BOOSTXL-PGA460: Compatible transducer

Alexandre Becker Filho

Part Number: BOOSTXL-PGA460
Other Parts Discussed in Thread: PGA460

hello,

I have this transducer www.chinalevelsensor.com/.../ and i want to know if i can connect it to the daughtercard. It needs at least 300V peak to peak.

over 5 years ago

0 Akeem Whitehead over 5 years ago

TI__Mastermind 27950 points

Hi Alex,

Yes, the TD40200D transducer is compatible with the PGA460. The transformer included with the BOOSTXL-PGA460 has a 1:1:10 turns ratio. This means when you supply the maximum allowable voltage of 15V at the center-tap of the transformer, you will generate +/-150V or 300Vpp.

0 Alexandre Becker Filho over 5 years ago in reply to Akeem Whitehead

Prodigy 220 points

Thanks for the answer. What about current? Which cautions do i need to have?

0 Akeem Whitehead over 5 years ago in reply to Alexandre Becker Filho

TI__Mastermind 27950 points

Hi Alex,

Most transducers have an equivalent resistance of 1kOhm or larger, so the current will be in the mA range.

You can use an impedance analyzer to better approximate the equivalent circuit of your transducer if this information is not provided in the transducer datasheet. The "PGA460 Ultrasonic Module Hardware and Software Optimization" ( http://www.ti.com/lit/an/slaa732/slaa732.pdf ) app report describes using an impedance analyzer for this purpose.

Sensors

Sensors forum

BOOSTXL-PGA460: Compatible transducer