Hi ST. I have a few questions regarding the application of the TDA7498 and TDA7498E.
The TDA7498E application circuit has schottky diodes on the output but the TDA7498 does not, is there a reason for this?
The loudspeaker design I am wanting to drive has high inductance due to both the voice coil and crossover network with a combined inductance of approximately 4mH. Can you assist in calculating the correct values for C and R for the snubber circuit. I am basing my low pass filter on the 6 ohm filter values (due to speaker impedance dips). The data brief says 330pF and 22R as a starting point, I suspect I need to differ from this.
The loudspeaker system is an 8 ohm system but has a minimum impedance of 4.9 ohms. Is it better for me to change my PCB to use the TDA7498E instead of the TDA7498 and from a reliability point of view which IC is better.
The design is intended to be as reliable as practically possible starting with a 0.4K/W heatsink to keep the package running cold.