TDK InvenSense ICS-40618 High Dynamic Range Microphone
TDK InvenSense ICS‐40618 is an analog MEMS microphone with a very high dynamic range and a low‐power AlwaysOn mode. The ICS‐40618 includes a MEMS microphone element, an impedance converter, and a differential output amplifier. The component has an operating temperature range of -40°C to +85°C. This microphone features a low‐power mode, which is active when the supply voltage is <2.0V. In this mode, the ICS‐40618 operates with 55μA. Other low-power specifications include 129dB SPL acoustic overload point and a tight ±1dB sensitivity tolerance.
High‐performance specifications includes 132dB SPL acoustic overload point, tight ±1dB sensitivity tolerance, and enhanced immunity to both radiated and conducted RF interference. The device operates with 165µA in high-performance mode.
The electro‐acoustic performance of the ICS-40618 matches the top port ICS‐40619, making this pair of microphones suitable to use together in applications requiring both top and bottom port devices. The ICS‐40618 is available in a small 3.50mm x 2.65mm x 0.98mm bottom port surface mount package.
Features
- Differential non‐inverting analog output
- -38dBV sensitivity (differential)
- ±1dB sensitivity tolerance
- Extended frequency response from 50Hz to 20kHz
- Enhanced RF immunity
- -85dB PSRR
- 3.50mm × 2.65mm × 0.98mm surface mount package
- Compatible with Sn/Pb and Pb‐free solder processes
- RoHS/WEEE Compliant
Applications
- Smartphones
- “AlwaysOn” listening
- Wearable devices
- Still and video cameras
- IoT devices
Functional Block Diagram
Publié le: 2017-07-10
| Mis à jour le: 2022-03-10