Other Parts Discussed in Thread: TUSS4440, TUSS4470
Tool/software:
We adapt TDC1000-TIDA00322EVM’s circuit and plan to use an ultrasonic air-coupled sensor to measure the air distance of an object ( ex: metal plate、water …. ) .
The operation frequency of air sensor : 250 KHz
The air distance to the target object : 30~40 cm
we preliminarily evaluate the power gain of the RX path and find that it needs about 60~ 70 dB for the detected distance . however the RX power gain of the TDC1000 is totally 41 dB max.
How to add an extra LNA or OP amplifier to increase the RX GAIN ? Which LNA part number may you recommend ? and the reference circuit design of the extra LNA ??
Thanks for your kind help~
