JAJSD74E February 2016 – August 2022 ADS8681 , ADS8685 , ADS8689
PRODUCTION DATA
The device can operate with either an internal voltage reference or an external voltage reference using the internal buffer. The internal or external reference selection is determined by programming the INTREF_DIS bit of the RANGE_SEL_REG register. The internal reference source is enabled (INTREF_DIS = 0) by default after reset or when the device powers up. The INTREF_DIS bit must be programmed to logic 1 to disable the internal reference source whenever an external reference source is used.