DAC3282: DAC3282 and TRF3704 are mounted on separate boards

yoshitsugu hirata

Part Number: DAC3282

Tool/software:

The DAC3282 and TRF3704 are mounted on separate boards, and I want to put a differential amplifier on the DAC3282 side and connect it to the TRF3704 via 50 ohm coax.
(1) I need to know the best differential amplifier.
(2) I need an example of a connection circuit.
Thank you in advance!

3 months ago

0 Kang Hsia 3 months ago

TI__Guru* 78744 points

Hello,

I will direct you to our RF Amps team to best answer this question. Typically, the DAC3282 can interface directly with the TRF3704 through translation networks.

Please see below app note for detail:

https://www.ti.com/lit/an/slaa399/slaa399.pdf

-Kang

0 Hruday Kumar Mudireddy 3 months ago

TI__Expert 4510 points

Hi Hirata-San,

Since this looks like <1GHz bandwidth application RF amps are an overkill, I am assigning this thread to HS Amps team to support.

Regards,

Hruday

0 Sima Jalaleddine 3 months ago

TI__Mastermind 28915 points

Hello Hirata-San,

Two popular devices for easy connection between DAC3282 and a differential amplifier are:

These were designed to interface with a complementary-current output, digital-to-analog converter (DAC). The input stage buffers the DAC resistive termination, and converts the signal from differential to single-ended with a fixed gain of 2 V/V.

Thank you,

Sima

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DAC3282: DAC3282 and TRF3704 are mounted on separate boards