• OPA656U SOIC-8


High Speed Operational Amplifiers Wideband Stable FET-Input

Quantity Unit Price(USD) Ext. Price
1 $7.594 $7.59
10 $6.767 $67.67
30 $6.238 $187.14
100 $5.725 $572.50


*The price is for reference only.
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  • Part Number : OPA656U

  • Package/Case : SOIC-8

  • Brands : TI

  • Components Categories : Instrumentation, OP Amps, Buffer Amps

  • Datesheet : OPA656U DataSheet (PDF)

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Overview of OPA656U

The OPA656U is a high-speed operational amplifier with a wide bandwidth and low noise, ideal for high-frequency and precision signal processing applications. It is designed to provide excellent performance in terms of speed, accuracy, and output drive capability.


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

  • V–: Inverting input
  • V+: Non-inverting input

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the OPA656U operational amplifier for a visual representation.

Key Features

  • High-Speed Operation: The OPA656U offers a high slew rate and wide bandwidth, suitable for high-frequency signal processing.
  • Low Noise: This operational amplifier has low input noise, making it suitable for precision applications.
  • Wide Supply Voltage Range: Operates with a wide supply voltage range for flexibility in various circuit designs.
  • Enhanced Accuracy: Provides high precision and excellent linearity for accurate signal processing.
  • High Output Drive Capability: The OPA656U can drive heavy loads while maintaining signal integrity.

Note: For detailed technical specifications, please refer to the OPA656U datasheet.


  • High-Frequency Signal Processing: Ideal for applications requiring fast signal amplification and processing.
  • Precision Instrumentation: Suitable for precision measurement and instrumentation systems due to its low noise and high accuracy.
  • Active Filters: Used in active filter circuits for signal conditioning and noise filtering.


The OPA656U operational amplifier combines high-speed performance with low noise and wide supply range, making it a versatile choice for demanding signal processing tasks.

Usage Guide

  • Power Supply: Connect the positive and negative power supplies (+Vcc, -Vcc) to the corresponding pins of the OPA656U.
  • Signal Inputs: Connect the input signals to the non-inverting (V+) and inverting (V–) inputs for signal amplification.
  • Output Connection: The amplified output signal is available at the Vout pin of the operational amplifier.

Frequently Asked Questions

Q: What is the typical bandwidth of the OPA656U?
A: The OPA656U offers a bandwidth of X MHz, making it suitable for high-frequency applications.

Q: Can the OPA656U operate with a single power supply?
A: Yes, the OPA656U can operate with a single supply voltage within the specified range, simplifying circuit design.


For similar functionalities, consider these alternatives to the OPA656U:

  • OPA846: A high-speed operational amplifier with similar performance characteristics and wide supply voltage range.
  • OPA211: Precision operational amplifier offering low noise and high accuracy for demanding applications.



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

Architecture FET / CMOS Input, Voltage FB Number of channels 1
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12
GBW (typ) (MHz) 230 BW at Acl (MHz) 500
Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 290
Vn at flatband (typ) (nV√Hz) 7 Vn at 1 kHz (typ) (nV√Hz) 10
Iq per channel (typ) (mA) 14 Vos (offset voltage at 25°C) (max) (mV) 0.6
Rail-to-rail No Rating Catalog
Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 86
Input bias current (max) (pA) 5 Offset drift (typ) (µV/°C) 2
Iout (typ) (mA) 70 2nd harmonic (dBc) 71
3rd harmonic (dBc) 81 Frequency of harmonic distortion measurement (MHz) 5

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