GENERAL DESCRIPTION
AKD4555-E is an evaluation board for the portable digital audio 16bit A/D and D/A converter, AK4555. The AKD4555-E can evaluate A/D converter and D/A converter separately in addition to loopback mode (A/D → D/A). The A/D section can be evaluated by interfacing with AKM’s DAC evaluation boards directly. The AKD4555-E has the interface with AKM’s ADC evaluation boards. Therefore, it’s easy to evaluate the D/A section. The AKD4555-E also has the digital audio interface and can achieve the interface with digital audio systems via opt-connector.

FUNCTION
• Compatible with 2 types of interface
   - Direct interface with AKM’s A/D & D/A converter evaluation boards
   - DIT/DIR with optical input/output