TS4855_04 Datasheet, PDF (13/27 Pages) STMicroelectronics – LOUDSPEAKER & HEADSET DRIVER WITH VOLUME CONTROL

Electrical Characteristics
TS4855
Figure 19: Speaker output power vs. power
supply voltage (Output modes 1, 3, 5, 7)
2.0
F = 1kHz
1.8 _{BW < 125kHz}
1.6 ^{Tamb = 25°C}
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.5
3.0
3.5
8Ω
4Ω
4.0
4.5
Vcc (V)
16 Ω
5.0
5.5
Figure 22: Headphone output power vs. power
supply voltage (Output modes 2, 3, 4, 5, 6, 7)
450
F = 1kHz
400 _{BW < 125kHz}
350 ^{Tamb = 25°C}
300
16 Ω
250
200
150
32 Ω
100
50
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
Figure 20: Speaker output power vs. power
supply voltage (Output modes 1, 3, 5, 7)
2.4
2.2 ^{F = 1kHz}
BW < 125kHz
2.0 _{Tamb = 25°C}
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
2.5
3.0
3.5
8Ω
4Ω
4.0
4.5
Vcc (V)
16 Ω
5.0
5.5
Figure 23: Speaker output power vs. load
resistance (Output modes 1, 3, 5, 7)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
4
THD+N=10%
Vcc = 5V
F = 1kHz
BW < 125kHz
Tamb = 25°C
THD+N=1%
6
8
10
12
14
16
Load Resistance (Ohm)
Figure 21: Headphone output power vs. power
supply voltage (Output modes 2, 3, 4, 5, 6, 7)
350
F = 1kHz
300 ^{BW < 125kHz}
Tamb = 25°C
250
16 Ω
200
150
100
32 Ω
50
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
Figure 24: Speaker output power vs. load
resistance (Output modes 1, 3, 5, 7)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
4
THD+N=10%
Vcc = 3V
F = 1kHz
BW < 125kHz
Tamb = 25°C
THD+N=1%
6
8
10
12
14
16
Load Resistance (ohm)
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