Design Highlights; Digital / Analogue Isolation; Oven-Controlled Crystal Oscillator - Ocxo; Adaptive Fifo Buffer Reclocking - DENAFRIPS TERMINATOR-PLUS Owner's Manual

3. DESIGN HIGHLIGHTS

3.1 DIGITAL / ANALOGUE ISOLATION

The TERMINATOR-PLUS Digital Processing Board and R-2R ladder network arrays are
completely isolated. The two boards are physically linked by the OCXO module. The physical
isolation yields even lowered noise-floor and achieved higher signal to noise ratio.
3.2 OVEN-CONTROLLED CRYSTAL OSCILLATOR – OCXO
"The best clocks are the clocks inside the DAC".
The TERMINATOR-PLUS is equipped with dual OCXO operating at audio frequencies
45.1584Mhz, 49.152Mhz. Encapsulated in a metal casing, located at the centre of the DAC,
these OCXO are specially designed for high-end audio applications with ultra-low phase-
noise and ultra-accuracy. The dual OCXO are powered by the complete redesigned power
supply circuitry (encapsulated, shielded, underneath the main boards), supplying constant
current to the OCXO. The adequate power reserves ensure the linearity and stability of the
OCXO.

3.3 ADAPTIVE FIFO BUFFER RECLOCKING

The DENAFRIPS approach to address the jitters issue by FIFO BUFFER RECLOCKING. The
adaptive FIFO buffer store the source digital audio data in the memory. These data are read
from the memory using the ultra-low phase noise, ultra-accuracy OCXO, located right in the
DAC.
This technology is close to the perfection, especially so with the local OCXO. The jitter is so
small that it can be neglected.

3.4 I2S INPUT

TERMINATOR-PLUS comes with three (3) types of I2S input. Despite the I2S input has no
industrial standard, it is probably the best digital input interface to-date. NOTE: DENAFRIPS
cannot guarantee the compatibility with other I2S devices.
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