CXAR41328 is a MEMS microphone pre-amplifier chip with high integration and excellent performance. The chip adopts advanced micro-electromechanical system technology and low noise analog circuit design, has a wide range of adjustable bias voltage and gain coefficient, and can flexibly adapt to different specifications of MEMS microphone systems. Its excellent signal processing capability and stable output performance make it widely used in consumer electronics, communication equipment and professional voice frequency system.
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[ CXAR41328 ]"
High performance MEMS microphone pre-amplifier CXAR41328-professional audio solution
In today's audio acquisition and processing equipment, the requirements for sound quality are getting higher and higher. Whether it is a smart phone, a smart speaker, a conference system, or a variety of portable recording equipment, high sensitivity and low noise microphone pre-amplifier are the key components to ensure clear sound quality. As an analog output preamplifier designed for high-performance MEMS microphone systems, CXAR41328 is an ideal choice for many audio applications due to its excellent electrical characteristics and flexible configuration capabilities. This article will introduce the technical features, performance advantages and typical application scenarios of CXAR41328 in detail to help you better understand this high-quality component.
I. Product Overview
CXAR41328 is a MEMS microphone pre-amplifier chip with high integration and excellent performance. The chip adopts advanced micro-electromechanical system technology and low noise analog circuit design, has a wide range of adjustable bias voltage and gain coefficient, and can flexibly adapt to different specifications of MEMS microphone systems. Its excellent signal processing capability and stable output performance make it widely used in consumer electronics, communication equipment, professional voice frequency system.
JTM-IC (jtm-ic.com) as a leading integrated circuit supplier in China, it continues to provide customers with high-quality audio solutions such as CXAR41328, helping products achieve breakthroughs in sound quality and reliability.
II. Main functional features
2.1. Wide operating voltage range
CXAR41328 supports a working voltage of 2.3V to 3.6V, which is suitable for a variety of power supply environments, including battery-powered portable devices, and has good power supply adaptability and stability.
2.2. Adjustable bias voltage
The chip provides two independent bias voltage outputs (BIAS1 and BIAS2), the voltage regulation range is 7.5V to 16V, and the step accuracy is 0.3V. Users can flexibly set bias voltage according to the requirements of different MEMS sensors to improve system compatibility.
2.3. Large gain adjustable range
The gain adjustment range of CXAR41328 is-4.0dB to 11dB, and the step is 0.5dB. This design enables the equipment to achieve the best signal amplification effect under different sound pressure environments, giving consideration to sensitivity and dynamic range.
2.4. Broadband and low noise
The frequency response range of the chip is 20Hz to 20kHz, covering the audible range of the human ear, ensuring the complete restoration of the sound signal. The input equivalent noise is only 4μvrms, equivalent to-108dBV, ensuring that the collected audio signal is pure and clear.
2.5. High output capability and low distortion
The maximum output voltage of CXAR41328 can reach 780mVrms(-2.2dBV) under the condition that the total harmonic distortion is less than 10%, and it has good driving capability and signal fidelity.
2.6. Low power consumption design
The chip adopts an energy-saving architecture, which is suitable for mobile devices and Internet of Things terminals with strict requirements on power consumption, and helps to prolong the battery life of the device.
3. Package and pin description
CXAR41328 adopts a compact chip package with a size of 570μm × μm, a PAD size of 60μm × 60μm, a thickness of 1.2 μm, and a scribing channel width of 60μm, suitable for high-density integration and miniaturization equipment design.
Pin configurations are as follows:
· Pin 1 (VDD): the positive electrode of the power supply, located at (μm, μm)
· Pin 2 (OUT): preamplifier signal output, located at (μm, μm)
· Pin 3 (GND): power source, located at (394.10 μm, 70.00 μm)
· Pin 4 (BIAS1): The First bias voltage output is located at (μm, μm)
· Pin 5 (MICIN): MEMS microphone signal input, located at (μm, μm)
· Pin 7 (BIAS2): The Second bias voltage output is located at (μm, μm)
Reasonable pin layout facilitates circuit board wiring and system integration, and improves the flexibility and reliability of the overall design.
IV. Typical application fields
With its high performance and high integration, CXAR41328 is suitable for a variety of audio collection and processing scenarios, including but not limited:
·Smartphones and tablets: improve call and recording quality
·Bluetooth headset and smart wearable device: enables clear voice interaction
·Conference system and speech recognition equipment: ensure far-field pickup effect
·Vehicle-mounted voice system: extract clear voices in complex noise environments
·Home audio and recording pen: provides professional audio collection capabilities
V. Why did you choose CXAR41328?
Among many MEMS preamplifiers, CXAR41328 stands out for its comprehensive performance parameters and flexible configuration capabilities. Its adjustable bias voltage and gain settings enable developers to optimize system performance according to specific application scenarios. At the same time, the chip has the characteristics of low noise, high output and wide frequency response, which also makes it the preferred device in High Fidelity Voice frequency system.
JTM-IC (jtm-ic.com) committed to providing customers with various high-performance integrated circuit products and technical support including CXAR41328. We have a professional technical team and a perfect after-sales service system, which can help customers quickly complete product selection, circuit design and system debugging, and help your project successfully land.
VI. Conclusion
With the popularity of voice interaction and intelligent audio equipment, the requirements for the quality of front-end sound collection are constantly improving. As a fully functional and excellent MEMS CXAR41328, microphone pre-amplifier not only has the basic characteristics of low noise and high sensitivity, but also provides a variety of adjustable parameters to meet diversified system requirements. Choosing JTM-IC means choosing reliable products and professional services. Welcome to our official websitejtm-ic.comLearn more about product information and technical materials, and work with us to create better audio solutions.
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