TS4974_07 STMICROELECTRONICS [STMicroelectronics], TS4974_07 Datasheet - Page 13

• Manufacturer Part Number: TS4974_07
• Description: 1W differential audio power amplifier with up/down digital volume control pins
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

TS4974
Figure 26. SNR vs. supply voltage
Figure 28. Output power vs. supply voltage
Figure 30. Current consumption vs. supply
110
108
106
104
102
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
98
96
94
92
90
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.5
2.5
F = 1kHz
BW < 125 kHz
Tamb = 25
0
Unweighted filter (20Hz to 20kHz)
F = 1kHz
G = 12dB
THD + N < 0.5%
Tamb = 25
No load
Tamb = 25
3.0
voltage
3.0
1
°
°
C
C
°
C
RL=8
3.5
2
Ω
3.5
Vcc (V)
Vcc (V)
Vcc (V)
4.0
3
8
Ω
4.0
RL=16
4.5
4
16
Ω
32
Ω
Ω
4.5
5
5.0
6
5.0
5.5
Figure 27. Output power vs. supply voltage
Figure 29. Output power vs. load resistance
Figure 31. Standby current vs. supply voltage
1.0
0.8
0.6
0.4
0.2
0.0
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
0.4
0.3
0.2
0.1
0.0
2.5
8
F = 1kHz
BW < 125 kHz
Tamb = 25
0
Vcc=2.6V
No load
Tamb = 25
Vcc=5.5V
12
3.0
1
°
C
°
C
Vcc=5V
16
Load resistance (
2
Vcc=4.5V
3.5
Electrical characteristics
Vcc (V)
Vcc (V)
20
3
Vcc=4V
4.0
8
Ω
Ω
24
Vcc=3.3V
4
)
16
32
Ω
THD+N = 1%
Cb = 1
BW < 125kHz
Tamb = 25
Ω
4.5
5
28
Vcc=3V
μ
F
°
C
13/25
6
5.0
32