Dear Sir/Madam,
Our customer asked the following 2 questions to us.
As for your AD7865-1 ADC,
Q-1)
Customer put -10V DC between (VinxA+VinxB) to AGND for a few seconds.
So in this case, your AD7865-1 is broken the over voltage, correct?
Your ABS.MAX. ratings show
Analog Input Voltage to AGND
AD7865-1 (+/- 5 V Input Range)........+/- 9 V
Customer condition are,
Supply power; 5VDC
Input range; +/-5V, but shorted VinA to VinB.
Q-2)
When the supply voltage is 5VDC,
Your ABS.MAX. ratings are,
Analog Input Voltage to AGND
AD7865-1 (+/-10V Input Range)......+/-18 V
AD7865-1 (+/-5V Input Range)......+/-9 V
Why does this high voltage come?
What's the reason(mechanism)?
Our customer thought that when it is +/- 10V input range, then only use VinxA single side, correct?
Also when it is +/- 5V input range, then only use (gang VinxA+VinxB), correct?
Customer would like to know the reason why this come from?
Thanks Kaos
