Errata nRF9160 - SAADC: Reduced SFDR

This anomaly applies to IC Rev. Engineering A, build codes SICA-BAA.

Symptoms

Reduced SFDR on SAADC.

DC/DC refresh mode used.

SFDR reduced to 60 dBc.

Set registers as below before use of SAADC. For secure mode:

 
*((volatile uint32_t *)0x50004A38) = 1;

For non-secure mode:

 
*((volatile uint32_t *)0x40004A38) = 1;

Note: Consequence is 7-10 mA increased current consumption. The consequence of this item will be fixed on the production version of nRF9160-SICA.