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TS421 数据表(PDF) 23 Page - STMicroelectronics

部件名 TS421
功能描述  360 mW mono amplifier with standby mode
PDF  42 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TS421 数据表(HTML) 23 Page - STMicroelectronics

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Figure 67. THD + N vs. frequency RL = 32 Ω
100
1000
10000
0.01
0.1
Vcc=2V, Po=13mW
Vcc=5V, Po=150mW
RL=32Ω
Av=4
Cb = 1
µF
Bw < 125kHz
Tamb=25°C
20k
20
Frequency (Hz)
Figure 68. Signal-to-noise ratio vs. power supply
voltage with unweighted filter (20 Hz to 20 kHz)
2.0
2.5
3.0
3.5
4.0
4.5
5.0
70
75
80
85
90
Av = 4
Cb = 1
µF
THD+N < 0.5%
Tamb = 25°C
RL=32Ω
RL=16Ω
RL=8Ω
Power Supply Voltage (V)
Figure 69. Signal-to-noise ratio vs power supply
voltage with weighted filter Type A
2.0
2.5
3.0
3.5
4.0
4.5
5.0
75
80
85
90
95
100
Av = 4
Cb = 1
µF
THD+N < 0.5%
Tamb = 25°C
RL=32Ω
RL=16Ω
RL=8Ω
Power Supply Voltage (V)
Figure 70. Noise floor Vcc = 5 V
100
1000
10000
0
10
20
30
40
Standby=OFF
Standby=ON
RL>=16Ω
Vcc=5V
Av=4
Cb = 1
µF
Input Grounded
Bw < 125kHz
Tamb=25°C
20k
20
Frequency (Hz)
Figure 71. Noise floor Vcc = 2 V
100
1000
10000
0
10
20
30
40
Standby=OFF
Standby=ON
RL>=16Ω
Vcc=2V
Av=4
Cb = 1
µF
Input Grounded
Bw < 125kHz
Tamb=25°C
20k
20
Frequency (Hz)
Figure 72. PSRR vs. power supply voltage
100
1000
10000
100000
-80
-70
-60
-50
-40
-30
-20
-10
0
Vcc = 2V
Vcc = 5V, 3.3V & 2.5V
Vripple = 100mVrms
Rfeed = 40kΩ
Input = floating
Cb = 1
µF
RL >= 16Ω
Tamb = 25°C
Frequency (Hz)
TS419, TS421
Electrical characteristics curves
DS3048 - Rev 7
page 23/42



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