MC4863 华龙欣科技(1)
Top View Top View TSSOP20Top View
Figure 1. Typical Audio Amplifier Application Circuit
THD+N vs Output Power THD+N vs Frequency
Power Derating Curve
0 1
2 3 4 5
6 0
50
100
150
500LFPM
+JEDEC board
500LFPM
2
+2.5in
2
+2.5in
Not attached
Ambient Temperature (℃)
P o w e r D i s s i p a t i o n (W )
0 1.5
0.5
1
1.5
2
Single -ended
R L
=3R L =4
V DD =5V
Output Power (W )
Power Dissipation vs
Output Power
0.5
1
2
THD+N vs Frequency THD+N vs Output Power THD+N vs Output Power
THD+N vs Output Power
THD+N vs Output Power THD+N vs Frequency
Output Power vs Load Resistance
P o w e r D i s s i p a t i o n (W )
200
400
600
0 250 500 7501000
Single -ended
R L
=4R L
=8R L
=16V DD =3.3V Output Power (mW )
Power Dissipation vs
Output Power
Output Power vs Supply Voltage Output Power vs Load Resistance
Output Power vs Load Resistance Power Dissipation vs Output Power
Supply Voltage
Power Dissipation vs
Noise Floor Output Power
Channel Separation Channel Separation
Supply Current vs Supply Voltage
FIGURE 2. Headphone Circuit
MC4863 is unity-gain stable, giving designer maximum system performance.
MC4863 should be used in low gain confi-gurations minimize THD+N values, and maximize to noise ratio. Low gain configurations require large input signals to obtain a given output power. Input signals equal to or greater
are available from sources such codecs. Please refer to the section,Audio Amplifier Design, for a more complete explanation of proper gain selection.