[9] SAADC: Reduced SFDR

nRF9161 Revision 1 Errata

This anomaly applies to Revision 1, build codes LACA-A0A.

It was inherited from the previous IC revision Engineering A.

Symptoms

Reduced SFDR on SAADC.

Conditions

DC/DC refresh mode.

Consequences

Typical SFDR reduced to 60 dBc in DC/DC refresh mode.

Workaround

Set register as below. For secure mode: 
 
*((volatile uint32_t *)0x50004A38) = 0;
For non-secure mode: 
 
*((volatile uint32_t *)0x40004A38) = 0;