Cirrus Logic, Inc. High Performance Digital Microphone CS7250B


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High Performance Digital Microphone - CS7250B - Cirrus Logic, Inc.
Austin, TX, USA
High Performance Digital Microphone CS7250B
The CS7250B is a low-profile digital microphone optimized for use in both high performance audio systems, as well as low power audio applications, including those with “always-on” voice control. The device incorporates Cirrus Logic’s proprietary CMOS/MEMS membrane technology, offering high reliability and excellent audio quality in a miniature, low-profile package. The CS7250B supports two operational modes selected according to the applied clock frequency. High performance mode offers low noise, wide dynamic range and class-leading THD even with very loud audio. Low power mode offers ultra low current consumption while maintaining excellent SNR. The CS7250B offers tight tolerance on the microphone sensitivity, giving reduced variation between parts and removing the need for in-line production calibration of part-to-part microphone variations. Features High SNR (66 dB) High AOP (131 dB SPL) Excellent THD (1% at 125 dB SPL) 35 Hz low frequency rolloff Low current consumption 5µA (Sleep) 160 µA (low power mode) 650 µA (high performance mode) PDM digital audio output Proprietary ADC technology Reduced clock-jitter sensitivity Low noise floor Stable in overload condition Bottom Port LGA Package
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Technical Specifications

  Cirrus Logic, Inc.
Product Category Audio Microphones
Product Number CS7250B
Product Name High Performance Digital Microphone
Directivity Omnidirectional
Operating Temperature -49 to 185 F (-45 to 85 C)
Sensitivity -36 mV/Pa (-248207 mV/psi)
SN Ratio 62 to 66 dB
Voltage 1.6 to 2.0 volts
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