BD5445EFV-E2 Просмотр технического описания (PDF) - ROHM Semiconductor

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производитель

BD5445EFV-E2

Analog Input / Single End Output Class-D Speaker Amplifier

ROHM Semiconductor 

BD5445EFV

●Typical Characteristics Data (SE×2ch）Measured on ROHM’s evaluation board.

Technical Note

40

35

30

25

20

15

10

5

0

-5

-10

10

Gain=38dB

Gain=32dB

Gain=26dB

Gain=20dB

Vcc=24V

RL=8Ω

Po=1W

L=47uH

C=0.39uF

100

1000

10000

FREQUENCY(Hz)

100000

Fig.7 Frequency－Voltage gain

0

-20

Vcc=24V

-40 RL=8Ω

No Signal

-60 BW=20～20kHz

-80

-100

-120

-140

10

100

1000

10000

FREQUENCY(Hz)

100000

Fig.8 FFT of Output Noise Voltage

Vcc=24V

Gain=20dB

FILP=22uF

10V/div.

Speaker

Output

FILP

2V/div.

PDX

10V/div.

50ms/div.

Fig.9 Waveform when releasing Power-down

Vcc=24V

Gain=20dB

FILP=22uF

10V/div.

Speaker

O u tpu t

FILP

2V/div.

10V/div.

PDX

50ms/div.

Fig.10 Waveform when activating Power-down

Vcc=24V

Po=1W

fin=200Hz

Speaker

Output

Speaker

O u tpu t

Vcc=24V

Po=1W

fin=200Hz

2V/div.

10V/div.

MUTEX

10ms/div.

Fig.11 Waveform when releasing Soft-mute

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2V/div.

10V/div.

MUTEX

10ms/div.

Fig.12 Waveform when activating Soft-mute

2010.05 - Rev.B

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