APA2120 Datasheet, PDF (17/30 Pages) Anpec Electronics Coropration – Stereo 2-W Audio Power Amplifier (with DC_Volume Control)

APA2120/2121
Typical Characteristics (Cont.)
Output Power vs. Load Resistance
3
VDD=5V
AV=2
2.5 BTL
2
1.5
1
THD+N=10%
0.5
THD+N=1%
0
4 8 12 16 20 24 2832 3640 44 4852 5660 64
Load Resistance (Ω)
Output Power vs. Load Resistance
0.7
VDD=5V
0.6
AV=1
SE
0.5
0.4
0.3
0.2
THD+N=10%
0.1
THD+N=1%
0
4 8 12 1620 24 2832 3640 44 4852 566064
Load Resistance (Ω)
Close Loop Response
+12
VDD=5V
RL=8Ω
+10 AV=2
BTL
CO=330µF
+8
+6
AV=2
+4
AV=5
AV=10
+2
-0
20
100
1k
20k
Frequency (Hz)
Close Loop Response
+6
VDD=5V
RL=32Ω
+4 ^AV=1
SE
CO=330µF
+2
+0
AV=1
AV=2.5
-2
AV=5
-4
-6
20
100
1k
20k
Frequency (Hz)
Copyright  ANPEC Electronics Corp.
17
Rev. A.1 - Mar., 2003
www.anpec.com.tw