DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
The MAX9814 is a high-quality microphone amplifier with automatic gain control (AGC) and low-noise microphone bias, perfect for a range of applications from Bluetooth headsets to professional recording devices.
DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
Número do item: 131658467

DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino

Número do item: 131658467

R$ 104

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The MAX9814 is a high-quality microphone amplifier with automatic gain control (AGC) and low-noise microphone bias, perfect for a range of applications from Bluetooth headsets to professional recording devices.
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Note: Step Up Voltage Transformer required for using electronics products of Reino Unido store (230 V). Recommended power converters COMPRAR AGORA.

Destaques do Produto

Auto Gain Control
The MAX9814 module intelligently adjusts its gain levels automatically, ensuring optimal audio capture in varying environments, which eliminates the need for manual adjustments.
Easy Integration
Designed for seamless compatibility with Arduino, this microphone amplifier module simplifies the process of adding high-quality audio input to projects, making it accessible for hobbyists and developers alike.
Compact Design
The small form factor of the DollaTek MAX9814 module allows for easy incorporation into space-constrained projects, ensuring that users can enhance their devices without sacrificing design or functionality.

Detalhes do produto

Compre DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain online ao melhor preço no Ubuy Brasil. Obtenha ofertas exclusivas, descontos e opção de entrega rápida.
  • The MAX9814 is a high-quality microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. The device features a low-noise preamplifier, variable gain amplifier (VGA), output amplifier, microphone-bias-voltage generator and AGC control circuitry.
  • The low-noise preamplifier has a fixed 12dB gain, while the VGA gain automatically adjusts from 20dB to 0dB, depending on the output voltage and the AGC threshold. The output amplifier offers selectable gains of 8dB, 18dB, and 28dB. With no compression, the cascade of the amplifiers results in an overall gain of 40dB, 50dB, or 60dB.
  • A trilevel digital input programs the output amplifier gain. An external resistive divider controls the AGC threshold and a single capacitor programs the attack/release times.
  • A trilevel digital input programs the ratio of attack-to-release time. The hold time of the AGC is fixed at 30ms. The low-noise microphone-bias-voltage generator can bias most electret microphones.
  • The MAX9814 is available in the space-saving, 14-pin TDFN package. This device is specified over the -40°C to +85°C extended temperature range. MAX9814: Simplified Block Diagram MAX9814: Simplified Block Diagram Enlarge+

Product Technical Details

Manufacturer‎DollaTek
Manufacturer reference‎SIYECAO
Package Dimensions‎10.5 x 10.5 x 3.4 cm; 10 g
Guaranteed software updates until‎unknown

Para quem é indicado?

Suitable For
  • Arduino Hobbyists

    Great for hobbyists creating audio projects, allowing easy integration and enhanced sound capture with automatic gain control.

  • Sound Projects

    Ideal for sound-sensitive projects like audio recording systems or voice-activated devices, offering clear audio amplification.

  • DIY Electronics

    Perfect for DIY enthusiasts who want to experiment with microphone applications, providing versatile use in various projects.

Not Suitable For
  • Professional Audio Work

    Not suitable for professional studio use where high fidelity and precision are required beyond basic amplification.

  • Large Scale Events

    Inadequate for large venues or events needing high output power and coverage, as it is designed for smaller applications.

  • Complex Installations

    May not fit complicated audio setups needing extensive features, as it focuses on simplicity and basic functionality.

DESCRIÇÃO DO PRODUTO

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Perguntas e Respostas do cliente

  • pergunta: What devices can the MAX9814 be used with?

    responda: It can be used with Bluetooth headsets, digital still cameras, video cameras, entertainment systems, IP phones, and portable recorders.
  • pergunta: What is the supply voltage range for the MAX9814?

    responda: The supply voltage range is from 2.7V to 5.5V.
  • pergunta: How compact is the MAX9814 module?

    responda: The module comes in a compact size of 26mm x 14mm x 8mm and weighs only 2.0g.

DollaTek Preamps Editorial Review

The DollaTek MAX9814 Electret Microphone Amplifier Module has garnered a mix of reviews that highlight its functionality, performance, and several caveats. Users appreciate its capability to provide high gain amplification, making it especially useful for applications where clear audio output is critical. One reviewer noted its effectiveness in their setup, achieving a notable 40dB increase in amplification, which contributes to its reputation as a solid choice for audio projects. While many users find the performance of the amplifier satisfying, especially for speech applications, some have expressed concerns regarding its auto gain control (AGC) feature. There are mentions of significant noise output when the AGC activates, particularly when dealing with weak sound signals. This could be a limiting factor for users working in quieter environments, as the undesirable noise can overshadow the desired audio. The size and design of the module are praised, including its integration capabilities with various microcontrollers like Arduino and Raspberry Pi. However, some customers have pointed out a lack of technical documentation online. They believe that having a comprehensive guide explaining all functions, especially the AGC, would enhance the user experience significantly. The absence of vital components, such as an output capacitor, has also been noted, leading users to take additional steps in their setups. Despite these drawbacks, the overall sentiment leans positively toward the DollaTek MAX9814, particularly for those who appreciate the potential of DIY audio projects. **

Comentários e avaliações dos clientes

4.2
43 Avaliações dos clientes
  • 5 Estrela
    55%
  • 4 Estrela
    24%
  • 3 Estrela
    13%
  • 2 Estrela
    0%
  • 1 Estrela
    8%

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Prós

  • High gain amplification (up to 40dB)
  • Clear sound output
  • Compact design suitable for integration into various projects
  • Good compatibility with platforms like Arduino and Raspberry Pi
  • Excellent price for the performance offered

Contras

  • Significant noise when the auto gain control activates, particularly with weak signals

Histórico de preço do produto

Informações importantes

  • Limitações: para envios internacionais de produtos, observe que qualquer garantia do fabricante pode não ser válida; as opções de serviço do fabricante podem não estar disponíveis; manuais, instruções e avisos de segurança do produto podem não estar no idioma do país de destino; os produtos (e os materiais que os acompanham) podem não ser projetados de acordo com os padrões, especificações e requisitos de rotulagem do país de destino; e os produtos podem não estar em conformidade com a voltagem do país de destino e outros padrões elétricos (exigindo o uso de um adaptador ou conversor, se apropriado). O destinatário é responsável por garantir que o produto possa ser importado legalmente para o país de destino. Ao fazer o pedido no Ubuy ou em suas afiliadas, o destinatário é o importador do registro e deve cumprir todas as leis e regulamentos do país de destino.
  • Nem todos os produtos listados no Ubuy estão à venda, pois o Ubuy é um mecanismo de busca global. Os produtos estão sujeitos às regulamentações de exportação/comércio.