Monday, December 26, 2011

Jeff Rowland Aeris dac inside - Part 2

Close - starting to the right of the circuit board

Power from PSU comes here

Fairchild MOSFET's

Linear Technology Regulators

An old USB receiver from TI - TAS1020B

From TI "This product is not recommended for new designs"
Why not use 24/192 Cypress USB receiver instead of the old TAS1020B?

Xilinx Spartan FPGA/DSP, Two gold crystal clocks above the Spartan.

Under Spartan there are three chips.

Left - AD1895:  192 kHZ Asynchronous Sample Rate Converter
Middle - Xilinx Flash for the Spartan FPGA chip
Right - AKM 4113 24/192 S/PDIF receiver

Going to the left of the circuit board
At the top - One AD1853 delta sigma 24/192 dac chip.

Under the dac chip there are two Lundahl LL1588 transformers

LL 1588