ICS-40730

Description

Note: The ICS-40730 is marked as EOL and is not recommended for new designs.

The ICS-40730 is an ultra-low noise, differential analog output, bottom-ported MEMS microphone. The ICS-40730 includes a MEMS microphone element, an impedance converter, a differential output amplifier and an enhanced RF package. The ICS-40730’s 74 dB SNR and ±2 dB sensitivity tolerance make it an excellent choice for microphone arrays and far field voice control applications.

The ICS-40730 has a linear response up to 124 dB SPL with a differential output sensitivity specification of −32 dBV. It can be used in a single-ended mode with −38 dBV sensitivity and the same high SNR.

The ICS-40730 is available in a 4.72 × 3.76 × 3.50 mm surface-mount package.

Part #
ICS-40730
Status
Production
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Microphone
Key attribute

Ultra High SNR Differential Analog Microphone

Target Markets & Applications text

Conferencing Systems, Headphones with ANC, Microphone Arrays, Smart TVs, Digital Cameras

Features text
  • Ultra-High 74 dBA SNR
  • −32 dBV Differential Sensitivity, −38 dBV Single-Ended Sensitivity
  • ±2 dB Sensitivity Tolerance
  • 4.72 × 3.76 × 3.5 mm Surface-Mount Package
  • Non-Inverted Signal Output
  • Extended Frequency Response from 25 Hz to 20 kHz
  • Enhanced RF Performance
  • 285 µA Current Consumption
  • 124 dB SPL Acoustic Overload Point
  • −77 dBV PSR
  • Compatible with Sn/Pb and Pb-Free Solder Processes
  • RoHS/WEEE Compliant
Sub Title
Ultra Low-Noise Microphone with Differential Output
Documentation & Resources
DS-000139 – ICS-40730 Datasheet
AN-100 – MEMS Microphone Handling and Assembly Guide
AN-1112 – Microphone Specifications Explained
AN-1124 – Recommendations for Sealing InvenSense Bottom-Port MEMS Microphones from Dust and Liquid Ingress
AN-1140 – Microphone Array Beamforming
AN-1003 – Recommendations for Mounting and Connecting InvenSense MEMS Microphones
AN-1165 – Op Amps for MEMS Microphone Preamp Circuits
AN‐000012 – Differential Analog Output MEMS Microphone Flex Evaluation Board User Guide
Low Self Noise: The First Step to High-Performance MEMS Microphone Applications
Analog and Digital MEMS Microphone Design Considerations
Understanding Microphone Sensitivity
A/D
Analog
Size (L)
4.72mm
Port location
Bottom
Size (W)
3.76mm
Size (D)
3.50mm
Output type
Differential
Supply Voltage VDD
1.5 – 3.63
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Temperature
-40°C – 85°C
SNR
74.00
AOP
123.00
Sensitivity (1 kHz, 94 dB SPL)
-32 ±2
LF Cutoff
20
Power Modes
High Quality
High quality mode current
285 (Typ) 350 (Max)
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Wearables
Hearables
Smart Glasses & AR/VR
Gaming
Mobile Devices & Computers
Smart Home & Building
Industrial
Automotive & Mobility
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Features and benefits text

The ultra-low noise ICS-40730 with its 74 dB SNR and ±2 dB sensitivity tolerance make it an excellent choice for microphone arrays and far field voice control applications. The 20 Hz low frequency roll off enables enhanced low frequency ANC.

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datasheet
DS-000139-ICS-40730-v1.1_0.pdf (642.71 KB)
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ICS-40730
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