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
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
