44.15 Sigma Delta Analog-to-Digital Converter (SDADC)

Table 44-17. Differential Mode ADC Electrical Specifications
AC CHARACTERISTICS Standard Operating Conditions: VDD and VDDIO 2.7V to 5.5V (unless otherwise stated)

Operating temperature -40°C ≤ TA ≤ +125°C for Extended Temp
Param. No. Symbol Characteristics Min. Typical Max. Units Conditions
DIFFERENTIAL MODE ADC Accuracy
DSDADC_31 GERR (1,2) Gain Error -909 — 476 LSb FTP(max), REFCTRL.REFSEL = 0x3 = VDDANA

VREF = VDDANA = 5.0V
DSDADC_37 EOFF (1,2) Offset Error -229 — 169 LSb FTP(max), REFCTRL.REFSEL = 0x3 = VDDANA

VREF = VDDANA = 5.0V
Note:
  1. Spec values collected under the following additional conditions:
    • All registers at reset default value otherwise not mentioned
  2. Differential input mode, OSR = 256, SDADC Clock Period = 166.7ns (6 MHz), Chopper OFF (ANACTRL.ONCHOP = 0), REFRANGE[1:0] = 0x3.