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AD8426:  Wide Supply Range, Rail-to-Rail Output Instrumentation Amplifier

Product Details

Product Status:Recommended for New Designs

The AD8426 is a dual-channel, low cost, wide supply range instrumentation amplifier that requires only one external resistor to set any gain from 1 to 1000.

The AD8426 is designed to work with a variety of signal voltages. A wide input range and rail-to-rail output allow the signal to make full use of the supply rails. Because the input range can also go below the negative supply, small signals near ground can be amplified without requiring dual supplies. The AD8426 operates on supplies ranging from ±1.35 V to ±18 V for dual supplies and 2.2 V to 36 V for a single supply.

The robust AD8426 inputs are designed to connect to real-world sensors. In addition to its wide operating range, the AD8426 can handle voltages beyond the rails. For example, with a ±5 V supply, the part is guaranteed to withstand ±35 V at the input with no damage. Minimum and maximum input bias currents are specified to facilitate open-wire detection.

The AD8426 is designed to make PCB routing easy and efficient. The two amplifiers are arranged in a logical way so that typical application circuits have short routes and few vias. Unlike most chip scale packages, the AD8426 does not have an exposed metal pad on the bottom of the part, which frees additional space for routing and vias. The AD8426 offers two in-amps in the equivalent board space of a typical MSOP package.

The AD8426 is ideal for multichannel, space-constrained industrial applications. Unlike other low cost, low power instrumentation amplifiers, the AD8426 is designed with a minimum gain of 1 and can easily handle ±10 V signals. With its space-saving LFCSP package and 125°C temperature rating, the AD8426 thrives in tightly packed, zero airflow designs.

The AD8226 is the single channel version of the AD8426.

APPLICATIONS

  • Industrial process controls
  • Bridge amplifiers
  • Medical instrumentation
  • Portable data acquisition
  • Multichannel systems

FEATURES and BENEFITS

  • 2 channels in a small,
    4 mm × 4 mm LFCSP
  • LFCSP package has no
    metal pad
    -- More routing room
    -- No current leakage to pad
  • Gain set with 1 external resistor
    -- Gain range: 1 to 1000
  • Input voltage goes below ground
  • Inputs protected beyond supplies
  • Very wide power supply range
    -- Single supply: 2.2 V to 36 V
    -- Dual supply: ±1.35 V to ±18 V
  • Bandwidth (G = 1): 1 MHz
  • CMRR (G = 1): 80 dB minimum
  • Input noise: 24 nV/√Hz
  • Typical supply current
    (per amp): 350 μA
  • Specified temperature range: −40°C to +125°C

AD8426 Pin Configuration

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD8426 SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

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

AD8426 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD8426ACPZ-R7 Status: Production 16 ld LFCSP (4x4x.85mm, no exposed pad) 16 Ind Reel, 1500 $2.62 $2.20 Y  Material Info PCN Purchase
AD8426ACPZ-WP Status: Production 16 ld LFCSP (4x4x.85mm, no exposed pad) 16 Ind Tray, 64 $2.62 $2.20 Y  Material Info PCN Purchase
AD8426BCPZ-R7 Status: Production 16 ld LFCSP (4x4x.85mm, no exposed pad) 16 Ind Reel, 1500 $3.93 $3.30 Y  Material Info Notify Me Purchase
AD8426BCPZ-WP Status: Production 16 ld LFCSP (4x4x.85mm, no exposed pad) 16 Ind Tray, 64 $3.93 $3.30 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.


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