1. We have a system where AD7836 DAC is driven by an FPGA. FPGA provides Data and Commands to AD7836.
2. If FPGA is powered and provides Data and Control but AD7836 is not powered, will it cause damage to AD7836
3. In the same system we have ADC AD7865…
Our customer asked the following 2 questions to us.
As for your AD7865-1 ADC,
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?
西安 高新区 电力拖动 关注AD7865
It was only the AVDD supply of the AD7865 that was at the lower limit, this was due to the 1st order RC filter. The rest of the analogue signal chain had a 5V +/-20mV supply.
It looks like some PCB issues have caused the problem with the AD7865…
Dear Sir, I'm using a AD7865-2, have some problem convertion results. There is a simple Low pass filter on the Vin of AD7865-2. But Resistor value is Zero ohm, and Capacitor is 0.01uF. In this case, the conversion result is good. But in case of that…
在AD7865的DATASHEET的引脚 /H / S SEL功能说明中有：When this pin is at a Logic 0，the AD7865 conversion
sequence selection is controlled via the SL1–SL4 input pins and runs off an internal clock.
Dear Madam / Sir,
Kindly clarify the following points:
1. AD7836 requires 5-V for logic circuit and +/- 15-V and Vref+ and Vref- for the analog section.
Is there any powering sequence for these voltages or can we power up simultaneously.
第二次采购回来的是 AD7865asz-2. 通过数据手册查看到二者没有区别，但是在使用中对于同样的