AUD-ESP-00459 IA611 SmartMic Always-On Voice Wake Audio Processor The IA611 SmartMic is an always-on Audio Processor featuring Voice Wake and Voice ID keyword detector, 1 TM a two-second buffer , and Knowles proven high performance acoustic SiSonic MEMS microphone technology in a single, miniature, top-port package. The IA611 offers flexibility by supporting the most relevant audio and data interfaces. Its integrated programmable DSP with 248 kBytes of RAM is available for customer rd and 3 party algorithms, enabling unlimited creativity. The solution pushes the system performance to ultra-low power with its custom core design, and accelerates time to market with its highly integrated combination of hardware, software, and firmware. Product Features High-accuracy Voice Wake and Voice ID Integrated power tree from a single 1.8 V supply keyword recognition to wake-up any system 2 Extra flexibility with I C/UART interfaces from a trigger phrase 248 kB RAM, 160 MFLOPS, 43 MHz, 32-bit complex- Minimum latency when burst out two-second valued floating-point ALU, low-power open developer audio buffer using SPI platform with SDK Ultra-low-power always on Acoustic Activity High-Performance Acoustic SiSonic MEMS with Detector (AAD) capable waking the embedded 1 dB matched sensitivity, 65.5 dB SNR and DSP 132.5 dB SPL AOP Interrupt signal to the host processor when a Packaged in SPK 4.00 x 3.00 x 1.30 mm voice keyword trigger is detected Typical Applications Smartphones Headsets and true wireless earbuds Wearables Remote controls Tablets Connected home devices 1 Buffer size varies based on use-case and algorithm used. knowles.com AUD-ESP-00459, Rev 1.1 1 2019 Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic, Knowles are the trademarks of Knowles Electronics, LLC Knowles Con dential ben.venator mouser.com 11:27:26 2021-02-10 IA611 Datasheet Specification Summary Absolute Maximum Ratings Parameter Absolute Maximum Ratings Units VDD to Ground -0.3, +2.5 V Digital Input to Ground -0.3, VDD+0.3 V Input Current (any pin) 5 mA Temperature -40 to +100 C Stresses exceeding these Absolute Maximum Ratings can cause permanent damage to the device. These are stress ratings only. Functional operation at these or any other conditions beyond those indicated under SmartMic Specifications and Electrical Characteristics is not implied. Exposure beyond those indicated under SmartMic Specifications and Electrical Characteristics for extended periods can affect device reliability. SmartMic Specifications o Test Conditions: VDD = 1.8V, No Load, at T =25 C, 5520% R.H., PDM+SPI mode, 3.072 MHz clock, unless otherwise specified. A Parameter Symbol Conditions Min Typ Max Units Supply Voltage VDD 1.71 1.8 1.98 V Deep-Sleep Mode - 0.32 - Voice Wake AAD Mode (stage 0) - 0.40 - 2 Voice Wake Keyword Detect Mode (stage 1) - 1.1 - 1 Supply Current IDD mA Voice Wake Burst Mode (stage 2) - 7.5 - Hardware Pass-Through Mode - 1.74 - Hardware Pass-Through Mode (768 kHz Clock) - 0.74 - 200 mVpp sinewave 1 kHz - 87 - Power Supply Rejection PSRR dBV/FS Ratio 200 mVpp sinewave 1 kHz (768 kHz Clock) - 71 - 200 mVpp 7/8 duty cycle rectangular waveform - -96 - 217 Hz, A-weighted Power Supply Rejection PSR+N dBFS(A) 200 mVpp 7/8 duty cycle rectangular waveform - -80 - 217 Hz, A-weighted (768 kHz PDM clock) 94 dB SPL 1 kHz -38 -37 -36 1 Sensitivity S dBFS 94 dB SPL 1 kHz (768 kHz PDM clock) -22 -21 -20 DC Output Fullscale = 100 - 0 - % FS 94 dB SPL 1 kHz, - 66 - A-weighted Signal-to-Noise Ratio SNR dB(A) 94 dB SPL 1 kHz, - 64.5 - A-weighted (768 kHz PDM clock) Total Harmonic Distortion THD 94 dB SPL 1 kHz, S = Typ - 0.2 0.5 % 1% THD 1 kHz, S = Typ - 115 - Acoustic Overload Point AOP dB SPL 10% THD 1 kHz, S = Typ - 132.5 - Bandwidth BW -3dB relative to 1 kHz - 50 - kHz -3dB relative to 1 kHz - 41 - Low-Frequency Roll-Off LFRO Hz -3dB relative to 1 kHz (768 kHz PDM clock) - 95 - Directivity Omnidirectional Polarity Increasing sound pressure Increasing density of 1s Functional Operating TA -40 25 85 C Temperature 1 100% tested. 2. This is reference power consumption while running the Knowles VoiceQ engine. The power consumption may change based on the voice-detect engine. knowles.com AUD-ESP-00459, Rev 1.1 2 2019 Knowles Electronics, LLC, Itasca, IL, USA, All Rights Reserved. SiSonic, Knowles are the trademarks of Knowles Electronics, LLC Knowles Con dential ben.venator mouser.com 11:27:26 2021-02-10