Multifunctional Telephone Conference System and Video Conference Design Solution Reference

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USB audio headset design reference circuit diagram

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1 Mux/SPDT Audio Switch Evaluation Board EVAL-ADG884EBZ

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[Open Source] PCB Reference Materials Sharing for EDA-TPA3116

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Stereo development solution based on Amazon AVS smart speaker microphone array

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Commonly used circuits in subwoofers

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OpenEarable open source in-ear wireless headphones (finished version)

OpenEarable aims to enable ear-based sensing applications by providing a flexible open source hardware platform. It integrates a range of sensors, including a 9-axis inertial measurement unit, ear canal pressure and temperature sensors, inward-facing ultrasound microphone, speakers, buttons and controllable RGB LEDs. With these capabilities, OpenEarable provides researchers and developers with the ability to explore a variety of application scenarios.

OpenEarable controls and transmits sensor data via BLE (Bluetooth Low Energy). Audio is played from or recorded to the internal SD card. OpenEarable is compatible with the provided dashboard and Edge-ml.

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Teacher ChaN’s headphone amplifier design

Teacher ChaN’s headphone amplifier design

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Voice playback module

The voice playback module supports SPIFLASH to be simulated as a U disk, directly updates the voice in SPIFLASH just like operating a U disk, and directly controls the playback of the voice in FLASH through the serial port.

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5509A recording schematic diagram

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Monitoring, balancing and protection of 10-cell battery pack

TI Designs TIDA-00449 is a ready-to-use and tested hardware platform for monitoring, balancing and protecting power tool 10-cell series battery packs. Power tools increasingly use high power density battery packs based on lithium-ion or lithium iron phosphate cells, which require explosion protection against incorrect charging or discharging. TIDA-00449 also meets the thermal requirements for power tool battery packs when discharged at sustained high currents.

Schematic PCB

Monitoring, balancing and protection of 10-cell battery pack

TI Designs TIDA-00449 is a ready-to-use and tested hardware platform for monitoring, balancing and protecting power tool 10-cell series battery packs. Power tools increasingly use high power density battery packs based on lithium-ion or lithium iron phosphate cells, which require explosion protection against incorrect charging or discharging. TIDA-00449 also meets the thermal requirements for power tool battery packs when discharged at sustained high currents.

Schematic PCB

16-button sensor key reference design using LDC1314 inductor-to-digital converter

The unique inductive sensing capabilities of the LDC1314 are used to implement a contactless 16-key multi-function keyboard. It uses standard PCB technology and simply manufactured components to achieve a low-cost solution.

Schematic PCB

4-Channel Class D Amplifier Reference Design for Car Audio Main Body

The TIDA-00573 reference design provides a Class D-based amplifier solution that can be evaluated in a typical Class AB amplifier form factor. The design is optimized to reduce the heat associated with audio amplifiers and minimize the switching noise associated with Class D amplifiers. This design consists of two parts. Part 1 focuses on the audio amplifier module, while Part 2 focuses on the circuitry required when incorporating it into a base board. This pair of boards allows independent performance testing of this design.

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Voice User Interface Evaluation Kit

Voice user interface evaluation kit

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PD85050S based RF power module for mobile radio applications

PD85050S based RF power module for mobile radio applications

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60 W / 896-941 MHz evaluation board based on 2x PD85050S

60 W/896-941 MHz evaluation board based on 2x PD85050S

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PD85050S based RF power amplifier for mobile radio applications

PD85050S based RF power amplifier for mobile radio applications

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PD85035S-E based 45 W/380-490 MHz RF power module for mobile radio applications

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LET9060S based RF power amplifier for 2-way radios and general wireless services

LET9060S based RF power amplifier for 2-way radios and general wireless services

Schematic PCB