Other Parts Discussed in Thread: OPA857,
Hi Experts,
My customer had a question about OPA857-evm product.
He purchased 2 of them and it worked. However, there was a power glitch in their building and the evm stopped working.
Just curious if you could provide sometime to help debug the OPA857-evm board
The board stopped working after the power glitch. He had two board. One board: He connect JP1 to Vcc to enable TEST mode
He input 2.1VDC + 100mV AC @500KHz square wave from TEST IN
He had 3.3V DC power supply
From OUTPUTP, he didn't get any signal. The DC of OUTPUTP is 1.8V
For another board, everything is the same, but the DC of OUTPUTP is 1.14V.
Both of the board gave amplified signal from OUTPUTP before. However, they stopped working and gave no signal after the power glitch.
The power glitch might influence my DC power supply but customer is quite sure and think he used a pretty good DC power supply Agilent E3640A.
Please advise. Thank you.
Kind regards,
Gerald