SGM4891 Datasheet, PDF (5/11 Pages) SG Micro Corp – 1.2W Audio Power Amplifier

SGM4891
1.2W Audio Power Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS
PSRR vs. Frequency
80
70
60
50
40
V₊ = +5.0V
30 _{CB = 1.0μF}
20 ^RL ^{= 8Ω}
10
A_V = 2V/V
V_RIPPLE = 200mV_P-P
0
0.01
0.1
1
10
100
Frequency (kHz)
0.3
0.25
0.2
0.15
0.1
0.05
0
0
Power Dissipation vs. Output Power
V₊ = +3.0V, f = 1kHz, R_L = 8Ω
THD+N ≤ 1%, BW < 80kHz
0.1 0.2 0.3 0.4 0.5 0.6
Output Power (W)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
Power Dissipation vs. Output Power
V₊ = +5.0V, f = 1kHz, R_L = 8Ω
THD+N ≤ 1%, BW < 80kHz
0.5
1
1.5
Output Power (W)
Power Dissipation vs. Output Power
0.3
0.25
0.2
0.15
0.1
0.05
0
0
V₊ = +2.6V, f = 1kHz, R_L = 8Ω
THD+N ≤ 1%, BW < 80kHz
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Output Power (W)
Output Power vs. Supply Voltage
2.5
f = 1kHz
2 BW < 80kHz
R_L = 8Ω
1.5
1
10% THD+N
0.5
1% THD+N
0
2.5
3
3.5
4
4.5
5
5.5
Supply Voltage (V)
Supply Current vs. Temperature
7
6
V₊ = 5.0V
5
4
V₊ = 3.0V
3
2
-40
-15
10
35
60
85
Temperature (℃)
SG Micro Corp
www.sg-micro.com
5