ZHCSFY3B November 2016 – February 2019 TAS2559
PRODUCTION DATA.
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 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 while seeing no measurable degradation in performance due to loading effects of AUX filter on Class-D outputs.