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SA3291A-E1 Datasheet(PDF) 1 Page - ON Semiconductor |
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SA3291A-E1 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 20 page © Semiconductor Components Industries, LLC, 2015 March, 2015 − Rev. 7 1 Publication Order Number: SA3291/D AYRE SA3291 Preconfigured Wireless DSP System for Hearing Aids Description Ayre t SA3291 is a preconfigured wireless DSP system utilizing Near−Field Magnetic Induction (NFMI) technology. Ayre SA3291 enables hearing aids to wirelessly synchronize program modes and volume control and stream telecoil signals from one hearing aid to the other. When coupled with a relay device, Ayre SA3291 enables features such as stereo audio streaming via Bluetooth® in addition to remote control functionality. Featuring iSceneDetect t environmental classification, adaptive noise reduction, superior feedback cancellation, fully automated and adaptive microphone directionality, and up to 8−channel WDRC, Ayre SA3291 is ideal for high−end, full−featured wireless products. Binaural Synchronization − The binaural synchronization feature allows two hearing aids to wirelessly synchronize adjustments such as program modes or volume control. By working together as one system, user control is simplified. Binaural Telecoil − The binaural telecoil wirelessly streams telecoil audio signals from one hearing aid to the other. This enables hearing aid users to hear phone calls in both ears, improving speech intelligibility. Stereo Audio Streaming − Stereo audio signals can be streamed wirelessly from a relay device to hearing aids equipped with Ayre SA3291. A relay device can use Bluetooth or other far−field wireless technology to wirelessly connect with TVs, music players, mobile phones or other audio sources. Acoustic Environment Classification − The iSceneDetect 1.0 environmental classification algorithm is capable of analyzing the hearing aid wearer’s acoustic environment and automatically optimizes the hearing aid to maximize comfort and audibility. iLog ] 4.0 Datalogging − Enables the recording of various hearing aid parameters such as program selection, volume setting and ambient sound levels. The sampling interval can be configured to record from every 4 seconds up to once every 60 minutes. The fitting system can present the data to help the fitting specialist fine tune the hearing aid and counsel the wearer. EVOKE [ Advanced Acoustic Indicators − Allows manufacturers to provide more pleasing, multi−frequency tones simulating musical notes or chords to indicate events such as program or volume changes. Automatic Adaptive Directionality − The automatic Adaptive Directional Microphone (ADM) algorithm automatically reduces the level of sound sources that originate from behind or to the side of the hearing aid wearer without affecting sounds from the front. The algorithm can also gather input from the acoustic environment and automatically select whether directionality is needed or not, translating into additional current savings. Adaptive Feedback Cancellation − Automatically reduces acoustic feedback. It allows for an increase in the stable gain while minimizing artifacts for music and tonal input signals. www.onsemi.com 32 PAD HYBRID CASE TBD PAD CONNECTION MARKING DIAGRAM SA3291A−E1 XXXXXX SA3291A = Specific Device Code E1 = RoHS Compliant Hybrid XXXXXX = Work Order Number (Bottom View) GND VIN1 PGND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 32 27 28 29 30 31 TIN VREG VC GPIO7/ DIGVC L2 NGND L1 NVB VBP DAI VB GPIO0/ MS1 GPIO1/ MS2 PCSDA PCCLK OUT− OUT+ MGND VIN2 See detailed ordering and shipping information on page 17 of this data sheet. ORDERING INFORMATION |
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