Datasheet Asahi Kasei Microdevices AK5706 — 数据表

[AK5706] AK5706
Low-Power 2-ch ADC with AAA and Audio Buffer
1. General Description
The AK5706 is a high-performance 24-bit stereo ADC (Analog-to-Digital converter) with integrated
Acoustic Activity Analyzer (AAA), audio buffer, and support for digital and high-SNR microphones. The
AAA listens for audio activity in a very low-power state while the rest of the device remains powered off.
Once qualifying audio content is detected, the audio buffer begins recording and the rest of the AK5706
wakes up, in turn waking other devices in the system as needed. Designed for systems that must listen
for specific Typ.es of audio activity while consuming very low power, the AK5706 is ideal for products
such as speech recognition systems, security cameras, and smart doorbells. 1.
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11. 12. 2. Features
Acoustic Activity Analyzer (AAA)
• High Accuracy Mode (Idd = 30 µA) / External Trigger Mode (Idd = 11 µA)
Audio Buffer: 64 kB for up to 2 sec of recording
Audio Capture
• 2-Channel Low-Power 24-bit ADC …