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ADA4084-2:  30 V, Low Noise, Rail-to-Rail I/O, Low Power Operational Amplifiers

Product Details

Product Status:Recommended for New Designs

The ADA4084-1 (single), ADA4084-2 (dual), and ADA4084-4 (quad) are single-supply, 10 MHz bandwidth amplifiers featuring rail-to-rail inputs and outputs. They are guaranteed to operate from +3 V to +30 V (or ±1.5 V to ±15 V).

These amplifiers are well suited for single-supply applications requiring both ac and precision dc performance. The combination of wide bandwidth, low noise, and precision makes the ADA4084-1, ADA4084-2, and ADA4084-4 useful in a wide variety of applications, including filters and instrumentation.

Other applications for these amplifiers include portable telecommunications equipment, power supply control and protection, and use as amplifiers or buffers for transducers with wide output ranges. Sensors requiring a rail-to-rail input amplifier include Hall effect, piezoelectric, and resistive transducers.

The ability to swing rail to rail at both the input and output enables designers to build multistage filters in single-supply systems and to maintain high signal-to-noise ratios.

The ADA4084-1, ADA4084-2, and ADA4084-4 are specified over the industrial temperature range of −40°C to +125°C. The single ADA4084-1 is available in the 8-lead SOIC; the dual ADA4084-2 is available in the 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP surface-mount packages; and the ADA4084-4 is offered in the 14-lead TSSOP and 16-lead LFCSP.

The ADA4084-1, ADA4084-2, and ADA4084-4 are members of a growing series of high voltage, low noise op amps offered by Analog Devices, Inc.

  • Battery-powered instrumentation
  • High-side and low-side sensing
  • Power supply control and protection
  • Telecommunications
  • DAC output amplifier
  • ADC input buffer


  • Rail-to-rail input/output
  • Low power: 0.625 mA typical per amplifier at ±15 V
  • Gain bandwidth product:
    15.9 MHz at AV =100 typical
  • Unity-gain crossover:
    9.9 MHz typical
  • −3 dB closed-loop bandwidth:
    13.9 MHz typical at ±15 V
  • Low offset voltage:
    100 μV maximum (SOIC)
  • Unity-gain stable
  • High slew rate: 4.6 V/μs typical
  • Low noise:
    3.9 nV/√Hz typical at 1 kHz

Pin Configuration Diagram for ADA4084-2

Similar Products

  • ADA4077-2: available as a dual channel version in two grades offering lower offset and drift with higher linearity within the Input Voltage Range for dual supply applications.
  • ADA4500-2: offers similar speed and precision in a high linearity, zero-crossover, 5V Op Amp.
  • ADA4096-2: a lower power, 30V, rail-to-rail input/output Op Amp.
  • ADA4091-2: lower power, rail-to-rail input/output Op Amp.


Title Content Type File Type
ADA4084-1/ADA4084-2/ADA4084-4: 30 V, Low Noise, Rail-to-Rail Input/Output, Low Power Operational Amplifiers Data Sheet (Rev F, 01/2015) (pdf, 945 kB) Data Sheets PDF
AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance  (pdf, 199 kB) Application Notes PDF
AN-849: Using Op Amps as Comparators  (pdf, 117 kB) Application Notes PDF
Op Amp Applications Handbook Design Handbooks HTML
MT-054: Precision Op Amps  (pdf, 57 kB) Tutorials PDF
MT-052: Op Amp Noise Figure: Don't Be Misled  (pdf, 60 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-035: Op Amp Inputs, Outputs, Single-Supply, and Rail-to-Rail Issues  (pdf, 115 kB) Tutorials PDF
SAR ADC & Driver Quick-Match Guide  (pdf, 251 kB)
Find drivers for ADI's most popular single-ended and differential SAR ADCs based on your specific application conditions.
Product Selection Guide PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
OpAmp Error Budget Calculator
An online tool to illustrate range, gain and accuracy issues in simple opamp buffers.
Amplifier Error Budget Analysis HTML
Analog Filter Wizard 2.0
The Analog Filter Wizard™ helps you design a low-pass, high-pass, band-pass or band-stop filter with actual op amps. It then simulates the filter’s performance with these op amps in real time. You can ask the tool to optimize for power, noise, or voltage range, and it will pick op amps and passive components appropriately. Or you can adjust the components manually yourself.
ADIsim Design/Simulation Tools 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
Analog Bridge Wizard
The Analog Bridge Wizard recommends amplifiers and ADC's for your bridge application. Find out which op-amp or in-amp is best for your design, and view the error budget analysis for that solution.
ADIsim Design/Simulation Tools HTML
ADA4084 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

ADA4084-2 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADA4084-2ACPZ-R7 Status: Production 8 ld LFCSP (3x3mm w/1.6x1.6 EP) 8 Ind Reel, 1500 - $2.85 Y  Material Info PCN Purchase Sample
ADA4084-2ACPZ-RL Status: Production 8 ld LFCSP (3x3mm w/1.6x1.6 EP) 8 Ind Reel, 5000 - $2.85 Y  Material Info PCN Purchase
ADA4084-2ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $3.49 $2.85 Y  Material Info PCN Purchase Sample
ADA4084-2ARMZ-R7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $2.85 Y  Material Info PCN Purchase
ADA4084-2ARMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $2.85 Y  Material Info PCN Purchase
ADA4084-2ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $3.49 $2.85 Y  Material Info PCN Purchase Sample
ADA4084-2ARZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $2.85 Y  Material Info PCN Purchase
ADA4084-2ARZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $2.85 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.

EVAL-OPAMP-2 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-PRAOPAMP-2CPZ Status: Production Dual CP-8 lead LFCSP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RMZ Status: Production Dual RM-8 lead MSOP Evaluation Board $20.19 Yes -
EVAL-PRAOPAMP-2RZ Status: Production Dual R-8 lead SOIC Evaluation Board $20.19 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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