TAS2770 15-W Digital Input Mono Class-D Audio Amplifier with Speaker I/V Sense
SLASEM6 – October2017
ADVANCE INFORMATION for pre-production products; subject to change without notice.
7 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 output terminals are connected to the Audio-Precision analyzer analog inputs through a differential-to-single ended(D2S) filter as shown below. The D2S filter contains a 1st order Passive pole at 120 kHz. The D2S filter ensures the TAS2770 high performance class-D amplifier sees a fully differential matched loading at its outputs. This prevents measurement errors due to loading effects of AUX-0025 filter on the class-D outputs.
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