LNA for Ultrasound Front end

Veerasamy Vasudevan

We cannot use Ultrasonic front end ICs for our application as plenty of customization is required. Can you suggest a suitable LNA for Ultrasonic front end? Our Frequency range is 1MHz to 10MHz. One main criteria for LNA would be easier Impedance matching. Should we use Low Noise Operational amplifier or RF LNA? Which one will be more easy to interface with Ultrasonic transducer. The output of Transducers can have voltage of about 100uV or less to upto 10mV.

Thanks & Regards,

Veerasamy

over 8 years ago

0 Veerasamy Vasudevan over 8 years ago

Intellectual 390 points

Also the Operating range should be -55 to 125C. Thanks

0 Vishy Viswanathan over 8 years ago in reply to Veerasamy Vasudevan

TI__Mastermind 21685 points

We will get back to you on this. Thanks, Vishy

0 Vishy Viswanathan over 8 years ago in reply to Vishy Viswanathan

TI__Mastermind 21685 points

Veerasamy,

I suggest you post your question in TI precision amplifier forum below

e2e.ti.com/.../

They would be the best to guide.

Thanks,
Vishy

0 Se-Hee Whang over 8 years ago

Intellectual 390 points

I suggest that a simple way for finding a suitable device.
voltage gain vs frequency graph describes your curiosity.
If the gain of your design is specific values, then the gain of opamp should be bigger than it.
Moreover if you use a op amp, then I expect you may not consider the impedance matching in your application.

And I advice you the differential amplifier shows less noise than inverting or none inverting amplifier circuit.

Sensors

Sensors forum

LNA for Ultrasound Front end