LMX2492EVM: operate with 5V?

Wolfgang Kemptner

Prodigy 40 points

Part Number: LMX2492EVM
Other Parts Discussed in Thread: LMX2492, LMX2595

Is there a way to operate the LMX2492EVM with 5V?

thx in advance

over 5 years ago

0 Vibhu Vanjari over 5 years ago

TI__Genius 11900 points

Hello Wolfgang,

"Apply 5-V to Vcc_5V SMA connector. The on-board VCO and the optional op-amp require 5-V supply while the on-board XO and LMX2492 need 3.3-V supply. The on-board LDO regulates 5-V down to 3.3-V. Never apply more than 6-V to Vcc_5V SMA connector or otherwise the LDO will be damaged. The total current consumption of the board is about 240 mA."

From LMX2492EVM User' Guide (https://www.ti.com/lit/ug/snau160e/snau160e.pdf) section "2.2 Power Supply".

Thanks,

Vibhu

0 Wolfgang Kemptner1 over 5 years ago

Prodigy 20 points

sorry .. I meant to ask about the LMX2595 EVM. Can I operate with it 5-V by connecting + to Vtune-TP and - to GND-TP, forgetting about the Vcc SMA-Input, and limiting the current myself? Is this correct?

best /wk

0 Vibhu Vanjari over 5 years ago in reply to Wolfgang Kemptner1

TI__Genius 11900 points

Hello Wolfgang,

You cannot do this. A 3.3V Vcc must be supplied to the device.

Thanks,

Vibhu

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LMX2492EVM: operate with 5V?