NCP4896 Datasheet, PDF (8/16 Pages) ON Semiconductor – 1.0 Watt Audio Power Amplifier with Earpiece Driving Capability

NCP4896
TYPICAL PERFORMANCE CHARACTERISTICS
0
−10 VP = 3.6 V
−20 ^{RF = Ri = 20 kW}
SE Mode
−30 R_L = 32 W
−40
V_ripple = 200 mV pk−pk
−50
C_b=0.47 mF
−60
−70
−80
−90 ^{Cb=1.0 mF}
−100
10
100
C_b= 4.7 mF
1000
10000
100000
FREQUENCY (Hz)
Figure 20. PSRR vs. C_b (SE Mode) @ VP = 3.6 V
0
−10
VP = 3.6 V
−20
RF = Ri = 20 kW and RF = Ri = 100 kW
SE Mode
−30
R_L = 8 W
−40
V_ripple = 200 mV pk−pk
−50
GAIN = 5
−60
−70
−80
−90
−100
10
GAIN = 1
100
1000
10000
100000
FREQUENCY (Hz)
Figure 21. PSRR vs. Gain (SE Mode) @ VP = 3.6 V
50
NCP4896 ON
40
30
VP = 3.6 V
RF = Ri = 20 kW
20 ^{BTL Mode}
R_L = 8 W
10
NCP4896 OFF
0
10
100
1000
10000
FREQUENCY (Hz)
Figure 22. Output Noise Voltage (BTL Mode)
@ VP = 3.6 V
50
VP = 3.6 V
40
RF = Ri = 20 kW
SE Mode
R_L = 32 W
30
20
NCP4896 ON
10
NCP4896 OFF
0
10
100
1000
10000
FREQUENCY (Hz)
Figure 23. Output Noise Voltage (SE Mode)
@ VP = 3.6 V
3.2
3.0
VP = 5.5 V
2.8
VP = 5.0 V
2.6
VP = 3.0 V
2.4
RF = Ri = 20 W
BTL MODE
2.2
VP = 2.2 V
R_L = 8 W
2.0
−40
−15
10
35
60
85
TEMPERATURE (C°)
Figure 24. Quiescent Current (BTL Mode) vs. VP
2.0
1.9
1.8
1.7
VP = 5.0 V
1.6
VP = 5.5 V
1.5
1.4
1.3
1.2
1.1
1.0
−40
VP = 3.0 V
VP = 2.2 V
−15
10
RF = Ri = 20 W
SE MODE
R_L =32 W
35
60
85
TEMPERATURE (C°)
Figure 25. Quiescent Current (SE Mode) vs. VP
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