TS421-2 STMicroelectronics, TS421-2 Datasheet - Page 21

• Manufacturer Part Number: TS421-2
• Description: 360mW MONO AMPLIFIER WITH STANDBY MODE
• Manufacturer: STMicroelectronics

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