max98089 Maxim Integrated Products, Inc., max98089 Datasheet - Page 106

• Manufacturer Part Number: max98089
• Description: Low-power, Stereo Audio Codec With Flexsound Technology
• Manufacturer: Maxim Integrated Products, Inc.

Table 25. Power Limiter Registers (continued)
The IC’s distortion limiter ensures that the speaker amplifier’s output does not exceed the programmed THD+N limit.
The distortion limiter analyzes the Class D output duty cycle to determine the percentage of the waveform that is
clipped. If the distortion exceeds the programmed threshold, the output gain is reduced.
REGISTER
0x45
BIT
7
6
5
4
3
2
1
0
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PWRT2
PWRT1
NAME
Power Limiter Time Constant 2
Select a value that matches the thermal time constant of the loudspeaker’s magnet.
Power Limiter Time Constant 1
Select a value that matches the thermal time constant of the loudspeaker’s voice coil.
Low-Power, Stereo Audio Codec
VALUE
VALUE
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
with FlexSound Technology
TIME CONSTANT
TIME CONSTANT
Disabled
Disabled
(min)
0.50
0.67
0.89
1.19
1.58
2.11
2.81
0.50
0.67
0.89
1.19
1.58
2.11
2.81
(s)
DESCRIPTION
VALUE
VALUE
0xC
0xD
0xC
0xD
0xA
0xB
0xE
0xA
0xB
0xE
0xF
0x8
0x9
0xF
0x8
0x9
MAX98089
Distortion Limiter
TIME CONSTANT
TIME CONSTANT
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
(min)
3.75
5.00
6.66
8.88
3.75
5.00
6.66
8.88
(s)