LM1875: Input Signal

Holly Gu

Part Number: LM1875
Other Parts Discussed in Thread: LM384

Hi Team,

My customer's use case is input signal is 0~2.5V sine, frequency 5Khz, DC offset is 1.25V. Can LM1875 support this?

0 Yanming Gong over 4 years ago

Hi Holly,

Yes, LM1875 can support it.

Regards,

Derek

0 Holly Gu over 4 years ago in reply to Yanming Gong

Can LM384 also support this kind of input?LM1875 is 20W while customer only need 5W.

0 Yanming Gong over 4 years ago in reply to Holly Gu

Hi Holly,

LM384 only support +-0.5V input.

Does customer consider Class-D amplifier? For 5W application, I suggest TPA3138, TPA3113.

They can get more technical support.

Regards,

Derek

0 Holly Gu over 4 years ago in reply to Yanming Gong

Hi Derek,

To TPA3138, TPA3113, can the input signal phase difference 180 degrees?

0 Yanming Gong over 4 years ago in reply to Holly Gu

Hi Holly,

TPA3138 and TPA3113 have two channels, and each channel is independent. So the two channels input signal phase can have 180 degree pahse.

Regards,

Derek

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