AD8235
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AD8235

40 μA Micropower Instrumentation Amplifier in WLCSP Package

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 1
1ku List Price Starting From $1.87
Features
  • Low power
    • 40 μA maximum supply current
    • 6 nA shutdown current
  • Low input currents
    • 50 pA input bias current
    • 25 pA input offset current
  • High Common Mode Rejection Ratio (CMRR)
    • 110 dB CMRR , G = 100
  • Space saving
    • WLCSP package
  • Zero input crossover distortion
  • Versatile
    • Rail-to-rail input and output
    • Shutdown
    • Gain set with single resistor (G = 5 to 200)
  • AD8236: μSOIC package version of AD8235
Additional Details
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The AD8235 is the smallest and lowest power instrumentation amplifier in the industry. It is available in a 1.5 mm × 2.2 mm wafer level chip scale package (WLCSP). The AD8235 draws a maximum quiescent current of 40 μA. In addition, it draws a maximum 500 nA of current during shutdown mode, making it an excellent instrumentation amplifier for battery powered, portable applications.

The AD8235 can operate on supply voltages as low as 1.8 V. The input stage allows for wide rail-to-rail input voltage range without the crossover distortion, common in other designs. The rail-torail output enables easy interfacing to ADCs.

The AD8235 is an excellent choice for signal conditioning. Its low input bias current of 50 pA and high CMRR of 110 dB (G = 100) offer tremendous value for its size and low power. It is specified over the extended industrial temperature range of −40°C to 125°C.

Applications

  • Medical instrumentation
  • Low-side current sense
  • Portable electronics
Part Models 1
1ku List Price Starting From $1.87

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD8235ACBZ-P7
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Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

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Part Models

Product Lifecycle

PCN

Feb 28, 2012

- 11_0175

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Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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AD8235ACBZ-EVALZ

Evaluating the AD8235 40 μA, Micropower Instrumentation Amplifier

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AD8235ACBZ-EVALZ

Evaluating the AD8235 40 μA, Micropower Instrumentation Amplifier

Evaluating the AD8235 40 μA, Micropower Instrumentation Amplifier

Features and Benefits

  • Simple evaluation of the AD8235
  • CR2032 battery provision
  • On-board voltage reference using the LTC2063 low power amplifier
  • 2 in × 1.35 in small form factor 

Product Detail

The AD8235ACBZ-EVALZ contains a CR2032 battery provision that is capable of powering up the AD8235 40 μA, micropower instrumentation amplifier and the LTC2063 low power operational amplifier. This feature allows the AD8235ACBZ-EVALZ to be a standalone board ready for product evaluation. 

The AD8235ACBZ-EVALZ design allows the user to easily adjust the gain resistors and common discrete components on the board. The on-board male headers set the AD8235ACBZ-EVALZ to different configurations using the jumper shunt. 

The AD8235ACBZ-EVALZ allows battery-powered configuration to showcase the portable nature of the AD8235. In battery-powered configuration, the LTC2063 acts as the voltage reference for the single-supply configuration. 

For full details on the AD8235, see the AD8235 data sheet, which must be consulted in conjunction with this user guide when using the AD8235ACBZ-EVALZ. 

Applications

  • Fast and easy product evaluation and characterization
  • Portable system applications
Tools & Simulations

Tools & Simulations 4

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.

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