm × 3 mm LFCSP with Dedicated Feedback Pin)
 (pdf, 209 kB)
User Guides PDF
UG-084: Evaluation Board for Single, High Speed Operational Amplifiers
(8-Lead, SOIC with Dedicated Feedback Pin and Exposed Paddle)
 (pdf, 243 kB)
User Guides PDF
A Practical Guide to High-Speed Printed-Circuit-Board Layout
By John Ardizzoni, Analog Dialogue 39-09, September 2005
Analog Dialogue HTML
High Speed Amplifiers Selection Table  (pdf, 77 kB) Product Selection Guide PDF
I've noticed a new pinout on some of your high-speed op amps. Why the change after all these years? FAQs/RAQs HTML
What's the difference between, power-down, shutdown, standby, sleep mode or disable? FAQs/RAQs HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
dBm/dBu/dBv Calculator
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
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.
ADIsim Design/Simulation Tools HTML
OpAmp Stability
An applet for demonstrating stability effects in opamp buffers.
Design Calculators HTML
AD8045 SPICE Macro Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

AD8045 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8045ACPZ-R2 Status: Production 8 ld LFCSP (3x3mm) 8 Ind Reel, 250 $2.38 $2.38 Y  Material Info PCN Purchase
AD8045ACPZ-REEL Status: Last Time Buy 8 ld LFCSP (3x3mm) 8 Ind Reel, 5000 - $1.41 Y  Material Info PCN/PDN Purchase
AD8045ACPZ-REEL7 Status: Production 8 ld LFCSP (3x3mm) 8 Ind Reel, 1500 - $1.41 Y  Material Info PCN Purchase Sample
AD8045ARD-REEL Status: Last Time Buy 8 ld SOIC-EP 8 Ind Reel, 2500 - - N  Material Info PCN/PDN Purchase
AD8045ARDZ Status: Production 8 ld SOIC-EP 8 Ind Tube, 98 $1.66 $1.41 Y  Material Info PCN Purchase Sample
AD8045ARDZ-REEL Status: Last Time Buy 8 ld SOIC-EP 8 Ind Reel, 2500 - $1.41 Y  Material Info PCN/PDN Purchase
AD8045ARDZ-REEL7 Status: Production 8 ld SOIC-EP 8 Ind Reel, 1000 - $1.41 Y  Material Info PCN Purchase
Price Table Help

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.

AD8045 Evaluation Boards
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8045ACP-EBZ Status: Production 8-lead LFCSP Evaluation Board $18.25 Yes -
AD8045ARD-EBZ Status: Production 8-Lead SOIC Evaluation Board $18.25 Yes -
AD8045ARDZ Status: Production SOIC 150 MIL W/THERMAL PAD $2.32 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

Check Inventory & Purchase

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