Hi,
First of all I'd like to wish you all a happy new year! To start the new year properly I want to build a good DAC.
I want to use the AK4493 DAC. The reference voltage source I have found to be quite high spec'd is the LTC6655 from Linear technology. The problem I have come across is that the AK4493 requires a really high value capacitor (470uF minimum, value dependant on quality of power supply). The LTC6655(5V version) should not be used with capacitive loads larger than 100uF. At 100uF there already is a noise peak, the ideal capacitor should be around 10uF.
My question now is, how do I optimize the VREF capacitor? Should I just go for the 10uF and put the LTC6655 as close as possible?
Thanks in advance!
- Hidde
First of all I'd like to wish you all a happy new year! To start the new year properly I want to build a good DAC.
I want to use the AK4493 DAC. The reference voltage source I have found to be quite high spec'd is the LTC6655 from Linear technology. The problem I have come across is that the AK4493 requires a really high value capacitor (470uF minimum, value dependant on quality of power supply). The LTC6655(5V version) should not be used with capacitive loads larger than 100uF. At 100uF there already is a noise peak, the ideal capacitor should be around 10uF.
My question now is, how do I optimize the VREF capacitor? Should I just go for the 10uF and put the LTC6655 as close as possible?
Thanks in advance!
- Hidde