AD8420
Info : RECOMMENDED FOR NEW DESIGNS
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AD8420

Wide Supply Range, Micropower, Rail-to-Rail Instrumentation Amplifier

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 3
1ku List Price Starting From $1.05
Features
  • Maximum supply current:
    90 μA
  • Minimum CMRR: 100 dB
  • Drives heavy capacitive loads:
    ~700 pF
  • Rail-to-rail output
  • Input voltage range goes below ground
  • Gain set with 2 external resistors
    Can achieve low gain drift at any gain
  • Very wide power supply range
    Single supply: 2.7 V to 36 V
    Dual supply: ±2.7 V to ±18 V
  • Bandwidth (G = 100): 2.5 kHz
  • Input voltage noise: 55 nV/√Hz
  • See data sheet for additional features
Additional Details
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The AD8420 is a low cost, micropower, wide supply range, instrumentation amplifier with a rail-to-rail output and a novel architecture that allows for extremely flexible design. It is optimized to amplify small differential voltages in the presence of large common-mode signals.

The AD8420 is based on an indirect current feedback architecture that gives it an excellent input common-mode range. Unlike conventional instrumentation amplifiers, the AD8420 can easily amplify signals at or even slightly below ground without requiring dual supplies. The AD8420 has rail-to-rail output, and the output voltage swing is completely independent of the input common-mode voltage.

Single-supply operation, micropower current consumption, and rail-to-rail output swing make the AD8420 ideal for battery-powered applications. Its rail-to-rail output stage maximizes dynamic range when operating from low supply voltages. Dual-supply operation (±15 V) and low power consumption make the AD8420 ideal for a wide variety of applications in medical or industrial instrumentation.

The AD8420 is available in an 8-lead MSOP package. Performance is specified over the full temperature range of −40°C to +85°C, and the part is operational from −40°C to +125°C

APPLICATIONS

  • Bridge amplifiers
  • Pressure Measurement
  • Medical instrumentation
  • Portable data acquisition
  • Multichannel systems
Part Models 3
1ku List Price Starting From $1.05

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD8420ARMZ
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AD8420ARMZ-R7
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AD8420ARMZ-RL
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Product Lifecycle

PCN

Jan 5, 2015

- 14_0246

Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

AD8420ARMZ

PRODUCTION

AD8420ARMZ-R7

PRODUCTION

AD8420ARMZ-RL

PRODUCTION

Dec 15, 2014

- 14_0269

AD8420 Data Sheet Change

AD8420ARMZ

PRODUCTION

AD8420ARMZ-R7

PRODUCTION

AD8420ARMZ-RL

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Jan 5, 2015

- 14_0246

arrow down

Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

AD8420ARMZ

PRODUCTION

AD8420ARMZ-R7

PRODUCTION

AD8420ARMZ-RL

PRODUCTION

Dec 15, 2014

- 14_0269

arrow down

AD8420 Data Sheet Change

AD8420ARMZ

PRODUCTION

AD8420ARMZ-R7

PRODUCTION

AD8420ARMZ-RL

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

EVAL-INAMP-ICF-RMZ

AD8237 and AD8420 Evaluation Board

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EVAL-INAMP-ICF-RMZ

AD8237 and AD8420 Evaluation Board

AD8237 and AD8420 Evaluation Board

Product Detail

The EVAL-INAMP-ICF-RMZ offers users the option of evaluating the AD8237 or the AD8420 indirect current feedback (ICF) instrumentation amplifiers individually or connected to adjacent boards in an application. This evaluation board ships with both instrumentation amplifiers in surface-mount MSOP packages.

  

Reference Quick Start section of user guide UG-513 to get started.

Tools & Simulations

Tools & Simulations 2

Reference Designs

Reference Designs 2

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