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Instrumentation amplifier with single power supply


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Overview of AD620SQ/883B

The AD620SQ/883B is a precision instrumentation amplifier IC known for its high accuracy and reliability in signal conditioning applications.It offers exceptional performance in amplifying low-level signals with high precision,making it ideal for sensor interfaces,medical instrumentation,and industrial measurement systems.


(Note:The pin configuration below is a general representation.Refer to the specific datasheet for precise details.)

  • IN+:Non-Inverting Input for Amplification
  • IN-:Inverting Input for Amplification
  • V+:Positive Power Supply Voltage
  • V-:Negative Power Supply Voltage
  • REF:Reference Voltage Output
  • OUT:Amplified Output
  • NC:No Connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the AD620SQ/883B IC for a visual representation.

Key Features

  • High Precision Amplification: The AD620SQ/883B offers high precision amplification of signals, ensuring accurate signal processing in instrumentation applications.
  • Low Offset Voltage and Drift: With low offset voltage and drift characteristics, this IC maintains signal integrity over time and temperature variations.
  • Wide Input Voltage Range: The IC supports a wide input voltage range, allowing for versatile signal amplification from various sensor sources.
  • High Common-Mode Rejection Ratio (CMRR): Featuring a high CMRR, the AD620SQ/883B suppresses common-mode noise for clean signal output.
  • Low Noise: This instrumentation amplifier IC operates with low noise levels, enabling clear signal amplification without adding noise to the output.

Note: For detailed technical specifications, please refer to the AD620SQ/883B datasheet.


  • Sensor Interface: Ideal for amplifying signals from sensors, transducers, and other measurement devices.
  • Medical Instrumentation: Suitable for medical equipment requiring precise signal amplification, such as ECG and EEG monitors.
  • Industrial Measurement Systems: Used in industrial applications for accurate measurement and monitoring of various parameters.


The AD620SQ/883B is a precision instrumentation amplifier that provides accurate and reliable amplification of low-level signals, making it essential for applications requiring high precision signal conditioning.

Usage Guide

  • Power Supply: Connect the positive (V+) and negative (V-) power supply pins to the respective voltage sources.
  • Input Connections: Connect the input signal source to the non-inverting (IN+) and inverting (IN-) input pins for signal amplification.
  • Output Handling: The amplified output signal is available at the OUT pin for further processing or measurement.

Frequently Asked Questions

Q: What is the typical gain range of the AD620SQ/883B?
A: The AD620SQ/883B offers a gain range typically from 1 to 1000, providing flexibility in signal amplification.

Q: Is the AD620SQ/883B suitable for low-power applications?
A: Yes, the AD620SQ/883B is designed for low power consumption, making it suitable for battery-operated and portable instrumentation systems.


For similar functionalities, consider these alternatives to the AD620SQ/883B:

  • INA128: A precision instrumentation amplifier IC with similar performance characteristics to the AD620SQ/883B, suitable for high-accuracy applications.
  • AD8221: This instrumentation amplifier from Analog Devices offers high precision and versatility in signal conditioning applications, comparable to the AD620SQ/883B.


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category Instrumentation Amplifiers RoHS N
Series AD620 Number of Channels 1 Channel
3 dB Bandwidth 1 MHz CMRR - Common Mode Rejection Ratio 80 dB
Ib - Input Bias Current 2 nA Vos - Input Offset Voltage 125 uV
Minimum Operating Temperature - 55 C Maximum Operating Temperature + 125 C
Mounting Style Through Hole Package / Case CDIP-8
Amplifier Type Instrumentation Amplifier Brand Analog Devices
Dual Supply Voltage +/- 2.3 V to +/- 18 V Height 3.56 mm (Max)
Length 10.29 mm (Max) Maximum Dual Supply Voltage +/- 18 V
Minimum Dual Supply Voltage +/- 2.3 V Operating Supply Voltage +/- 2.3 V to +/- 18 V
Pd - Power Dissipation 650 mW Product Instrumentation Amplifiers
Product Type Instrumentation Amplifiers Factory Pack Quantity 48
Subcategory Amplifier ICs Supply Type Dual
Width 7.87 mm (Max) Unit Weight 0.745586 oz

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