Audio DSP Systems | BELASIGNA R281

始终侦听，语音触发音频 DSP 系统

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概览

BelaSigna® R281 是一款超低功耗语音触发方案，适用于多种消费型电子器件。在典型应用中，BelaSigna R281 处于“始终侦听”状态，检测一个经过用户训练的触发词组，检测到该触发词组时则发出一个唤醒信号。“始终开启”关键词检测，小于 300 uW（不包括麦克风的功耗）的平均功耗节省了电池待机使用寿命。BelaSigna R281 是一款超微型方案，采用 5 mm x 5mm QFN32 封装和 2.42 mm x 2.74 mm WLCSP 封装。它可使用 4 mil 布线和最少的外部组件设计到单层 PCB 上。需要一个外部的 I2C 宿主控制器来配置该器件才能运行。

  • "Always Listening" Hands-Free Voice Trigger

  • Smartphones
  • Tablets
  • Wearables
  • Smart Watches
  • Portable Electronic Devices
  • Personal Communication Devices
  • Any device with an extremely low-power sleep mode which could benefit from "always listening" voice trigger technology

  • Ultra-Low-Power
  • Superior Performance
  • Mixed-Signal
  • Easy Design-In

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Case Outline

MSL Type

MSL Temp (°C)

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Container Qty.

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DSP Core (bits)

Coprocessor Type

MIPS

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RAM (kB)

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Reference Price

BR281Q32A101V1G

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Obsolete

CAD Model

Pb

A

H

P

QFN-32

488AM

3

260

REEL

5000

N

16

WOLA

60

-

-

160

1

0

Price N/A

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BR281W31A101V1G

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CAD Model

Pb

A

H

P

WLCSP-31

567NB

1

260

REEL

2500

N

16

WOLA

60

-

-

170

1

0

Price N/A

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可靠性数据

Die Related Summary Data

Device: BR281W31A101V1G

Equivalent to wafer fab process: ONC18

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

ONC18

2

6465777234

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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