GMA7496L Datasheet, PDF (7/11 Pages) Gamma Microelectronics Inc. – 2W+2W AMPLIFIER W/ DC VOLUME CONTROL

AA
MICROELECTRONICS
Audio Amp.
GMA7496L
2W+2W AMPLIFIER W/ DC VOLUME CONTROL
TYPICAL PERFORMANCE CHARACTERISTICS
Iq (mA)
34
32
30
28
V_I= 0
26
24
22
20
18
16
10
11 12 13 14 15 16 17 18
Supply Voltage (V)
Figure 1. Quiescent current vs. Supply voltage
Vodc- Vsvr (V)
300
280
260
240
220
V_I= 0
200
180
160
140
120
100
10
11 12 13 14 15 16 17 18
Supply Voltage (V)
Figure 3. Output DC Offset vs. Supply Voltage
Vodc (V)
10
9.5
9.0
8.5
8.0
V_I= 0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
10 11 12 13 14 15 16 17 18
Supply Voltage (V)
Figure 2. Output DC Voltage vs. Supply Voltage
Output Power (W)
4.0
3.5 ^{RI= 8W}
F= 1kHz
3.0
2.5
THD= 10%
2.0
1.5
THD= 1%
1.0
0.5
0
10 11 12 13 14 15 16 17 18
Supply Voltage (V)
Figure 4. Output DC Voltage vs. Supply Voltage
Distortion (%)
10
V_S= 12V
R_I= 8W
1.0
F= 15kHz
0.1
F= 1kHz
0.01
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Output Power (V)
Figure 5. Output DC Offset vs. Supply Voltage
Colosed Loop (dB)
32
31
30
29
28
27
26
R_I= 8W
Pout= 0.5W
25
Cin= 470nF
24
Cout= 1000µF
23
Csvr= 470µF
22
21
20
0.02
0.2
2.0
20
Frequency (kHz)
Figure 6. Closed Loop gain vs. Frequency
7