Products > Integrated Circuits (ICs) > Equalizers > MSGEQ7

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Seven Band Graphic Equalizer

Manufacturer : MIXED/HYNIX
Package/Case : DIP-8
Product Categories : Equalizers
Datasheet: MSGEQ7 Datasheet (PDF)
RoHs Status: Lead free/RoHS Compliant
In-stock: 1230


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MSGEQ7 Product Details

MSGEQ7 Description

The MSGEQ7 is a seven-band graphic equalizer chip that can be used to analyze audio signals and divide them into seven frequency bands. It's specifically designed for audio spectrum analysis and is often used in projects involving music visualization, sound-reactive LED displays, and similar applications. The seven band graphic equalizer IC is a CMOS chip that divides the audio spectrum into seven bands, 63Hz, 160Hz, 400Hz, 1kHz, 2.5kHz, 6.25kHz and 16kHz. The seven frequencies are peak detected and multiplexed to the output to provide a DC representation of the amplitude of each band.

No external components are needed to select the filter respons es. Only an off chip resistor and capacitor are needed to select the on chip clock oscillator frequency. The filter center frequencies track this frequency.

In addition to the coupling and decoupling capacitors, there is no requirement for any additional external components. The chip's power supply range is flexible, spanning from 2.7 to 5.5 volts, with optimal performance achieved at 5 volts. Remarkably, this device boasts an extremely low quiescent current, typically consuming less than 1mA, making it an ideal choice for portable audio gadgets. The multiplexor operation is efficiently managed through a reset and strobe mechanism, enabling multiplexor readout with just two pins. Furthermore, it's worth noting that the multiplexor readout rate also regulates the decay time, resulting in a 10% decay per read, eliminating the necessity for extra external pins to perform this task. For more details about the circuit diagram can check the MSGEQ7 datasheet.

MSGEQ7 Pinout

Pin Description

  • Pin 1: VDD(Positive Power Supply Typically 5 Volts)

  • Pin 2: VSS(Negative Power Supply Typically 0 Volts)

  • Pin 3: OUT(Multiplexed DC Output)

  • Pin 4: STROBE(Channel Selection Pin)

  • Pin 5: IN(Audio Input)

  • Pin 6: GND(Internally Generated Ground Reference.Typically 2.5V)

  • Pin 7: RESET(Resets Multiplexor)

  • Pin 8: CKIN(Clock Oscillator Pin)



  • Seven frequency bands: The MSGEQ7 divides the audio spectrum into seven bands, typically ranging from low frequencies (bass) to high frequencies (treble).

  • Low Power Consumption: The low power consumption feature is a hallmark of this component, making it an energy-efficient choice for a range of applications. This design ensures that power usage remains minimal, allowing for prolonged operation and reduced energy costs.

  • Only Two External Components: With the advantage of requiring only two external components, this component simplifies the assembly process and reduces the overall component count. This streamlined approach not only eases integration but also enhances system reliability by minimizing potential points of failure.

  • On Chip Ground Reference: The incorporation of an on-chip ground reference provides a stable and consistent point of reference for circuit operation. This feature ensures that the circuit operates reliably, even in variable conditions, while simplifying the overall design and minimizing the need for additional external components.

  • Switched - Capacitor Filters: Utilizing switched-capacitor filters, this component offers precise and versatile filtering capabilities. These filters enable efficient signal conditioning, allowing for tailored responses and improved signal quality in various applications.

  • 3.3 or 5 volt Operation: This component's flexible voltage operation, accommodating both 3.3 and 5 volts, offers adaptability to different system requirements. Whether you need lower power consumption or higher performance, this component can seamlessly fit into your design. 

  • 20 dB of Gain Typical: Boasting a typical gain of 20 dB, this component amplifies signals effectively, ensuring that even weak signals are strengthened to meet the desired output requirements. This feature enhances signal integrity and maximizes overall system performance.

  • On Chip Oscillator: Incorporating an on-chip oscillator simplifies the clock generation process, ensuring precise timing for various functions. This oscillator's presence eliminates the need for external timing components, streamlining circuit design and reducing complexity.

  • Output Multiplexor: The built-in output multiplexor offers the convenience of selecting and routing signals with ease. This functionality enhances system flexibility and simplifies signal routing, reducing the need for external multiplexing components.

  • Variable Decay Time: The variable decay time feature allows for dynamic adjustment of decay characteristics, ensuring that the component adapts to changing operational requirements. This capability enhances control and customization in applications where decay time is critical.

  • 8 Pin Package: Packaged in an 8-pin configuration, this component combines compactness with functionality. Its small form factor makes it suitable for space-constrained designs while retaining all the essential features and capabilities required for your applications.

  • Analog output: It provides analog voltage outputs for each of the seven bands, which can be used to represent the strength of audio in those frequency bands.

  • Simple interface: The chip is relatively easy to use, requiring minimal external components to function.

  • Suitable for DIY projects: It's a popular choice among hobbyists and DIY electronics enthusiasts for building audio-related projects.

MSGEQ7 Products


  • Portable Stereos: The MSGEQ7 integrated circuit plays a pivotal role in enhancing the audio experience of portable stereos. Its ability to precisely analyze and process audio signals enables these devices to deliver well-balanced sound output, making music on the go a more enjoyable and immersive experience.

  • Music visualization: The MSGEQ7 is often used to create audio-reactive visualizations where LED displays or other visual elements respond to the music's frequency components.

  • Car Stereos: Incorporating the MSGEQ7 into car stereo systems allows for advanced audio processing within the vehicle. This integration ensures that the music played through car speakers is optimized for the acoustics of the car interior, resulting in a rich and clear audio experience during drives.

  • Hi-Fi Stereos: High-fidelity (Hi-Fi) stereo systems benefit immensely from the MSGEQ7's capabilities. This component contributes to the precise tuning and equalization of audio signals, enabling Hi-Fi enthusiasts to appreciate the subtle nuances of their music collection with exceptional clarity and accuracy.

  • Spectrum Analyzers: Within the realm of spectrum analyzers, the MSGEQ7 serves as a fundamental component for signal analysis. Its role in processing and extracting relevant frequency information from incoming signals aids engineers and technicians in conducting in-depth spectral analysis for a wide range of applications, from telecommunications to RF design and research.

  • Sound-activated lighting: It can be used in sound-activated lighting systems where lights change color or intensity based on the audio input.

MSGEQ7 Equivalent Parts

MSGEQ5: The MSGEQ5 stands as a notable counterpart to the MSGEQ7, offering similar functionality in the realm of audio spectrum analysis. Like its counterpart, the MSGEQ5 is adept at breaking down audio signals into frequency bands, making it an excellent choice for applications that require precise audio analysis and equalization. Its versatility and compatibility make it a preferred alternative for various electronic designs.

MSGEQ9: In the sphere of audio spectrum analysis, the MSGEQ9 emerges as another commendable option, closely related to the MSGEQ7. This component offers comparable capabilities for analyzing audio signals and dividing them into distinct frequency bands. It proves valuable in applications demanding accurate spectral data and provides designers with an alternative solution for their electronic projects.

FFT (Fast Fourier Transform) analysis chips: FFT (Fast Fourier Transform) analysis chips present a broader category of components designed for advanced signal processing and frequency analysis. While distinct from the MSGEQ7, these chips serve a similar purpose by transforming time-domain signals into the frequency domain. This enables engineers and developers to gain comprehensive insights into signal characteristics, making them invaluable in applications requiring complex spectral analysis and manipulation. FFT analysis chips encompass a range of options, each tailored to specific project requirements, thus offering versatile alternatives to the MSGEQ7 for diverse electronic ventures.


What is the purpose of the MSGEQ7 chip?

The MSGEQ7 chip is designed to analyze audio signals and divide them into distinct frequency bands, making it valuable for spectrum analysis and audio equipment.

How many frequency bands can MSGEQ7 analyze?

Typically, MSGEQ7 can analyze audio signals across seven frequency bands, providing detailed spectral information.

Can MSGEQ7 be used in real-time audio processing?

Yes, MSGEQ7 can be interfaced with microcontrollers to enable real-time audio processing, allowing for dynamic responses to audio inputs.

Can I interface this IC with an Arduino or Raspberry Pi?

Absolutely, it's commonly used with microcontrollers like Arduino and Raspberry Pi.

Technical Parameters

  • Product Name
  • MSGEQ7
  • Product Type
  • Audio Spectrum Analyzer IC
  • Manufacturer
  • Frequency Bands
  • 7
  • Input Type
  • Analog Audio
  • Output Type
  • Analog Voltage for Each Band
  • Frequency Range
  • 20Hz to 20kHz
  • Applications
  • Audio Equalizers, Visualizers, Spectrum Analyzers

MSGEQ7 Related Products

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1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that MSGEQ7 is the original manufacturer or agent of MIXED/HYNIX?
We have a professional business development department to strictly test and verify the qualifications of MIXED/HYNIX original manufacturers and agents. All MIXED/HYNIX suppliers must pass the qualification review before they can publish their MSGEQ7 devices; we pay more attention to the channels and quality of MSGEQ7 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MSGEQ7 chips? Including MIXED/HYNIX original factory information, application, MSGEQ7 pictures?
You can use Jotrin's intelligent search engine, or filter by Equalizers category, or find it through MIXED/HYNIX brand manufacturer page.
Q: Are the MIXED/HYNIX's MSGEQ7 price and stock displayed on the platform accurate?
The MIXED/HYNIX's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for MSGEQ7, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Q: What is the process for returns or replacement of MSGEQ7?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MSGEQ7 we delivered, we will accept the replacement or return of the MSGEQ7 only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of MSGEQ7.
(3)The MSGEQ7 is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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