Perreaux SILHOUETTE SXD2 User Manual

Page 18

High

Resolution

Formats

Accepting PCM digital streams up to 192kHz and 24-bit, via the
coaxial SPDIF input, allows the SXD2 to be compatible with
high-resolution formats such as DVD-A.

PCB Layout Special attention has been paid to the PCB layout to ensure

maximum isolation between the analog and digital stages.
Ground planes and earth returns have been meticulously
designed to provide optimal current paths, so as not to interfere
with the delicate analog section. Careful layout of the analog
output guarantees that crosstalk is kept to an absolute minimum.

Localised

Supply

Filtering

All integrated circuits (ICs), both analog and digital, have
localised inductor-based supply filtering. Even though voltage
regulators are used for all supply rails, they can be susceptible to
picking up noise on their way to the ICs, especially with high
frequency clocking and data lines present. By filtering locally,
we are making absolutely certain that every last ounce of noise is
removed from the supply rails.

Localised filtering, along with meticulous PCB layout, paves the
way for the SXD2 to utilise the higher signal-to-noise ratio
(SNR) performance offered by 24-bit resolution.

Balanced I-V

Conversion

Balanced current to voltage conversion is utilised in the audio
output stage. This ensures that any common-mode noise and
artefacts are removed before amplification and the analog filter.