TAS2555具有 H 类升压和扬声器感应功能的 5.7W D 类单声道音频放大器 (Rev. A)
ZHCSFY2A – August2015 – revisedNovember 2016
8 Parameter Measurement Information
All typical characteristics for the devices are measured using the Bench EVM and an Audio Precision SYS-2722 Audio Analyzer. A PSIA interface is used to allow the I2S interface to be driven directly into the SYS-2722. SPEAKER OUT terminal is connected to Audio precision Analyzer inputs as shown below. There is a differential to single ended (D2S) filter, with a 1st order Passive pole at 120 kHz added. This is to ensure high performance class-D amplifier sees a fully differential matched loading at its outputs and no degradation in performance measured due to loading effects of AUX filter on class-D outputs.
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