ADA4805-1
Info : RECOMMENDED FOR NEW DESIGNS
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ADA4805-1

0.2 µV/°C Offset Drift, 105 MHz Low Power, Low Noise, Rail-to-Rail Amplifier

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $1.12
Features
  • Low input offset voltage: 125 μV (maximum)
  • Low input offset voltage drift 0.2 μV/°C (typical) 1.5 μV/°C (maximum)
  • Ultralow supply current: 495 μA/amplifier
  • Wide supply voltage range: 3 V to 10 V
  • High speed performance −3 dB bandwidth: 105 MHz Slew rate: 160 V/μs
    0.1% settling time: 35 ns
  • Rail-to-rail outputs
  • Input common-mode range: −VS − 0.1 V to +VS − 1 V
  • Low noise: 5.9 nV/√Hz at 100 kHz; 0.6 pA/√Hz at 100 kHz
  • Low distortion: −102 dBc/−116 dBc HD2/HD3 at 100 kHz
  • Low input bias current: 470 nA (typical)
  • Dynamic power scaling high speed turn-on time: 3 μs (maximum) fully settled
  • Small packaging 6-lead SC70, 6-lead SOT-23
Additional Details
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The ADA4805-1 is a high speed voltage feedback rail-to-rail output amplifier with an exceptionally low quiescent current of 495 μA, making it ideal for low power, high resolution data conversion systems. Despite being low power, this amplifier provides excellent overall performance. It offers a high bandwidth of 105 MHz at a gain of 1, high slew rate of 160 V/μs, and a low input offset voltage of 125 μV maximum.

A shutdown pin allows further reduction of the quiescent supply current to 3 μA. For power sensitive applications, the shutdown mode offers very fast turn-on time of 3 μs from shutdown to fully on (output settled to 16 bits). This allows the user to dynamically manage the power of the amplifier by turning the amplifier off between ADC samples.

The Analog Devices, Inc., proprietary extra fast complementary bipolar (XFCB) process allows for both low voltage and low current noise (5.9 nV/√Hz, 0.6 pA/√Hz). The ADA4805-1 operates over a wide range of supply voltages from ±1.5 V to ±5 V, as well as from single 3 V and 5 V supplies, making it ideal for high speed, low power instruments.

The ADA4805-1 amplifier is available in both a 6-lead SOT-23 and a 6-lead SC70 package. These amplifiers are rated to work over the industrial temperature range of −40°C to +125°C.

Applications

  • High resolution, high precision ADC drivers
  • Battery-powered instrumentation
  • Micropower active filters
  • Portable point of sales terminals
  • Active RFID readers
  • Photo multipliers
  • ADC reference buffers
Part Models 4
1ku List Price Starting From $1.12

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADA4805-1AKSZ-R2
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ADA4805-1AKSZ-R7
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ADA4805-1ARJZ-R2
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ADA4805-1ARJZ-R7
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-HSAMP-1

Universal Evaluation Board for Single High Speed Operational Amplifiers

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EVAL-HSAMP-1

Universal Evaluation Board for Single High Speed Operational Amplifiers

Universal Evaluation Board for Single High Speed Operational Amplifiers

Features and Benefits

  • Enables quick breadboarding/prototyping
  • User defined circuit configuration
  • Edge mounted Subminiature Version A (SMA) connector
  • provisions Easy connection to test equipment and other circuits

Product Detail

The Universal Single High Speed Amplifier Evaluation Boards are bare boards that enable users to quickly prototype a variety of amplifier circuits, which minimizes risk and reduces time to market. These boards are all RoHs Compliant. See ordering guide below on what board to order by lead count and package.

Tools & Simulations

Tools & Simulations 7

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.

Reference Designs

Reference Designs 2

Low Power Data Acquisition System

Ultralow Power, General-Purpose, Multichannel Data Acquisition System with Energy Harvesting Circuit and Alert Function

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Circuits from the lab

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Ultralow Power, General-Purpose, Multichannel Data Acquisition System with Energy Harvesting Circuit and Alert Function

Features and Benefits

  • Ultralow Power Data Acquisition System
  • 4-Channels, 12-Bit Resolution
  • Energy Harvesting Power Circuit
View Detailed Reference Design external link

Design & Integration Tools

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Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Lock-In Amplifiers

Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Digital Synchronous Detection

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CN0363

Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Digital Synchronous Detection

CN0363

Circuits from the lab

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Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Digital Synchronous Detection

Features and Benefits

  • Dual channel RGB colorimeter 
  • High sensitivity low noise transimpedance amplifier 
  • Programmable gain TIA 
  • Digital synchronous detection
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Design & Integration Tools

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