TS419-TS421
Fig. 68: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
Fig. 69: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
90
Av = 4
Cb = 1µF
THD+N < 0.5%
85 Tamb = 25°C
RL=32Ω
80
RL=8Ω
75
RL=16Ω
70
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Power Supply Voltage (V)
100
Av = 4
Cb = 1µF
95 THD+N < 0.5%
Tamb = 25°C
90
RL=32Ω
85
RL=8Ω
RL=16Ω
80
75
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Power Supply Voltage (V)
Fig. 70: Noise Floor
Fig. 71: Noise Floor
40
30
20
10
0
20
Standby=OFF
Standby=ON
RL>=16Ω
Vcc=5V
Av=4
Cb = 1µF
Input Grounded
Bw < 125kHz
Tamb=25°C
100
1000
Frequency (Hz)
10000 20k
Fig. 72: PSRR vs Power Supply Voltage
0
Vripple = 100mVrms
-10 Rfeed = 40kΩ
-20 Input = floating
Cb = 1µF
-30 RL >= 16Ω
Tamb = 25°C
-40
-50
Vcc = 2V
-60
-70
Vcc = 5V, 3.3V & 2.5V
-80
100
1000
10000
Frequency (Hz)
100000
40
30
20
10
0
20
Standby=OFF
Standby=ON
RL>=16Ω
Vcc=2V
Av=4
Cb = 1µF
Input Grounded
Bw < 125kHz
Tamb=25°C
100
1000
Frequency (Hz)
10000 20k
Fig. 73: PSRR vs Input Capacitor
0
Vripple = 200mVpp
-10
Av = 4, Vcc = 5V
Input = grounded
-20
Cin = 1µF, 220nF
Cb = 1µF, Rin = 20kΩ
RL >= 16Ω
Tamb = 25°C
-30
-40
-50
Cin = 100nF
-60
100
1000
10000
Frequency (Hz)
100000
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