RCHV1r8J1

USB sound card device

Overview

The GD108B is a USB stereo audio single-chip designed specifically for USB headset devices.
It features a crystal-free design, eliminating the need for an external crystal oscillator and saving on BOM costs. Its SOP16 package simplifies PCB design.
It includes a dual-channel high-resolution DAC and a mono ADC, along with a built-in microphone booster.
Driver-free, plug-and-play, and compatible with Windows, Android, and Linux.

GPD8106B Specification Sheet.pdf

PDF_USB sound card device.zip

Altium_USB sound card device.zip

PADS_USB sound card device.zip

BOM_USB sound card device.xlsx

92047

air001 main controller LED/PWM capture

Capture the PWM signal from the LED or pin and output the frequency and duty cycle information using a digital tube.

It can detect the on/off state of LEDs or changes in the voltage level of pins, calculate the event frequency and duty cycle, and display the results on a digital tube.

In projects where refresh rate information is needed, such as during screen refresh in a loop, but relying on UART to transmit frame rate information has a significant impact in scenarios with high speed requirements, the onboard LEDs or pins can have their voltage levels changed slightly during each loop, and the refresh rate can then be observed through this device. (Oscilloscopes or logic analyzers are optional.)

pwm_snipper.zip

PDF_air001 main controller LED-PWM capturer.zip

Altium_air001 main controller LED_PWM capturer.zip

PADS_air001 main controller LED_PWM capturer.zip

LED PWM Capturer for BOM_air001 Main Controller.xlsx

92051

electronic

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2026-03-27 02:27:41

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