Do you know what output modes the voice chip has? Current mode DAC audio output mode, PWM Direct drive audio output mode or class A / b audio power amplifier output mode; Many engineers who design speech chips want to know that the general design of peripheral audio circuits and power amplification circuits is based on the output mode of the chip. What kind of audio power amplifier will indirectly or directly affect the speech chip.

The following small series of nine core electronics will talk to you about the difference between "all digital audio output mode" and conventional three types of audio output mode.

Alternative voice IC Audio output mode: all digital audio output

Voice ICs on the market generally output voice in analog mode, such as current mode DAC output. The advantages of this output mode are low cost and low price. However, it also has great disadvantages. For example, if the horn is driven by adding a triode, the static working point of the triode should be adjusted according to different working voltages, different triodes and different horns. However, adjusting the working point of the triode is generally directly related to the current magnification of the triode. Generally, the current magnification error of triode is more than 100%. In the face of such complex things. As a result, we spent a lot of experience in development to debug a small triode. And in mass production, it is also easy to have different faults, resulting in poor output sound quality.

There are problems, there are solutions!

All digital audio output mode! This audio output mode has the same advantages as current mode DAC and low price. But the output does not need to adjust the static working point of the cumbersome triode. The output sound quality is not affected by the model of triode and horn, and the influence of external components is not accepted. Always in good shape.

Welcome customers interested in this voice IC, please e-mail us for advice.