ADA4084-2

RECOMMENDED FOR NEW DESIGNS

30 V, Low Noise, Rail-to-Rail Input/Output, Low Power Operational Dual Amplifier

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Overview

  • 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
  • Long-term offset voltage drift (10,000 hours): 3 μV typical
  • Temperature hysteresis: 4 μV typical

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/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/ADA4084-4 are specified over the industrial temperature range of −40°C to +125°C.

The single ADA4084-1 is available in the 5-lead SOT-23 and 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/ADA4084-4 are members of a growing series of high voltage, low noise op amps offered by Analog Devices, Inc.

Applications

  • Battery-powered instrumentation
  • High-side and low-side sensing
  • Power supply control and protection
  • Telecommunications
  • Digital-to-analog converter (DAC) output amplifiers
  • Analog-to-digital converter (ADC) input buffers


ADA4084-2

30 V, Low Noise, Rail-to-Rail Input/Output, Low Power Operational Dual Amplifier

ADA4084-2 Pin Configuration ADA4084-2 Pin Configuration ADA4084-2 Pin Configuration ADA4084-2 Pin Configuration
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Tools & Simulations

LTspice


Models for the following parts are available in LTspice:

  • ADA4084-2

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

Open Tool

Signal Chain Designer

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Open Tool

SPICE Model 1

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
EVAL-OPAMP-2

EVAL-OPAMP-2 Evaluation Board

Product Details

The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.

  • EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
  • EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
  • EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8

EVAL-OPAMP-2
EVAL-OPAMP-2 Evaluation Board
EVAL-OPAMP-2 EVAL-OPAMP-2 EVAL-OPAMP-2

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