The Audio-GD DI-24 digital interface is based on an Amanero Combo 384 USB module coupled to a pair of Accusilicon 90/98 MHz clock generators.
The circuit is designed to offer multiple options for using the clock generators: interacting with the internal clock generators, using external clock generators (slave mode), or offloading the internal clock generators to a third-party device (master mode). This type of circuit allows it to be integrated into high-tech audio systems.
The Altera FGPA logic circuit is responsible for generating the output signal.
This high-frequency IC is isolated from the USB interface to avoid spurious noise, both in terms of signal conversion and clock accuracy.
Audio-GD DI-24: new features
Built-in 10 MHz clock generator. FPGA reduces jitter and phase noise. The 50Ω and 75Ω clock outputs allow you to work as an external oscillator, supplying a 10 MHz signal to the DAC. The clock outputs can be switched between internal and external clock using the front panel buttons.
Built-in isolator. USB and 10 MHz clock input isolation.
All output circuits are powered by Class A power supplies for best analog signal handling. The USB interface, FPGA and clock are powered by 4 groups of DC power supplies and 5 groups of ultra-fast linear power supplies.