ssm2311 Analog Devices, Inc., ssm2311 Datasheet - Page 11

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

Preliminary Technical Data
Figure 33. Power Dissipation vs. Output Power into 4 Ω at V
Figure 34. Power Dissipation vs. Output Power into 3 Ω at V
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
350
300
250
200
150
100
50
0
0
0
0
0
0
V
R
V
R
Figure 35. Supply Current vs. Output Power into 8 Ω
DD
L
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7
DD
L
V
= 3Ω, 33µH
= 4Ω, 33µH
0.2
DD
= 3.6V
= 3.6V
0.2
= 2.5V
0.4
0.4
0.6
OUTPUT POWER (W)
OUTPUT POWER (W)
OUTPUT POWER (W)
0.6
V
0.8
DD
= 3.6V
1.0
0.8
1.2
1.0
V
DD
1.4
= 5V
1.2
R
L
1.6
= 8Ω, 33µH
1.4
1.8
DD
DD
= 3.6 V
= 3.6 V
2.0
1.6
Rev. PrA | Page 11 of 20
–100
–10
–20
–30
–40
–50
–70
–80
–90
–60
600
500
400
300
200
100
800
700
600
500
400
300
200
100
0
0
0
10
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
Figure 38. Power Supply Rejection Ratio vs. Frequency
Figure 36. Supply Current vs. Output Power into 4 Ω
Figure 37. Supply Current vs. Output Power into 3 Ω
V
DD
V
0.2
DD
= 2.5V
= 2.5V
0.4
100
0.6
0.8
V
OUTPUT POWER (W)
DD
OUTPUT POWER (W)
FREQUENCY (Hz)
= 3.6V
1
V
DD
1.2
1k
= 3.6V
1.4
1.6
V
DD
10k
1.8
R
R
L
L
= 5V
V
= 4Ω, 33µH
= 3Ω, 33µH
DD
2
SSM2311
= 5V
2.2
100k
2.4