Datasheet

TS4990 Electrical characteristics
Doc ID 9309 Rev 13 17/33
Figure 56. Signal to noise ratio vs. power
supply with a weighted filter
Figure 57. Output noise voltage
device ON
2.5 3.0 3.5 4.0 4.5 5.0
80
85
90
95
100
105
110
Av = 2
Cb = 1 μ F
THD+N < 0.7%
Tamb = 25 ° C
RL=16 Ω
RL=4 Ω
RL=8 Ω
Signal to Noise Ratio (dB)
Power Supply Voltage (V)
246810
10
15
20
25
30
35
40
45
Vcc=2.2V to 5.5V
Cb=1 μ F
RL=8 Ω
Tamb=25 ° C
A Weighted Filter
Unweighted Filter
Output Noise Voltage ( Vrms)
Closed Loop Gain
Figure 58. Signal to noise ratio vs. power
supply with a weighted filter
Figure 59. Output noise voltage device in
Standby
2.5 3.0 3.5 4.0 4.5 5.0
70
75
80
85
90
95
100
Av = 10
Cb = 1 μ F
THD+N < 0.7%
Tamb = 25 ° C
RL=16 Ω
RL=4 Ω
RL=8 Ω
Signal to Noise Ratio (dB)
Power Supply Voltage (V)
246810
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Vcc=2.2V to 5.5V
Cb=1μF
RL=8Ω
Tamb=25°C
A Weighted Filter
Unweighted Filter
Output Noise Voltage ( Vrms)
Closed Loop Gain