FAB3103 Datasheet, PDF (6/13 Pages) Fairchild Semiconductor – 2.3 Watt Class-D Audio Amplifier with Integrated Boost Regulator and Automatic Gain Control

Typical Performance Characteristics
Unless otherwise noted: AGCT = GND, R_L = 8Ω + 33µH, f = 1KHz, audio measurement bandwidth 22Hz to 20KHz
(AES17), V_BATT = 3.6V, T_A = 25°C, typical external component values.
5
Inputs AC grounded
4.5
4
3.5
3
2.5
2
2.5
3
3.5
4
4.5
5
Supply Voltage (V)
Figure 3. Quiescent Supply Current
vs. Supply Voltage
-80
Inputs AC grounded
-90
-100
-110
-120
-130
-140
-150
5.5
0
2
4
6
8 10 12 14 16 18 20
Frequency (KHz)
Figure 4. A-Weighted Output Noise vs. Frequency
10
f = 1KHz
VBATT=4.8V
VBATT=4.2V
VBATT=3.6V
1
VBATT=2.8V
0.1
10
Po = 100mW
Po = 1W
1
0.1
0.01
0.01
0.001
0.01
0.1
1
10
Output Power (W)
Figure 5. Total Harmonic Distortion + Noise
vs. Output Power
0.001
10
100
1000
Frequency (Hz)
10000
Figure 6. Total Harmonic Distortion + Noise
vs. Frequency
1
0.9 ^{f = 1KHz}
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.0
0.5
1.0
1.5
Output Power (W)
VBATT = 4.2V
VBATT = 3.6V
VBATT = 2.8V
2.0
2.5
Figure 7. Supply Current vs. Output Power
100
90
f = 1KHz
80
70
60
50
40
30
20
10
0
0.01
0.1
1
Output Power (W)
VBATT=4.2V
VBATT=3.6V
VBATT=2.8V
10
Figure 8. Efficiency vs. Output Power
© 2011 Fairchild Semiconductor
FAB3103 • Rev. 1.0.2
6
www.fairchildsemi.com