LMH6503: LMH6503 shows diode-like behavior

Gabor Fangmann

Part Number: LMH6503

Hi, i am a student and doing my first laborate design, its main application is a two channel signal generator.
I use two LMH6503s to scale the amplitudes.

Sadly the LMH6503s cut off the negative half-wave of mz sine signal, the amplification of upper half works though.

Supply: +-5V
Sine is single-ended on +Vin with +- 300mV.
GND on -Vin and Vref.

over 5 years ago

0 Sima Jalaleddine over 5 years ago

TI__Mastermind 29595 points

Hello Gabor,

Would you be able to share your schematic? You can use the insert file or insert/edit media icon within the reply window. Also, would you be able to share the setup of these amplifiers, as in the characteristics of your input signal and power supplies.

Thank you,

Sima

0 kai klaas69 over 5 years ago

Guru 140200 points

Hi Gabor,

and some scope plots would also be helpful.

Kai

0 Sima Jalaleddine over 5 years ago

TI__Mastermind 29595 points

Hello Gabor,

Would you be able to provide the information suggested by myself and Kai?

Thank you,

Sima

0 Sima Jalaleddine over 5 years ago in reply to Sima Jalaleddine

TI__Mastermind 29595 points

Hello Gabor,

I am closing this thread due to inactivity, please reply or start a new thread if further support is needed.

Thank you,

Sima

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LMH6503: LMH6503 shows diode-like behavior