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- DollaTek MAX9814 Electret MIC Microphone Ampl...
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Preces #:
131658467
DollaTek MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino
Preces #:
131658467
€ 16
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from Lielbritānija
0 ratings
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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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What Stands Out
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.
Produkta informācija
- 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
| Manufacturer | DollaTek |
| Manufacturer reference | SIYECAO |
| Package Dimensions | 10.5 x 10.5 x 3.4 cm; 10 g |
| Guaranteed software updates until | unknown |
Who Should Buy?
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Arduino Hobbyists
Great for hobbyists creating audio projects, allowing easy integration and enhanced sound capture with automatic gain control.
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Sound Projects
Ideal for sound-sensitive projects like audio recording systems or voice-activated devices, offering clear audio amplification.
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DIY Electronics
Perfect for DIY enthusiasts who want to experiment with microphone applications, providing versatile use in various projects.
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Professional Audio Work
Not suitable for professional studio use where high fidelity and precision are required beyond basic amplification.
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Large Scale Events
Inadequate for large venues or events needing high output power and coverage, as it is designed for smaller applications.
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Complex Installations
May not fit complicated audio setups needing extensive features, as it focuses on simplicity and basic functionality.
PRODUKTA APRAKSTS
Vai jums ir kādi jautājumi? Terzet ar mums
Klientu jautājumi un atbildes
-
jautājums:
What devices can the MAX9814 be used with?
atbildi: It can be used with Bluetooth headsets, digital still cameras, video cameras, entertainment systems, IP phones, and portable recorders. -
jautājums:
What is the supply voltage range for the MAX9814?
atbildi: The supply voltage range is from 2.7V to 5.5V. -
jautājums:
How compact is the MAX9814 module?
atbildi: 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. **
Customer Reviews & Ratings
43 klientu vērtējumi
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5 zvaigzne
55%
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4 zvaigzne
24%
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3 zvaigzne
13%
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2 zvaigzne
0%
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1 zvaigzne
8%
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Dalieties savās domās ar citiem klientiem
Pros
- 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
Mīnusi
- Significant noise when the auto gain control activates, particularly with weak signals
Product Price History
Svarīga informācija
- Ierobežojumi: attiecībā uz produktiem, kas tiek nosūtīti starptautiski, lūdzu, ņemiet vērā, ka jebkura ražotāja garantija var nebūt derīga; ražotāja servisa iespējas var nebūt pieejamas; produktu rokasgrāmatas, instrukcijas un drošības brīdinājumi var nebūt galamērķa valsts valodās; produkti (un pavadošie materiāli) var nebūt izstrādāti saskaņā ar galamērķa valsts standartiem, specifikācijām un marķēšanas prasībām; un produkti var neatbilst galamērķa valsts spriegumam un citiem elektriskajiem standartiem (ja nepieciešams, nepieciešams adapteris vai pārveidotājs). Par to, lai produktu varētu likumīgi ievest galamērķa valstī, ir atbildīgs saņēmējs. Pasūtot no Ubuy vai tā saistītajiem uzņēmumiem, saņēmējs ir ierakstu importētājs, un viņam jāievēro visi galamērķa valsts tiesību akti un noteikumi.
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€ 16
Pasūtiet tūlīt un saņemiet to Monday, jūnijs 29
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Funkcijas un priekšrocības
- High-quality microphone amplifier with automatic gain control (AGC).
- Three selectable gain settings (40dB, 50dB, 60dB).
- Low input noise density and low total harmonic distortion (0.04%).
- Programmable attack time and release ratio for fine-tuning.
- Compact 14-pin TDFN package, ideal for space-limited projects.
- Extended operating temperature range from -40°C to +85°C.