ICS-40638

Description

Note: The ICS-40638 is marked as EOL and is not recommended for new designs.

The ICS-40638 is an analog MEMS microphone with very high dynamic range and capable of operation up to 105°C. The ICS‑40638 includes a MEMS microphone element, an impedance converter, and a differential output amplifier.

Other high-performance specifications include 138 dB SPL acoustic overload point, tight ±1 dB sensitivity tolerance and enhanced immunity to both radiated and conducted RF interference.

The ICS-40638 is available in a small 3.50 × 2.65 × 0.98 mm bottom port surface-mount package.

Part #
ICS-40638
Status
Production
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Microphone
Key attribute

High AOP Differential Analog High Temperature Microphone

Target Markets & Applications text

In-Cabin Automotive, Cameras, IoT Devices, Industrial Applications, Security Systems

Features text
  • Differential non-inverting analog output
  • −43 dBV sensitivity (differential)
  • ±1 dB sensitivity tolerance
  • Extended frequency response from 35 Hz to 20 kHz
  • Enhanced RF immunity
  • −81 dB PSRR
  • 50 × 2.65 × 0.98 mm surface-mount package
  • Compatible with Sn/Pb and Pb-free solder processes
  • RoHS/WEEE compliant
Sub Title
High‑AOP Analog MEMS Microphone with Differential Output
Documentation & Resources
DS-000281 – ICS-40638 Datasheet
AN-100 – MEMS Microphone Handling and Assembly Guide
AN-1112 – Microphone Specifications Explained
AN-1140 – Microphone Array Beamforming
AN-1003 – Recommendations for Mounting and Connecting InvenSense MEMS Microphones
AN-000013 – Analog Output MEMS Microphone Flex Evaluation Board User Guide
A/D
Analog
Size (L)
3.50mm
Port location
Bottom
Size (W)
2.65mm
Size (D)
0.98mm
Output type
Differential
Supply Voltage VDD
1.52 – 3.63
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Temperature
-40°C – 105°C
SNR
63.00
AOP
138.00
Sensitivity (1 kHz, 94 dB SPL)
-43 ±1
LF Cutoff
35
Power Modes
High Quality
High quality mode current
170 (Typ) 190 (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 ICS-40638 has a high dynamic range and very high AOP which enables clear audio capture in loud conditions: wind, concerts, close range speaking, etc. It is capable of operation up to 105°C.

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datasheet
DS-000281-ICS-40638-v1.1_0.pdf (381.62 KB)
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ICS-40638
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