ssm2311 Analog Devices, Inc., ssm2311 Datasheet - Page 9

• Manufacturer Part Number: ssm2311
• Description: Filterless High Efficiency Mono 3 W Class-d Audio Amplifier
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
Figure 21. Maximum Output Power vs. Supply Voltage, R
Figure 22. Maximum Output Power vs. Supply Voltage, R
Figure 23. Maximum Output Power vs. Supply Voltage, R
3.5
3.0
2.5
2.0
1.5
1.0
0.5
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
0
2.5
2.5
2.5
f = 1kHz
GAIN = 18dB
R
f = 1kHz
GAIN = 18dB
R
f = 1kHz
GAIN = 6dB
R
L
L
L
= 4Ω, 33µH
= 3Ω, 33µH
= 8Ω, 33µH
3.0
3.0
3.0
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
3.5
3.5
3.5
10%
10%
4.0
4.0
4.0
10%
1%
1%
1%
4.5
4.5
4.5
L
L
L
= 4 Ω, A
= 3 Ω, A
= 8 Ω, A
V
V
V
5.0
5.0
5.0
= 18 dB
= 18 dB
= 6 dB
Rev. PrA | Page 9 of 20
Figure 24. Maximum Output Power vs. Supply Voltage, R
Figure 25. Maximum Output Power vs. Supply Voltage, R
100
3.5
2.5
2.0
1.5
1.0
0.5
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
90
80
70
60
50
40
30
20
10
3
0
0
0
2.5
2.5
0
f = 1kHz
GAIN = 6dB
R
f = 1kHz
GAIN = 6dB
R
L
L
Figure 26. Efficiency vs. Output Power into 8 Ω
= 4Ω, 33µH
= 3Ω, 33µH
0.2
V
DD
3.0
3.0
0.4
= 2.5V
0.6
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
V
OUTPUT POWER (W)
DD
3.5
3.5
0.8
= 3.6V
10%
10%
1.0
4.0
4.0
1.2
1%
1.4
1%
R
V
L
DD
4.5
4.5
1.6
= 8Ω, 33µH
L
L
= 5V
SSM2311
= 4 Ω, A
= 3 Ω, A
1.8
V
V
5.0
5.0
2.0
= 6 dB
= 6 dB