TS4855_04 Datasheet, PDF (17/27 Pages) STMicroelectronics – LOUDSPEAKER & HEADSET DRIVER WITH VOLUME CONTROL

Electrical Characteristics
TS4855
Figure 43: Spkout SNR vs. power supply voltage,
unweighted filter, BW = 20 Hz to 20 kHz
110
Vcc = 3V
108
Vcc = 5V
106
RL=8Ω
Unweighted filter (20Hz to 20kHz)
104
THD + N < 0.7%
102
Tamb = 25°C
100
98
96
94
92
90
1
2
3
4
5
6
7
Output Mode
Figure 46: HDout SNR vs. power supply
voltage, weighted filter A, BW=20Hz to 20kHz
100
98
Vcc = 3V
Vcc = 5V
96
RL = 32Ω
94
G=+6dB
Weighted filter A (20Hz to 20kHz)
92
THD + N < 0.7%
90
Tamb = 25°C
88
86
84
82
80
1
2
3
4
5
6
7
Output Mode
Figure 44: Spkout SNR vs. power supply voltage,
weighted filter A, BW = 20 Hz to 20 kHz
110
Vcc = 3V
108
Vcc = 5V
RL=8Ω
106
Weighted filter A (20Hz to 20kHz)
THD + N < 0.7%
104
Tamb = 25°C
102
100
98
96
1
2
3
4
5
6
7
Output Mode
Figure 47: HDout SNR vs. Power supply
voltage, unweighted filter, BW=20Hz to 20kHz
100
98
Vcc = 3V
Vcc = 5V
96 _{RL = 32Ω}
94 G=+12dB
Unweighted filter
92 _{(20Hz to 20kHz)}
90 THD + N < 0.7%
Tamb = 25°C
88
86
84
82
80
1
2
3
4
5
6
7
Output Mode
Figure 45: HDout SNR vs. power supply voltage,
unweighted filter, BW= 20 Hz to 20 kHz
100
Vcc = 3V
98
Vcc = 5V
96
RL = 32Ω
G=+6dB
94
Unweighted filter (20Hz to 20kHz)
92
THD + N < 0.7%
Tamb = 25°C
90
88
86
84
82
80
1
2
3
4
5
6
7
Output Mode
Figure 48: HDout SNR vs. power supply voltage,
weighted filter A, BW = 20 Hz to 20 kHz
100
98
Vcc = 3V
96
Vcc = 5V
RL = 32Ω
94 G=+12dB
92 ^{Weighted filter A}
(20Hz to 20kHz)
90 THD + N < 0.7%
88 ^{Tamb = 25°C}
86
84
82
80
1
2
3
4
5
6
7
Output Mode
17/27