Datasheet

Technical Note
5/31
BD5446EFV
www.rohm.com
2011.06 - Rev.C
© 2011 ROHM Co., Ltd. All rights reserved.
●Electrical characteristic curves(V
CC
=18V,Ta=25℃,R
L_SP
=8Ω,RL_DA=20kΩ,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)
VOL TAG E G AIN(dB)
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)
NOISE FFT(dBV)
Without signal
BW=20～20KHz
0.01
0.1
1
10
100
10 100 1k 10k 100k
FREQUENCY(Hz)
THD+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)
CROSSTALK(dB)
BW=20～20KHz
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1k 10k 100k
FREQUENCY(Hz)
CROSSTALK(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)
THD+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)
EFFICIENCY(%)