Audio analyser family gets high-bandwidth option
Audio Precision
Audio analysers
Audio Precision has launched an ultra-high-bandwidth analyser option for the APx525 family of audio analysers.
The BW52 high-bandwidth option extends the APx's FFT (Fast Fourier Transform) capability to 1MHz, with 24-bit amplitude resolution and 2Hz frequency resolution, making APx ideal for looking at out-of-band noise in Class-D amplifiers, sigma-delta converters and other modern audio devices.
By comparison, other audio analysers have a maximum FFT bandwidth of 250kHz or less, making them unsuitable for looking at switching frequencies that often centre around 300-500kHz.
Radio frequency (RF) spectrum analysers can have much wider bandwidth, but their low impedance, low resolution and low tolerance to high input levels again make them unsuitable for audio design.
The BW52 is supported by the following models of APx: APx520, 521, 525 and 526.
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