TS4972 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TS4972' PDF : 30 Pages View PDF
Electrical Characteristics
TS4972
Figure 67: THD + N vs Frequency
1
RL = 16Ω, Vcc = 3.3V
Gv = 10, Cb = 1µF
BW < 125kHz
Tamb = 25°C
0.1
Pout = 280mW
Pout = 140mW
0.01
20
100
1000
Frequency (Hz)
Figure 68: THD + N vs Frequency
10000
1
RL = 16Ω, Vcc = 2.6V
Gv = 10, Cb = 1µF
BW < 125kHz
Tamb = 25°C
0.1
Pout = 160mW
0.01
20
Pout = 80mW
100
1000
Frequency (Hz)
10000
Figure 69: Signal to Noise Ratio vs Power
Supply with Unweighted Filter (20Hz
to 20kHz)
100
90
RL=16Ω
RL=8Ω
80
RL=4Ω
70
Gv = 2
60
Cb = Cin = 1µF
THD+N < 0.4%
Tamb = 25°C
50
2.5
3.0
3.5
4.0
4.5
5.0
Vcc (V)
Figure 70: Signal to Noise Ratio vs Power
Supply with Weighted Filter Type A
110
100
RL=16Ω
RL=8Ω
90
RL=4Ω
80
Gv = 2
70
Cb = Cin = 1µF
THD+N < 0.4%
Tamb = 25°C
60
2.5
3.0
3.5
4.0
4.5
5.0
Vcc (V)
Figure 71: Frequency Response Gain vs Cin,
& Cfeed
10
5
0
-5
-10
-15
-20
-25
10
Cfeed = 330pF
Cfeed = 680pF
Cin = 470nF Cfeed = 2.2nF
Cin = 22nF
Cin = 82nF
Rin = Rfeed = 22kΩ
Tamb = 25°C
100
1000
Frequency (Hz)
10000
Figure 72: Signal to Noise Ratio vs Power
Supply with Unweighted Filter (20Hz
to 20kHz)
90
80
70
RL=16Ω RL=4Ω
RL=8Ω
60
Gv = 10
Cb = Cin = 1µF
THD+N < 0.7%
Tamb = 25°C
50
2.5
3.0
3.5
4.0
4.5
5.0
Vcc (V)
17/30
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