Hi Champs,
Customer measured THD+N, and monitored with less head room on PVDD, THD+N gets worse.
Measurement condition is below.
- input signal differential amplitude : 300mV(typ), 700mV(max)
- Gain = 20dB(10V/V)
- Load = 8 ohm, suggested LC filter is implemented.
- PVDD : 8V, 14V
PVDD=8V results are much worse than PVDD=14V.
Could you provide the mechanism why lower headroom on PVDD leads to worse THD+N from TAS5411's architecture point of view?
Best regards,
