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ICS-40720
ICS-40720
| Part Number | ICS-40720 |
|---|---|
| Manufacturer | TDK InvenSense |
| Category | Sensors, Transducers > Microphones (MEMS Microphones) |
| Description | Ultra-high SNR, low-noise differential analog output bottom-port MEMS microphone featuring a 70 dB SNR rating, enhanced acoustic overload point (AOP), and tight sensitivity tolerances for premium voice capture and ANC systems. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The ICS-40720 is a high-performance bottom-port MEMS microphone with differential analog output from TDK InvenSense. Optimized for voice capture and ANC, it delivers an industry-leading 70 dB SNR. Its integrated MEMS sensor and low-noise preamp adopt balanced differential signaling to suppress EMI and common-mode noise for clean audio over long PCB traces. With flat 75 Hz–20 kHz frequency response and a 124 dB SPL AOP for distortion-free loud-scene recording, this compact reflowable LGA microphone is ideal for smart speakers, smartphones and wearables.
Core Advantages
Ultra-High 70 dB Signal-to-Noise Ratio
Provides an industry-leading clean audio floor, allowing far-field voice recognition systems and smart home assistants to accurately isolate clear vocal commands from a distance.
Fully Differential Analog Output
Utilizes a dual-line balanced analog signal configuration that effectively eliminates RF buzz, power supply ripple noise, and adjacent layout trace electromagnetic interference.
High Acoustic Overload Point (AOP)
Sustains clean, unclipped acoustic translation up to 124 dB SPL, enabling stable performance inside loud concert venues, windy outdoor locations, or close-range speaker proximity positions.
Tight Production Sensitivity Matching
Manufactured with strict sensitivity tolerances matching ±2 dB across batches, significantly simplifying configuration requirements for multi-microphone beamforming arrays and directional ANC steering algorithms.
Key Specifications
| Brand | TDK InvenSense |
|---|---|
| RoHS Status | RoHS3 Compliant / Lead-Free Standard / Halogen-Free |
| EDA/CAD Model | 3D Model & PCB Footprint Available upon request |
| Warranty | 1-Year Standard Factory Warranty |
| Package / Case | LGA-4 (4.00×3.00×1.20mm) |
| Mounting Type | Surface Mount Technology (SMD/SMT) |
| Surface Marking / Silkscreen | 720 Marking |
| Port Location | Bottom-Port Acoustic Entry Configuration |
| Signal-to-Noise Ratio (SNR) | 70 dBA (Typical) |
| Acoustic Overload Point (AOP) | 124 dB SPL (Typical at 10% Total Harmonic Distortion) |
| Nominal Sensitivity | -38 dBV/Pa ±2 dB (Measured at 1 kHz, 94 dB SPL) |
| Output Interface Configuration | Analog Differential Output (Balanced Output Path) |
| Frequency Response Range | Wideband Flat Response extending from 75 Hz to 20 kHz |
| Operating Supply Voltage ($V_{DD}$) | 1.52V to 3.63V DC Multi-Rail Compatibility Range |
| Supply Operating Current | Typically 285 µA |
| Operating Temperature Range | -40°C to +85°C (Industrial System Reliability Grade Envelope) |
Typical Applications
- Premium Active Noise Cancellation (ANC) Wireless Earbuds, Over-Ear Headphones, and Gaming Headsets
- Smart Home Speakers, Voice-Activated Appliances, and Intelligent Far-Field Voice Assistants
- High-Fidelity Smartphones, Tablets, Portable Video Cameras, and Field Audio Recording Gear
- Multi-Microphone Beamforming Arrays, Teleconferencing Hubs, and Directional Sound Bars
- Wearable IoT Devices, Wearable Safety Equipment, and Smart Security Monitoring Intercoms
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your currently available inventory of the ICS-40720 microphone fully original?
A: Yes, we guarantee that all ICS-40720 MEMS microphones in our warehouse inventory are 100% brand-new, factory-original products from TDK InvenSense, carefully kept and shipped under strict anti-static ESD shielding and moisture-sealed packaging parameters.
Q2: Why is a bottom-port configuration beneficial for MEMS microphone designs?
A: A bottom-port layout places the acoustic entry hole on the bottom surface of the LGA package, directly over a small hole drilled through the product’s PCB. This architecture allows the main microphone body to shield itself from external dust and moisture, while maximizing inner acoustic chamber space to achieve higher SNR and sensitivity metrics.
Q3: What unique design benefits does the differential analog output format provide over standard single-ended lines?
A: The differential layout outputs two balanced, opposite-phase signals. When a downstream codec or differential amplifier processes these lines, it naturally cancels out common-mode layout noise, system power ripples, and high-frequency RF trace buzz, preserving extreme acoustic fidelity.
Q4: How can our design team request precise reflow soldering profiles, vacuum pick-and-place recommendations, or bulk volume discount quotes?
A: Please complete our Quick Inquiry web form on this page with details about your processing parameters. Our application support desk will process your inquiry and dispatch the available technical documentation package within 24 hours.
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