• OPA2228U SOIC-8


Op Amp Dual Precision Amplifier ±18V/36V 8-Pin SOIC Tube

Quantity Unit Price(USD) Ext. Price
1 $8.748 $8.75
200 $3.386 $677.20
500 $3.267 $1,633.50
1000 $3.208 $3,208.00


*The price is for reference only.
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  • Part Number : OPA2228U

  • Package/Case : SOIC-8

  • Brands : TI

  • Components Categories : Precision op amps (Vos<1mV)

  • Datesheet : OPA2228U DataSheet (PDF)

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Overview of OPA2228U

The OPA2228U is a precision operational amplifier (op-amp) with ultra-low offset voltage and low noise, making it ideal for high-accuracy analog signal processing applications. It offers high performance in terms of precision, stability, and noise levels, making it suitable for various precision instrumentation and sensor interface applications.


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

  • A: Non-inverting input
  • B: Inverting input
  • +: Positive power supply
  • -: Negative power supply
  • OUT: Output

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the OPA2228U op-amp for a visual representation of its usage.

Key Features

  • Precision Performance: The OPA2228U offers ultra-low offset voltage and low noise for high-accuracy signal processing.
  • Wide Operating Voltage Range: Operates over a wide voltage range, providing flexibility in various voltage supply configurations.
  • High Gain Bandwidth: Provides high gain bandwidth product for maintaining signal integrity in amplification applications.
  • Low Input Bias Current: Features low input bias current for minimizing errors in sensor interface and measurement systems.
  • High Slew Rate: Offers a high slew rate for fast response in transient signal processing.

Note: For detailed technical specifications, please refer to the OPA2228U datasheet.


  • Precision Instrumentation: Ideal for precision measurement and instrumentation applications requiring high accuracy and stability.
  • Sensor Signal Conditioning: Suitable for amplifying and conditioning sensor signals in sensor interface circuits.
  • Active Filters: Used in active filter designs for signal processing and frequency response shaping.


The OPA2228U is a precision op-amp designed to provide accurate and low-noise signal amplification and processing for applications where precision and stability are essential.

Usage Guide

  • Power Supply: Connect the positive and negative power supply pins (+, -) to appropriate voltage levels.
  • Input Connections: Connect the non-inverting (A) and inverting (B) input pins for desired signal processing.
  • Output Handling: Use the output pin (OUT) to retrieve the amplified and processed signal.

Frequently Asked Questions

Q: What is the typical offset voltage of the OPA2228U?
A: The OPA2228U has a typical offset voltage in the range of microvolts, ensuring high precision in signal processing tasks.

Q: Can the OPA2228U be used in temperature-sensitive applications?
A: Yes, the OPA2228U offers good temperature stability, making it suitable for applications where temperature variations need to be minimized.


For similar functionalities, consider these alternatives to the OPA2228U:

  • OPA2277: A precision op-amp with low noise and high stability, suitable for precision instrumentation applications.
  • LT1012: This op-amp offers precision performance and low offset voltage for high-accuracy signal processing applications.



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

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Vos (offset voltage at 25°C) (max) (mV) 0.075
GBW (typ) (MHz) 33 Features Decompensated
Slew rate (typ) (V/µs) 11 Rail-to-rail No
Offset drift (typ) (µV/°C) 0.1 Iq per channel (typ) (mA) 3.7
Vn at 1 kHz (typ) (nV√Hz) 3 CMRR (typ) (dB) 138
Rating Catalog Operating temperature range (°C) -40 to 85
Input bias current (max) (pA) 10000 Iout (typ) (A) 0.045
Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 2
Input common mode headroom (to positive supply) (typ) (V) -2 Output swing headroom (to negative supply) (typ) (V) 2
Output swing headroom (to positive supply) (typ) (V) -2 THD + N at 1 kHz (typ) (%) 0.00005

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