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The Drive of ADS1220

Posted: Thu May 18, 2017 1:06 pm
by johnwalker
The device supports measurements of pseudo- or fully-differential signals when using the PGA. Alternatively, the device can be configured to bypass the internal PGA while still providing high input impedance and gains up to 4 V/V, allowing for single-ended measurements.
At present, The MCU I used is freescale ZVH128 while spi is used to drive ADS1220. The buad rate of spi I set is 1M. The SPI outputted signal is normal as well as the SCK signal when I observe it by oscilloscope. But The return signal of ADS1220 can’t be read out. What troubles occurred? I have review it and read its data-sheet several times. I don’t know how to solve it.
Could anyone here help me? Thanks a million.

I didn't find the right solution from the Internet.

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