Rohm BD5446EFV, Техническая заметка

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Technical Note
5/30
BD5446EFV
www.rohm.com
2010.05 - Rev.B
© 2010 ROHM Co., Ltd. All rights reserved.
●
Electrical characteristic curves (V
CC
=18V,Ta=25
℃
,R
L_SP
=8 Ω ,R
L_DA
=20k Ω ,Gain=20dB,fin=1kHz,fs=48kHz)
Measured by ROHM designed 4layer board.
Fig.13 Fig.14 Fig.15
Fig.16
Fig.17
Fig.18
Fig.19
Efficiency – Output power Voltage gain - Frequency
FFT of output noise voltage
THD+N - Output power THD+N - Frequency
Crosstalk - Output power
Crosstalk - Frequency
20
22
24
26
28
30
32
34
36
38
40
10 100 1k 10k 100k
FREQUENCY(Hz)
V
O
L
T
AG
E G
AI
N
(d
B)
Po=1W
L=22µH
C=0.47µF
Cg=0.068µF
-140
-120
-100
-80
-60
-40
-20
0
10 100 1k 10k 100k
FREQUENCY(Hz)
N
O
IS
E
FF
T(
dB
V
)
Without signal
BW=20
～
20KHz
0.01
0.1
1
10
100
10 100 1k 10k 100k
FREQUENCY(Hz)
T
HD+
N(
%
)
Po=1W
BW=20
～ 20KHz
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10 100
OUTPUT POWER(W)
CRO
S
S
T
A
LK
(d
B
)
BW=20
～
20KHz
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1k 10k 100k
FREQUENCY(Hz)
C
R
O
SS
T
A
LK(
dB)
Po=1W
BW=20
～ 20KHz
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10 100
OUTPUT POWER(W)
T
HD+
N(
%
)
BW=20 ～ 20KHz
6KHz
100Hz
1KHz
0
10
20
30
40
50
60
70
80
90
100
0 5 10 15 20
OUTPUT POWER(W /ch)
EF
F
IC
IEN
C
Y
(%
)
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