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TLV320AIC3101 输入S/N测试方法

  你好!

  根据规格书中的参数,用AP可以测试SNR参数吗?测试方法是怎么样的?AC输入短路到GND如何实现的?

Electrical Characteristics(continued)At 25°C, AVDD_DAC=DR VDD=IOV DD=3.3V, DVD D=1.8V, fs=48kHz, 16-bit audio data(unless otherwise noted)

PARAMETER

TEST CONDITIONS

MINTYPMAX

UNIT

INPUT SIGNAL LEVEL, DIFFERENTIAL

 

SNR Signal-to-noise ratio

A-weighted, fs=48ksps, 0dBPG Again, inputs ac-shorted to ground

92

dB

THDTotal harmonic dist orion

fs=48kHz, 0-dB PG Again, 1-kHz, -2-dB ful-scale input signal

-94

dB

以上的问题是验证刚做的PCB能否达到设计要求。