TDA7468D Datasheet, PDF (18/22 Pages) STMicroelectronics – TWO BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR WITH BASS ALC SURROUND

TDA7468D
Table 15. BASS ALC
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
1
0
1
0
1
0
0
0
0
1
1
0
1
1
0
0
0
1
1
0
1
1
0
1
BASS ALC
ALC Mode
ON
OFF
Detector
ON
OFF
Release Current Circuit
ON
OFF
Attack Time Resistor
12.5KΩ
25KΩ
50KΩ
100KΩ
Threshold
700mVrms
485mVrms
320mVrms
170mVrms
Attack Mode
MODE 1: Fixed Resistor
MODE 2: Adaptive
Figure 9. BASS ALC : Threshold curve
VO
(VRMS)
1
Supply Voltage : 9.0V
Frequency : 60Hz
Bassfilter : 60Hz/28dB boost
Internal release circuit : ON
Attack mode : 12.5kohm, mode2(adaptive)
Threshold1
Threshold2
Threshold3
Threshold4
0.1
D00AU1100
0.01
0.1
1
VIN(VRMS)
Figure 10. BASS ALC : THD
THD
[%]
10
1
Supply Voltage : 9.0V
Frequency : 60Hz
Bassfilter : 60Hz/28dB boost
Internal release circuit : ON
Attack mode : 12.5kohm, mode2(adaptive)
0.1
0.01
0.001
0.01
0.1
D99AU1101A
1 VIN(VRMS)
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