R281_16 Datasheet, PDF (1/13 Pages) ON Semiconductor – Always-Listening, Voice Trigger Solution

BelaSigna R281
Always-Listening, Voice
Trigger Solution
Introduction
BelaSigna^® R281 is an ultra−low−power voice trigger solution for a
wide range of consumer electronic devices. In a typical application
BelaSigna R281 is “always listening” and will detect a single,
user−trained trigger phrase, asserting a wake−up signal when this
trigger phrase is detected.
“Always−listening” key phrase detection with an average power
consumption of less than 300 mW (not including the power
consumption of the microphone) preserves Standby battery life.
BelaSigna R281 is an ultra−miniature solution that is available in
both a 5 mm x 5 mm QFN32 package (488AM) and a 2.45 mm x
2.77 mm WLCSP package (567NB). It can be designed onto a single
layer PCB with 5 mil routing and with a minimal amount of external
components.
An external, I²C host controller is required to configure the device
for operation.
Key Features
Proven Ultra−Low−Power Digital Signal Processing
(DSP) Technology
• Audio DSP Technology Originally Developed for Hearing Aids
Offers the Required Computational Power at Extremely Low Current
Consumption
• < 300 mW Average Current Consumption (not including microphone)
Mixed−Signal System−on−Chip (SoC)
• Audio−grade, Analog Input with Onboard Pre−amplifier
• Built−in, Regulated Voltages Including Onboard Microphone Bias for
Power Efficient Operation
• Supports Analog or Digital Microphone Input
Interfaces and Peripherals
• I²C−based Device Configuration and Control
• GPIO Wake Signal
• Internal Oscillator
www.onsemi.com
1 32
QFN32
CASE 488AM
MARKING
DIAGRAM
1
0W689−
001
AWLYYWW
G
WLCSP31
CASE 567NB
0W703−
001
AWLYYWW
G
0W689−001 = Specific Device Code
A
= Assembly Location
WL = Wafer Lot
YY
= Year
WW = Work Week
G
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Applications
• Mobile Phones
• Tablets
• Portable Electronic Devices
• Wearables
• Toys
© Semiconductor Components Industries, LLC, 2016
1
September, 2016 − Rev. 1
Publication Order Number:
R281/D