Texas Instruments Ultra-Low EMI, Filterless, 2.65W, Mono, Class D Audio Power Amplifier (LLP-8) LM4675SDBD/NOPB LM4675SDBD/NOPB 데이터 시트
제품 코드
LM4675SDBD/NOPB
0
250
500
750
1000
1250
1500
OUTPUT POWER (mW)
PO
W
ER
D
ISSI
PAT
IO
N
(
mW
)
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 2.5V
0
50
100
150
200
250
0
100
200
300
400
500
0
500
1000
1500
2000
OUTPUT POWER (mW)
PO
W
ER
D
ISSI
PAT
IO
N
(
mW
)
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 2.5V
0
500
1000
1500
2000
OUTPUT POWER (mW)
EF
F
IC
IEN
C
Y
(%
)
V
DD
= 5V
V
DD
= 3.6V
V
DD
= 2.5V
0
10
20
30
40
50
60
70
80
90
100
0
500
1000
1500
2000
OUTPUT POWER (mW)
EF
F
IC
IEN
C
Y
(%
)
V
DD
= 2.5V
0
10
20
30
40
50
60
70
80
90
100
V
DD
= 3.6V
V
DD
= 5V
10
100
1000
10000
100000
FREQUENCY (Hz)
T
H
D
+N
(%
)
0.001
0.01
0.1
1
10
100
10
100
1000
10000
100000
FREQUENCY (Hz)
T
H
D
+N
(%
)
0.001
0.01
0.1
1
10
100
SNAS353C – AUGUST 2006 – REVISED MAY 2013
Typical Performance Characteristics (continued)
The performance graphs were taken using the Audio Precision AUX-0025 Switching Amplifier measurement Filter in series
with the LC filter on the demo board.
with the LC filter on the demo board.
THD + N vs Frequency
THD + N vs Frequency
V
DD
= 3.6V, P
OUT
= 100mW, R
L
= 4
Ω
V
DD
= 5V, P
OUT
= 150mW, R
L
= 4
Ω
Figure 11.
Figure 12.
Efficiency vs. Output Power
Efficiency vs. Output Power
R
L
= 4
Ω
, f = 1kHz
R
L
= 8
Ω
, f = 1kHz
Figure 13.
Figure 14.
Power Dissipation vs. Output Power
Power Dissipation vs. Output Power
R
L
= 4
Ω
, f = 1kHz
R
L
= 8
Ω
, f = 1kHz
Figure 15.
Figure 16.
Copyright © 2006–2013, Texas Instruments Incorporated
7
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