Hi,
Our customer asks us how to reduce POP noise at transition between PLAY and Hi-Z.
The output waveform of TAS5825M that I observed is shown below.
PVDD=24V,
Process Flow: FIR 48k 2.0 (All filters pass thru)
RL: 6-ohm loudspeaker
Yellow: OUT2-
Cyan: OUT2+
Red: (OUT2-)-(OUT2+)
1. Hi-Z to PLAY
Used script on I2C monitor is as below.
w 98 00 00
w 98 7f 00
w 98 03 03
POP noise was audible.
2. PLAY to Hi-Z
Used script on I2C monitor is as below.
w 98 00 00
w 98 7f 00
w 98 03 02
POP noise was audible even at this time.
Best regards,
Akio Ito