TIDA-01022: why TIDA-01022 limites the input to 1.9GHz

Michael Ma @g

Intellectual 520 points

Part Number: TIDA-01022
Other Parts Discussed in Thread: LMH5401, LMH6401

5G New Radio has input up to sub-6GHz. TIDA-01022 has the XLF-192+ in the RF path to filter out anything above 1.9GHz.

over 6 years ago

0 Michael Ma @g over 6 years ago

Intellectual 520 points

0 Anbu Mani over 6 years ago in reply to Michael Ma @g

TI__Expert 4110 points

Hi Michael Ma,

The XLF-192+ (1.9 GHz) reflection-less filter is used at the output of Amplifier path, here (LMH5401+ LMH6401 + LPF 1.5 GHz) limits input bandwidth. TIDA-01022 also has an option for transformer coupled inputs which supports up to 6GHz.

0 Michael Ma @g over 6 years ago in reply to Anbu Mani

Intellectual 520 points

why use 2 resisters (R648, R649) to short the F_IN1P and F_OUT1P?

0 Anbu Mani over 6 years ago in reply to Michael Ma @g

TI__Expert 4110 points

Hi Michael,

Sorry for late reply , i was missed this thread.

Resistor R648 and R649 has share pad with R646 and R647 respectively which helps to by pass reflection less filer if needed. please find the PCB layout routing for better understanding.

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TIDA-01022: why TIDA-01022 limites the input to 1.9GHz