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TS4975 Datasheet(PDF) 16 Page - STMicroelectronics

Part # TS4975
Description  Stereo Headphone Drive Amplifier with Digital Volume Control via IC Bus
PDF  33 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4975 Datasheet(HTML) 16 Page - STMicroelectronics

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Electrical Characteristics
TS4975
16/33
Figure 48. SNR versus power supply voltage
Figure 49. SNR versus power supply voltage
Figure 50. Frequency response
Figure 51. Current consumption versus power
supply voltage
Figure 52. 3dB lower cut off frequency versus
input capacitance
Figure 53. 3dB lower cut off frequency versus
output capacitance
2.5
3.3
5
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
RL = 32
Ω
RL = 16
Ω
Out. mode 1 - 8
PHG, G = +18dB
Unweighted filter (20Hz to 20kHz)
THD+N < 0.5%
Tamb = 25
°C
Vcc (V)
2.5
3.3
5
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
RL = 32
Ω
RL = 16
Ω
Out. mode 1 - 8
PHG, G = +18dB
Weighted filter type A
THD+N < 0.5%
Tamb = 25
°C
Vcc (V)
100
1000
10000
0
2
4
6
8
10
12
14
16
18
20
20
Vcc = 5V, 3.3V, 2.5V
G = +2dB
Vcc = 5V, 3.3V, 2.5V
G = +18dB
Output mode 1 - 8
RL = 32, 16
Ω
Cin = 330nF
SE, PHG
BW < 125kHz
Tamb = 25
°C
Frequency (Hz)
0
12345
0
1
2
3
4
5
6
Reset state
PHG, Out. mode 5, 6, 7, 8
PHG, Out. Mode 1, 2, 3, 4
SE, Out. mode 5, 6, 7, 8
SE, Out. mode 1, 2, 3, 4
No loads
Tamb = 25
°C
Vcc (V)
1
10
100
Typical Input
Impedance
Maximum Input
Impedance
Minimum Input
Impedance
All gain setting
Tamb=25
°C
Input Capacitor Cin (
µF)
0.1
100
1000
1
10
100
RL=32
Ω
Output capacitor Cout (
µF)
All gain setting
Tamb = 25
°C
RL=16
Ω



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