Hello,
We are designing audio circuit using TAS5805M IC.
The goal is to limit output power to the 2x20RMS at PVDD=21V R=8Ohm to not excess maximum current consumption.
Based on calculations the AGAIN should be 1000b (-4dB) and the AGL=0,5dB
Vspeaker_max ≈ PVDD × RL / (RL + 2 × (RDS(on) + ZDC)) = 21x8/(8+2x(0,18+0,19) = 21x8/8,74 = 19,22 V
AGAIN = 20log(19,22/29,5) = -3,72 ~-4dB (1000 bin)
Output peak voltage at 20Wrms PRMS=U2/R U2=Prms*R=160
Urms=12,65 [V] Umax= 12,65*√2 = 17,89V
Total gain at 20W 20log(17,89/29,5) = -4,34
AGL/DRC threshold = -4,34-(-4) = 0,34db ~0,5dB
Could you please support howto Enable and set the AGL threshold over I2C, without PPC3 GUI? Specification is showing default values however does not explain how to set specific ones.
Kind regards,
Michal
