Headsets/headphones & earbuds

Products and reference designs

Headsets/headphones & earbuds

Block diagram

Overview

Our integrated circuits and reference designs help you create Bluetooth® headset/headphone and earbud designs, including true wireless systems (TWS) and smart headphones/hearables. Create next-generation devices that deliver premium audio with noise cancellation, ultra-low standby power and biosensing capabilities that allow you to monitor heart rate and temperature.

Design requirements

Headsets/headphones and earbud systems often require:

  • Compact battery management with ultra-low standby for longer battery runtime.
  • Ultra-small power components with small bill of material (BOM) size, high efficiency and low standby power.
  • Biosensing to monitor heart rate and temperature during normal use or physical activity.

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Hearables

Charging case Charging case Input power protection Input power protection USB current limit switch USB current limit switch Charging case energy storage Charging case energy storage Battery gauge Batterygauge Battery charger Batterycharger Temp sensor Temp sensor Battery protector Battery protector Charging case digital processing Charging case digital processing MCU MCU Level shifter Level shifter Analog switch Analog switch Wired interface Wired interface USB hub USB hub Charging case ESD protection Charging case ESD protection ESD protection ESD protection Earbuds ESD protection Earbuds ESD protection ESD protection ESD protection Case sensing Case sensing Hall sensor Hall sensor Current sensor Current sensor Hearables Hearables Earbuds energy storage Earbuds energy storage Temp sensor Temp sensor Battery charger Batterycharger Earbuds sensing Earbuds sensing Accelerometer Accelerometer Ambient light sensor Ambient light sensor Biosensing AFE Biosensing AFE Wireless interface Wireless interface Bluetooth Bluetooth Audio interface Audio interface Audio codec Audio codec Earbuds digital processing Earbuds digital processing Audio processor Audio processor Level shifter Level shifter Analog switch Analog switch Earbuds DC/DC power supply Earbuds DC/DC power supply LDOs LDOs Buck converter Buck converter Capacitive interface Capacitive interface Capacitive touch MCU Capacitive touch MCU Charging case DC/DC power supply Charging case DC/DC power supply LDOs LDOs Buck converter Buck converter Boost converter Boost converter Load switch Load switch

Technical documentation

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Type Title Date
Application note Space Optimized, “Clam Shell” Layout for Step-Down DC/DC Converters 31 Oct 2016
Technical article Smart Wi-Fi® locks will soon open many doors PDF | HTML 21 Aug 2023
White paper Enabling modern retail and logistics automation 09 Jun 2021
Application note Improved Fast Charge Using the bq25120 Adjustible VBATREG, Charge Current, TS, 08 Aug 2016
Analog Design Journal Battery-charging considerations for low-power applications 02 May 2016

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