bd5445efv ROHM Co. Ltd., bd5445efv Datasheet - Page 5

• Manufacturer Part Number: bd5445efv
• Description: Analog Input / Single End Output Class-d Speaker Amplifier
• Manufacturer: ROHM Co. Ltd.

●Typical Characteristics Data (SE×2ch）Measured on ROHM’s evaluation board.
© 2010 ROHM Co., Ltd. All rights reserved.
BD5445EFV
www.rohm.com
-10
Fig.9
40
35
30
25
20
15
10
-5
5
0
10
Fig.11 Waveform when releasing Soft-mute
10V/div.
2V/div.
10V/div.
10V/div.
2V/div.
Vcc=24V
Po=1W
fin=200Hz
Vcc=24V
Gain=20dB
FILP=22uF
Waveform when releasing Power-down
Vcc=24V
RL=8Ω
Po=1W
L=47uH
C=0.39uF
Fig.7 Frequency－Voltage gain
100
FREQUENCY(Hz)
1000
Gain=38dB
Gain=32dB
Gain=26dB
Gain=20dB
MUTEX
Speaker
Output
10000
Speaker
Output
FILP
PDX
50ms/div.
10ms/div.
100000
5/31
-100
-120
-140
-20
-40
-60
-80
Fig.10
Fig.12 Waveform when activating Soft-mute
0
10
10V/div.
10V/div.
2V/div.
10V/div.
2V/div.
Vcc=24V
RL=8Ω
No Signal
BW=20～20kHz
Vcc=24V
Gain=20dB
FILP=22uF
Fig.8 FFT of Output Noise Voltage
Waveform when activating Power-down
100
Speaker
Output
FREQUENCY(Hz)
1000
MUTEX
FILP
Speaker
Output
PDX
Vcc=24V
Po=1W
fin=200Hz
Technical Note
2010.05 - Rev.B
10000
10ms/div.
50ms/div.
100000