一种高性能USB声卡的设计与制作

Design and making of a high performance USB sound card

设计并制作了一款USB声卡。该声卡采用PCM2706C芯片将数字音频信号转换为I2S信号,传入音频DAC芯片CS4398进行数模转换,再将输出的差分音频信号送入音频运放OPA1612进行放大驱动耳机发出声音。通过实物调试,该声卡具有高保真、音量可调、外观美丽、功耗低等特点,具有较高的实用价值。

A USB sotmd card was designed and made. It uses the PCM2706C chip to convert the digital audio signal into the 12S signal which is sent to audio DAC chip CS4398 for digital analog and then send the outputted differential audio signal to audio operation OPA1602 circuit for amplification drive headphones. The results shows that the sound card has the characteristics of high fidelity, ad- justable volume, beautiful appearance and low power consumption, which has higher practical value.