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TIDA-01442: Is this adequate to detect a 70 MHz signal with high resolution, like 0.1 dB?

Part Number: TIDA-01442
Other Parts Discussed in Thread: ADC12DJ3200, TSW14J56EVM, TSW14J57EVM, ADC12DJ3200EVM

Hi everyone,

I am using a 70 MHz signal as the carrier of amplitude modulation for some research purpose. I want to design a receiver to detect this signal precisely and the receiver design must fulfill three requirements:

1. The 70 MHz signal is of small amplitude, < -40 dBm.

2. The receiver must have a relatively high resolution. A 0.1 dB signal difference can be detected.

3. The 70 MHz signal is coming along with some noise. So the receiver design must have high SNR.

I am new to the IC. So I prefer to get some reference design or EVB from TI. I am afraid I am not capable of designing the whole thing by myself. 

I have found a reference design named TIDA-01442. I was wondering if this design could fulfill my requirements or if there were other better choices.

Any suggestion is welcome.

Thanks so much!

Tian

  • Hi Tian,

    The ADC12DJ3200 is an excellent choice for low Gigahertz sampling, so it is very much capable of meeting the requirements you stated. As always, I would take a look at the datasheet to ensure you understand what the parts capabilities are. Please keep in mind that the TIDA-01442 requires either the TSW14J56EVM or TSW14J57EVM in order to capture data from the ADC12DJ3200EVM. Also, there are many other ADC Evaluation Modules (EVMs) that TI offers that will satisfy these requirements. If you look at this link you will be able to select an ADC based on sampling rate, bits, etc... which can help you to find a part that may be more suited to your application. Just like with the ADC12DJ3200EVM, any other ADC EVM that you use will need a capture card.

    Regards,

    Dan