CXAR41330 is an integrated and miniaturized MEMS microphone chip that features a bottom opening and omnidirectional pickup design, providing excellent acoustic performance and stable signal output capability. This product not only performs outstandingly in key indicators such as signal-to-noise ratio and sensitivity, but also has practical features such as low power consumption, long lifespan, and easy installation. It is widely used in devices such as smartphones, smart wearables, voice remote controls, conference systems, etc.
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[ CXAR41330 ]"
CXAR41330: Omnidirectional bottom opening MEMS microphone, ideal for high signal-to-noise ratio and stable output
With the rapid development of applications such as intelligent voice interaction, remote conferencing, and IoT audio collection, MEMS microphones, as the front-end core device for sound signal collection, directly affect the quality of the entire audio system in terms of their performance. JTM-IC (official website:jtm-ic.com）The CXAR41330 is a high-performance analog output MEMS microphone with high signal-to-noise ratio, all-round pickup, and bottom opening design, suitable for scenarios with high audio quality requirements in various compact electronic devices.
1、 Product Overview
CXAR41330 is an integrated and miniaturized MEMS microphone chip that features a bottom opening and omnidirectional pickup design, providing excellent acoustic performance and stable signal output capability. This product not only performs outstandingly in key indicators such as signal-to-noise ratio and sensitivity, but also has practical features such as low power consumption, long lifespan, and easy installation. It is widely used in devices such as smartphones, smart wearables, voice remote controls, conference systems, etc.
2、 Product Features
· high signal-to-noise ratio：65dB(A)， Ensure sound clarity
· Omnidirectional sound pickupUniform response to sound sources in all directions
· Bottom opening designAdapt to various structural layouts
· Low power operationTypical working current is only 125μ A
· Wide voltage operation：2.3V~3.6V， Compatible with multiple systems
· Long lifespan and high reliability
· Compliant with RoHS environmental standards
· package form：CAP_LGA2.75× 1.85, suitable for high-density mounting
3、 Pin definition and function
CXAR41330 adopts a three pin LGA package, with a simple structure that is easy to design and mount:
| Pin number | name | Functional Description |
|---|---|---|
| one | VDD | positive power terminal |
| two | OUT | Analog signal output |
| three | GND | power ground |
Attention: This product is an electrostatic sensitive device. It is recommended to take anti-static measures during production and welding to avoid ESD damage.
4、 Electrical characteristics and performance parameters
4.1. Extreme working conditions
| parameter | condition | minimum | maximum | unit |
|---|---|---|---|---|
| power supply voltage | VDD to GND | -0.3 | five | V |
| Operating Temperature | — | -40 | +100 | ℃ |
| Storage temperature | Solder on PCB board | -40 | +105 | ℃ |
Tip: It is not recommended to work for a long time under extreme conditions to avoid affecting the lifespan of the device.
4.2. Typical electrical characteristics (VDD=3V, Ta=25 ℃)
| parameter | symbol | condition | typical value | unit |
|---|---|---|---|---|
| directionality | D(θ) | — | comprehensive | — |
| power supply voltage | Vdd | — | 2.3~3.6 | V |
| operating current | Idd | — | one hundred and twenty-five | μA |
| sensitivity | S | 94dB SPL@1kHz | -38 | dBV |
| signal-to-noise ratio | SNR | A-weighted, 94dB SPL@1kHz | sixty-five | dB(A) |
| Total Harmonic Distortion | THD | 94dB SPL@1kHz | zero point one | % |
| Acoustic overload point | AOP | THD=10% @1kHz | one hundred and twenty-eight | dB SPL |
| Output impedance | ZOUT | @1kHz | two hundred | Ω |
5、 Frequency response and acoustic performance
CXAR41330 has a flat broadband frequency response characteristic, maintaining good linear output in the range of 20Hz~20kHz, ensuring natural restoration and high fidelity acquisition of speech signals. By combining a high signal-to-noise ratio of 65dB with a high acoustic overload point of 128dB, clear audio can be effectively collected even in high noise environments.
6、 Packaging structure and size description
CXAR41330 adopts CAP_LGA2.75× 1.85 package, specific dimensions are as follows:
| project | Instructions | Specification (mm) |
|---|---|---|
| D | total length | two point seven five |
| E | total width | one point eight five |
| A | total thickness | zero point nine zero |
| e | Pad spacing | zero point three five eight |
| A1 | shell thickness | zero point six three |
The packaging structure is compact, the pad layout is reasonable, suitable for reflow soldering process, and easy to achieve efficient mounting on modern SMT production lines.
7、 Typical application scenarios
· Smartphones and tablets
· TWS earphones and smart wearable devices
· Smart Home Voice Assistant
· Car voice recognition system
· Meeting microphone and recording pen
· Industrial noise monitoring equipment
8、 Summary
CXAR41330, as one of JTM-IC's important products in the field of audio capture, has become an ideal choice for various compact audio devices due to its high signal-to-noise ratio, all-round pickup, bottom opening design, and low power consumption characteristics. JTM-IC（jtm-ic.com）Committed to providing customers with high-quality and highly reliable MEMS microphones and audio solutions, helping to promote the development and popularization of intelligent voice technology.
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