• OPA2277U/2K5 SOIC (D)-8
OPA2277U/2K5 SOIC (D)-8


1MHz Bandwidth Operational Amplifier General Purpose in 8-SOIC IC


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Overview of OPA2277U/2K5

The OPA2277U/2K5 is a precision dual operational amplifier featuring low offset voltage, low noise, and high precision. This IC is designed for applications requiring accurate signal amplification and processing in instrumentation, sensor interfaces, and precision measurement systems.


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

  • V+ : Positive Power Supply
  • V- : Negative Power Supply

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the OPA2277U/2K5 IC for a visual representation.

Key Features

  • Precision Amplification: The OPA2277U/2K5 offers high precision amplification for accurate signal processing.
  • Low Offset Voltage: With low offset voltage specifications, this IC ensures minimal errors in signal amplification.
  • Low Noise: The operational amplifiers in this IC provide low noise operation for clean signal processing.
  • Dual Amplifiers: Featuring two independent amplifiers in a single package, providing flexibility for dual-channel applications.
  • Wide Supply Voltage Range: Operates from a single supply voltage ranging from +2.5V to +18V, suitable for various systems.

Note: For detailed technical specifications, please refer to the OPA2277U/2K5 datasheet.


  • Precision Measurement Systems: Ideal for use in precision measurement instruments requiring high accuracy.
  • Signal Conditioning: Suitable for sensor signal conditioning and accurate amplification of sensor outputs.
  • Audio Equipment: Can be used in audio amplifiers and high-fidelity audio systems for clean signal amplification.


The OPA2277U/2K5 is designed to provide precise and low-noise amplification for applications demanding high accuracy and performance. It ensures reliable and high-quality signal processing in various electronic systems.

Usage Guide

  • Power Supply: Connect the positive (V+) and negative (V-) power supplies to the respective pins.
  • Input Connections: Apply the input signals to the non-inverting( +IN1, +IN2) and inverting (-IN1, -IN2) inputs for each amplifier.
  • Output Connection: Utilize the output pins (OUT1, OUT2) to retrieve the amplified signals from the respective amplifiers.

Frequently Asked Questions

Q: Is the OPA2277U/2K5 suitable for low-noise applications?
A: Yes, the OPA2277U/2K5 offers low noise characteristics, making it suitable for applications requiring minimal noise interference.


For similar functionalities, consider these alternatives to the OPA2277U/2K5:

  • OPA2227U/2K5: This operational amplifier provides similar precision and features as the OPA2277U/2K5.
  • OPA2111U/2K5: Another precision dual operational amplifier option with comparable performance specifications.



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) 4 Vos (offset voltage at 25°C) (max) (mV) 0.02
GBW (typ) (MHz) 1 Features Small Size
Slew rate (typ) (V/µs) 0.8 Rail-to-rail No
Offset drift (typ) (µV/°C) 0.1 Iq per channel (typ) (mA) 0.79
Vn at 1 kHz (typ) (nV√Hz) 8 CMRR (typ) (dB) 140
Rating Catalog Operating temperature range (°C) -40 to 85
Input bias current (max) (pA) 1000 Iout (typ) (A) 0.035
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) 0.5
Output swing headroom (to positive supply) (typ) (V) -1.2 THD + N at 1 kHz (typ) (%) 0.002

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