Fully Differential Buffer For ADS1675

Maxim Galkin

Other Parts Discussed in Thread: THS4503, THS4131, THS4120, ADS1675, THS4121

Hello!
I want to use ADS1675 for measurement 25 usec pulses with amplitude 2,5V and 2,5V offset. Pulse repetition frequency is 8kHz. I want to use fully differential Bessel filter on THS4131 (Gain = 1, Vcc=+5V, Vss=-5V). Can you check right amplifier choice for my application from THS4121, THS4120, THS4131 and THS4503? The criteria of choose is maximum SNR for pulses amplitude measurement.

P.S. You can suggest me another fully differential amplifier too.
With best regards, Maxim Galkin.

over 10 years ago

0 Rohit Bhat over 10 years ago

TI__Genius 15975 points

Hello Maxim,

From the datasheet comparison of noise density vs frequency, it definitely seems to me that the THS4131 is an excellent choice to maximize the SNR for your application. Also, the fully differential Bessel filter circuit on THS4131 should ease your development cycle time for the measurement.

Best Regards,

Rohit

0 Maxim Galkin over 10 years ago in reply to Rohit Bhat

Intellectual 460 points

Rohit, thanks.

I will use THS4131 in my device.

With best regards, Maxim Galkin.

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Fully Differential Buffer For ADS1675