56.16 ADC Electrical Specifications

Table 56-18. ADC Single Ended Mode Electrical Specifications
AC CHARACTERISTICS Standard Operating Conditions: VDD = AVDD = 1.71V to 3.63V (unless otherwise stated)

Operating temperature:

-40°C ≤ TA ≤ +125°C for Extended Temperature

Param. No. Symbol Characteristics Min. Typ. Max. Units Conditions
SINGLE ENDED MODE ADC Accuracy (3)
SADC_19 INL Integral Nonlinearity -3.3 3.3 LSB 1Msps, Internal VREF=AVDD=VDD=3.3V
SADC_21 -5.1 5.1 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V

SADC_27 DNL Differential Nonlinearity -1 1.5 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V

SADC_37 EOFF Offset Error -26.1 11.6 LSB 1Msps, Internal VREF=AVDD=VDD=3.3V,

SAMPCTRL.OFFCOMP=1

-35.9 29 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V,

SAMPCTRL.OFFCOMP=1

SADC_43 TUE Total Unadjusted Error -21 21 LSB 1Msps, Internal VREF=AVDD=VDD=3.3v,

REFCTRL.REFCOMP=1,

SAMPCTRL.OFFCOMP=1

SADC_47 -19.7 19.7 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V,

REFCTRL.REFCOMP=1,

SAMPCTRL.OFFCOMP=1

SINGLE ENDED MODE ADC Dynamic Performance (3)
SADC_49 SINAD (1,2) Signal to Noise and Distortion 55.6 dB VREF=AVDD=VDD=3.3V at 12bit max sampling rate
SADC_57 Nrms Noise RMS 3 LSB VREF = AVDD = VDD = 3.3V,

Constant Input Voltage

4 LSB External VREF = 2.4V, AVDD = VDD = 3.3V,

Constant Input Voltage

Note:
  1. Characterized with an analog input sine wave = (FTP(max) / 100). Example: FTP(max)=1Msps/100 = 10kHz sine wave.
  2. Sinewave peak amplitude = 96% ADC_ Full Scale amplitude input with 12bit resolution.
  3. ADC is configured in 12bits mode, All registers are at the reset default value unless otherwise stated.
Table 56-19. ADC Differential Mode Electrical Specifications
AC CHARACTERISTICS Standard Operating Conditions: VDD = AVDD = 1.71V to 3.63V (unless otherwise stated)

Operating temperature :

-40°C ≤ TA ≤ +125°C for Extended Temperature

Param. No. Symbol Characteristics Min. Typ. Max. Units Conditions
DIFFERENTIAL MODE ADC Accuracy (1)
DADC_19 INL Integral Nonlinearity -1.8 1.8 LSB 1Msps, Internal

VREF=AVDD=VDD=3.3V

DADC_21 -1.9 1.9 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V

DADC_27 DNL Differential Nonlinearity -1 1.2 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V

DADC_31 GERR Gain Error -8.6 8.2 LSB 1Msps, Internal

VREF=AVDD=VDD=3.3V,

REFCTRL.REFCOMP=1

-5.4 8.6 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V,

REFCTRL.REFCOMP=1

-12.3 8.2 LSB 1Msps, Internal

VREF=AVDD=VDD=3.3V,

REFCTRL.REFCOMP=0

-38.5 29.1 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V,

REFCTRL.REFCOMP=0

DADC_37 EOFF Offset Error -4.5 3.9 LSB 1Msps, Internal

VREF=AVDD=VDD=3.3V,

SAMPCTRL.OFFCOMP=1

-5.7 4.6 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V,

SAMPCTRL.OFFCOMP=1

-15.3 15.3 LSB 1Msps, Internal

VREF=AVDD=VDD=3.3V,

SAMPCTRL.OFFCOMP=0

-20.9 21.2 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V,

SAMPCTRL.OFFCOMP=0

DADC_45 TUE Total Unadjusted Error -5.8 5.8 LSB 1Msps, External VREF=2.4V,

AVDD=VDD=3.3V,

REFCTRL.REFCOMP=1,

SAMPCTRL.OFFCOMP=1

Note:
  1. ADC is configured in 12bits mode, All registers are at the reset default value unless otherwise stated.
Table 56-20. ADC Conversion Electrical Requirements (2)
AC CHARACTERISTICS Standard Operating Conditions: VDD = AVDD = 1.71V to 3.63V (unless otherwise stated)

Operating temperature:

-40°C ≤ TA ≤ +15°C for Extended Temperature

Param. No. Symbol Characteristics Min. Typ. Max. Units Conditions
ADC_ Clock Requirements
ADC_57 TAD ADC Clock Period 62.5 3125 ns
ADC_58 fGCLK_ADCx ADCx Module GCLK max input freq FCLK_51 MHz FCLK_51: Refer to Maximum Clock Frequencies Electrical Specifications
ADC Single-Ended Throughput Rates
ADC_59 FTPR (1) (Single-Ended Mode) Throughput Rate

(Single-Ended)

24.62 1231 ksps 12-bit resolution,

Rsource ≤ 147 Ω,

SAMPCTRL.OFFCOMP=0,

SAMPCTRL.SAMPLEN=0

26.67 1333 10-bit resolution,

Rsource ≤ 504 Ω,

SAMPCTRL.OFFCOMP=0,

SAMPCTRL.SAMPLEN=0

32 1600 8-bit resolution,

Rsource ≤ 1,000 Ω,

SAMPCTRL.OFFCOMP=0,

SAMPCTRL.SAMPLEN=0

20 1000 ksps 12-bit resolution,

Rsource ≤ 6,560 Ω

SAMPCTRL.OFFCOMP=1,

SAMPCTRL.SAMPLEN=n/a

21.30 1067 10-bit resolution,

Rsource ≤ 8,000 Ω

SAMPCTRL.OFFCOMP=1,

SAMPCTRL.SAMPLEN=n/a

24.62 1231 8-bit resolution,

Rsource ≤ 9,984 Ω

SAMPCTRL.OFFCOMP=1,

SAMPCTRL.SAMPLEN=n/a

ADC Differential Mode Throughput Rates
ADC_61 FTPR (1)

(Differential Mode)

Throughput Rate

(Differential Mode)

24.62 1231 ksps 12-bit resolution,

Rsource ≤ 147 Ω,

SAMPCTRL.OFFCOMP=0,

SAMPCTRL.SAMPLEN=0

29.09 1455 10-bit resolution,

Rsource ≤ 504 Ω,

SAMPCTRL.OFFCOMP=0,

SAMPCTRL.SAMPLEN=0

35.56 1778 8-bit resolution,

Rsource ≤ 1,000 Ω,

SAMPCTRL.OFFCOMP=0,

SAMPCTRL.SAMPLEN=0

20 1000 ksps 12-bit resolution,

Rsource ≤ 6,560 Ω

SAMPCTRL.OFFCOMP=1,

SAMPCTRL.SAMPLEN=n/a

22.86 1143 10-bit resolution,

Rsource ≤ 8,000 Ω

SAMPCTRL.OFFCOMP=1,

SAMPCTRL.SAMPLEN=n/a

26.67 1333 8-bit resolution,

Rsource ≤ 9,984 Ω

SAMPCTRL.OFFCOMP=1,

SAMPCTRL.SAMPLEN=n/a

Note:
  1. ADC Throughput Rate FTP = ((1 / ((TSAMP + TCNV) * TAD)) / (# of user active analog inputs in use on specific target ADC module)).
    Note: Specification values assume only one AINx channel in use.
  2. These values are based on simulation, and not covered by production test limits or characterization.