AD8251
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AD8251

10 MHz, G = 1, 2, 4, 8 iCMOS® Programmable Gain Instrumentation Amplifier

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 3
1ku List Price Starting From $5.90
Features
  • Small package: 10-lead MSOP
  • Programmable gains: 1, 2, 4, 8
  • Digital or pin-programmable gain setting
  • Wide supply: ±5 V to ±15 V
  • Excellent dc performance
    High CMRR: 98 dB (minimum), G = 8
    Low gain drift: 10 ppm/°C (maximum)
    Low offset drift: 1.8 μV/°C (maximum), G = 8

EXCELLENT AC PERFORMANCE

  • Fast settling time: 785 ns to 0.001% (maximum)
  • High slew rate: 20 V/μs (minimum)
  • Low distortion: −110 dB THD at 1 kHz,10 V swing
  • High CMRR over frequency: 80 dB to 50 kHz (minimum)
  • Low noise: 18 nV/√Hz, G = 10 (maximum)
  • Low power: 4 mA
Additional Details
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The AD8251 is an instrumentation amplifier with digitally programmable gains that has GΩ input impedance, low output noise, and low distortion, making it suitable for interfacing with sensors and driving high sample rate analog-to-digital converters (ADCs). It has high bandwidth of 10 MHz, low THD of −110 dB, and fast settling time of 785 ns (maximum) to 0.001%. Offset drift and gain drift are guaranteed to 1.8 μV/°C and 10 ppm/°C, respectively, for G = 8. In addition to its wide input common voltage range, it boasts a high common-mode rejection of 80 dB at G = 1 from dc to 50 kHz. The combination of precision dc performance coupled with high speed capabilities makes the AD8251 an excellent candidate for data acquisition. Furthermore, this monolithic solution simplifies design and manufacturing and boosts performance of instrumentation by maintaining a tight match of internal resistors and amplifiers.

The AD8251 user interface consists of a parallel port that allows users to set the gain in one of two different ways (see Figure 1 in data sheet for the functional block diagram). A 2-bit word sent via a bus can be latched using the WR input. An alternative is to use transparent gain mode where the state of logic levels at the gain port determines the gain.

The AD8251 is available in a 10-lead MSOP package and is specified over the −40°C to +85°C temperature range, making it an excellent solution for applications where size and packing density are important considerations.

Applications

  • Data acquisition
  • Biomedical analysis
  • Test and measurement
  • Part Models 3
    1ku List Price Starting From $5.90

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    Documentation

    Documentation

    Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
    AD8251ARMZ
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    AD8251ARMZ-R7
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    AD8251ARMZ-RL
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    Product Lifecycle

    PCN

    May 15, 2012

    - 10_0006

    Halogen Free Material Change for mini SOIC Products

    AD8251ARMZ

    PRODUCTION

    AD8251ARMZ-R7

    PRODUCTION

    AD8251ARMZ-RL

    PRODUCTION

    Nov 16, 2009

    - 06_0157

    Qualification of the 8" H6 Thin Film BiPolar Wafer Fab Process at Analog Devices, Limerick, Ireland

    AD8251ARMZ

    PRODUCTION

    AD8251ARMZ-R7

    PRODUCTION

    Sep 11, 2009

    - 09_0146

    Die revision of the AD8250, AD8251 and the AD8253 to include Polyimide coating

    AD8251ARMZ

    PRODUCTION

    AD8251ARMZ-R7

    PRODUCTION

    AD8251ARMZ-RL

    PRODUCTION

    Filter by Model

    reset

    Reset Filters

    Part Models

    Product Lifecycle

    PCN

    May 15, 2012

    - 10_0006

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    Halogen Free Material Change for mini SOIC Products

    AD8251ARMZ

    PRODUCTION

    AD8251ARMZ-R7

    PRODUCTION

    AD8251ARMZ-RL

    PRODUCTION

    Nov 16, 2009

    - 06_0157

    arrow down

    Qualification of the 8" H6 Thin Film BiPolar Wafer Fab Process at Analog Devices, Limerick, Ireland

    AD8251ARMZ

    PRODUCTION

    AD8251ARMZ-R7

    PRODUCTION

    Sep 11, 2009

    - 09_0146

    arrow down

    Die revision of the AD8250, AD8251 and the AD8253 to include Polyimide coating

    AD8251ARMZ

    PRODUCTION

    AD8251ARMZ-R7

    PRODUCTION

    AD8251ARMZ-RL

    PRODUCTION

    Software & Part Ecosystem

    Software & Part Ecosystem

    Evaluation Kit

    Evaluation Kits 2

    reference details image

    EVAL-AD8251

    AD8251 Evaluation Board

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    EVAL-AD8251

    AD8251 Evaluation Board

    AD8251 Evaluation Board

    Features and Benefits

    • Does not require software to operate
    • Runs from dual supply (±7 to ±15 V)
    • Gain selection through DIP switches
    • Numerous test points for external stimulus
    • Signal paths use SMA connectors

    Product Detail

    The AD8251-EVALZ user guide details how the AD8251- EVALZ evaluation board evaluates the AD8251. The user guide outlines the basic connections required to evaluate the AD8251 and describes the switch settings available to obtain desired outputs.

    Many configuration options are available on the AD8251- EVALZ evaluation board that allow additional input filtering and output filtering if there is a noisy environment. The logic control is covered with an on-board 5.0 V regulator and a dual in-line package (DIP) switch. However, these logic signals can be overridden and clipped on by way of the on-board test points if the DIP switch has each position set to open.

    reference details image

    EVAL-ADMX2001

    High-Performance Precision Impedance Analyzer Measurement Module

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    EVAL-ADMX2001

    High-Performance Precision Impedance Analyzer Measurement Module

    High-Performance Precision Impedance Analyzer Measurement Module

    Features and Benefits

    • Complex impedance measurements
      • DC, 0.2Hz to 10MHz
    • 0.05% Basic Relative Accuracy
    • Wide measurement range
      • Resistance from 100μΩ to 20MΩ
      • Capacitance from 100aF to 160F
      • Inductance from 1nH to 1600H
    • Programmable test signal
      • 16-bit amplitude adjustment up to 2.25Vpk
      • Frequency resolution of 0.2Hz
      • 16-bit DC bias setting up to ±2.5V
    • DC resistance measurements
    • 18 impedance measurement formats for C, R, L, Z and Y
    • Automated multi-point and parametric sweeps
    • Calibration and fixture compensation functions
      • Automated calibration routines for measurement traceability
      • Calibration coefficient storage in non-volatile memory
      • Compensation eliminates the effect of fixture parasitics

    For a complete evaluation solution, both boards must be purchased:

    • ADMX2001B
    • EVAL-ADMX2001EBZ

    Product Detail

    The ADMX2001 is a measurement module that simplifies the development of impedance measurement systems or can be used to enhance the capabilities of existing test platforms. Using high-performance mixed-signal and processing algorithms, the ADMX2001 can measure changes in capacitance as small as 0.1fF and resistance values up to 20MΩ, often required to test semiconductor devices, electronic components, and sensors. Moreover, built-in measurement algorithms enable the ADMX2001 to deliver fully calibrated complex impedance or admittance measurement results in various formats, including parallel and series combinations of resistance, capacitance, and inductance.

    Applications

    • Automated test equipment
    • Semiconductor characterization
    • Wafer acceptance test
    • Electrical Impedance Spectroscopy
    • Impedance network analysis
    • Battery test
    Tools & Simulations

    Tools & Simulations 3

    Reference Designs

    Reference Designs 3

    Isolated Multichannel Data Acquisition Simplified Circuit

    Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals

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    CN0385

    Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals

    CN0385

    Circuits from the lab

    tooltip Info:Circuits from the lab
    Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals

    Features and Benefits

    • Multichannel Isolated Data Acquisition System
    • Industrial Signal Levels
    • 18-bit, 2MSPS Conversion
    • 750kHz Channel Switching Rate

    View Detailed Reference Design external link

    Design & Integration Tools

    pdf icon

    ZIP

    1.53 M

    CN-0393 Simplified Schematic Diagram

    Bank Isolated, 2-Channel, 16-Bit, 500 kSPS, Simultaneous Sampling Signal Chain Featuring μModule Data Acquisition System

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    CN0393

    Bank Isolated, 2-Channel, 16-Bit, 500 kSPS, Simultaneous Sampling Signal Chain Featuring μModule Data Acquisition System

    CN0393

    Circuits from the lab

    tooltip Info:Circuits from the lab
    Bank Isolated, 2-Channel, 16-Bit, 500 kSPS, Simultaneous Sampling Signal Chain Featuring μModule Data Acquisition System

    Features and Benefits

    • 2-channel, 16-bit 500kSPS simultaneous sampling
    • Bank isolated
    • Complete data acquisition system
    View Detailed Reference Design external link

    Design & Integration Tools

    pdf icon

    ZIP

    3.3 M

    Videos

    Thumbnail Image

    Jan 26, 2017

    02:28

    Reducing Challenges in the Precision Conversion Design Cycle

    Multichannel Data Acquisition Simplified Circuit

    Low Power, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial-Level Signals

    zoomopens a dialog

    CN0345

    Low Power, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial-Level Signals

    CN0345

    Circuits from the lab

    tooltip Info:Circuits from the lab
    Low Power, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial-Level Signals

    Features and Benefits

    • 18-Bit 8-Channel Data Acquisition System
    • Single-ended and differential industrial signal levels
    • 750 kSPS per channel switching rate
    • 240mW at maximum sampling rate
    View Detailed Reference Design external link

    Design & Integration Tools

    pdf icon

    ZIP

    1.61 M

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