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ads8568的gain drift如何降低

Other Parts Discussed in Thread: ADS8568

如题,看数据手册,ADS8568内部电压基准有10ppm的温漂。gain drift是6ppm,但是是referenced to VERFIO。那是不是说gain drift的绝对值可达16ppm?

ADC的gain drift不是一般来自于ref的温漂吗?为啥还会有额外的温漂呢?

另外,如何降低这个温漂值呢?我打算采用一个低温漂的ADR4525D作为外部参考,它的温漂是0.8ppm,这样可以减少ADS8568的温漂吗?