DA7218-EVAL

The DA7218-EVAL from Dialog Semiconductor is an evaluation board designed to allow measurement and evaluation of the DA7218 device. The DA7218 is an ultra low power stereo codec with single ended headphone driver. The board connects to the digital IO board for USB control and for digital audio input/output via the digital audio interface. All analogue audio codec functionalities are contained within the DA7218 evaluation board (EVB). The EVB is supplied with a USB memory stick containing various documents and a GUI to allow the user to control the DA7218. The GUI is called SmartCanvas. It uses a simple graphical interface allowing the DA7218 to be controlled via a USB port of a PC. This board has a number of jumper links to enable the user to change the system configuration and to allow them to make appropriate measurements, although, in reality, few jumper links are required to be altered for standard operations of the device.

• High performance stereo DAC to headphone playback path with 110 dB dynamic range
• 4 mW stereo playback power consumption
• DAC digital filters with audio and voice mode options, five-band equalizer and five programmable biquad stages
• Dedicated low-latency digital sideband filter with three programmable biquad stages
• High performance microphone to ADC record path with a 105 dB dynamic range
• 2.5 mW stereo record power consumption
• ADC digital filters with audio and voice mode options
• 500 µW always-on record mode with automatic level detection
• Hybrid analog / digital automatic level control to dynamically control the record level
• Shutdown mode offering current consumption during standby of 2.5 µA
• Two low-noise microphone bias regulators with programmable output voltage and ultralow power mode
• Ability to differentiate between stereo and mono headsets
• Automatic detection of headset removal an