49.19 ADC Electrical Specifications

Table 49-22. ADC AC Electrical Specifications
AC CharacteristicsStandard Operating Conditions: VDD33 = VDDIO = AVDD = 1.9–3.6V (Unless Otherwise Stated)

Operating Temperature:

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

Parameter NumberSymbolCharacteristicsMin.TypMax.UnitsConditions
Device Supply
ADC_1AVDDADC Core SupplyAVDD(minimum)AVDD(maximum)V
Reference Inputs
ADC_3VREFADC Reference VoltageAVDDVInternal Reference
Analog Input Range
ADC_7AFSFull-Scale Analog Input Signal RangeAVSSVREFVSingle-Ended Mode
Table 49-23. Single-Ended Mode ADC AC Electrical Specifications (Dedicated Core - ADC0)
AC CharacteristicsStandard Operating Conditions: VDD33 = VDDIO = AVDD = 1.9–3.6V (Unless Otherwise Stated)

Operating Temperature:

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

Parameter NumberSymbolCharacteristicsMin.TypMax.UnitsConditions
Single-Ended Mode ADC Accuracy
SADC_11ResResolution612bitsSelectable 6, 8, 10, 12-bit Resolution Ranges
SADC_13ENOB(1, 2)Effective Number of bits1010.4 10.8bits1 MSPS, 12-bit Resolution mode VREF = AVDD = VDDIO = 3.3V
SADC_19INLIntegral Nonlinearity-1.6/+1.3LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
SADC_25DNLDifferential Nonlinearity-1.0/+1.9LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
SADC_31GERRGain Error-0.8LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
SADC_37EOFFOffset Error0.1LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
Single-Ended Mode ADC Dynamic Performance
SADC_49SINADSignal to Noise and Distortion6264dBVREF = AVDD = VDDIO = 3.3V at 12-bit maximum sampling rate
SADC_51SNRSignal to Noise ratio62
SADC_53SFDRSpurious Free Dynamic Range6568
SADC_55THD(3)Total Harmonic Distortion-83-78
Note:
  1. Characterized with an Analog Input Sine Wave = FTP(maximum)100. For example, FTP(maximum)=1MSPS100=10kHzsinewave.
  2. Sine wave peak amplitude = 96% ADC_ Full Scale amplitude input with 12-bit resolution.
  3. Values taken over 7 harmonics.
  4. ADC is configured in 12 bits mode, All registers are at the reset default value unless otherwise stated.
Table 49-24. Single-Ended Mode ADC AC Electrical Specifications (Shared Core - ADC-SHR)
AC CharacteristicsStandard Operating Conditions: VDD33 = VDDIO = AVDD = 1.9–3.6V (Unless Otherwise Stated)

Operating Temperature:

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

Parameter NumberSymbolCharacteristicsMin.TypMax.UnitsConditions
Single-Ended Mode ADC Accuracy
SADC_11ResResolution612bitsSelectable 6, 8, 10 and 12-bit Resolution Ranges
SADC_13ENOB(1, 2)Effective Number of bits10.911.1bits1 MSPS, 12-bit Resolution mode VREF = AVDD = VDDIO = 3.3V
SADC_19INLIntegral Nonlinearity-1.2/+0.9LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
SADC_25DNLDifferential Nonlinearity-1.0/+1.2LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
SADC_31GERRGain Error -1.2LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
SADC_37EOFFOffset Error2.6LSB1 MSPS, VREF = AVDD = VDDIO = 3.3V
Single-Ended Mode ADC Dynamic Performance
SADC_49SINADSignal to Noise and Distortion6769dBVREF = AVDD = VDDIO = 3.3V at 12-bit maximum sampling rate
SADC_51SNRSignal to Noise ratio67
SADC_53SFDRSpurious Free Dynamic Range 7882
SADC_55THD(3)Total Harmonic Distortion-85-78
Note:
  1. Characterized with an Analog Input Sine Wave = FTP(maximum)100. For example, FTP(maximum)=1MSPS100=10kHzsinewave.
  2. Sine wave peak amplitude = 96% ADC_ Full Scale amplitude input with 12-bit resolution.
  3. Values taken over 7 harmonics.
  4. ADC is configured in 12 bits mode, All registers are at the reset default value unless otherwise stated.
Table 49-25. ADC Conversion and Sample AC Electrical Requirements
AC CharacteristicsStandard Operating Conditions: VDD33 = VDDIO = AVDD = 1.9–3.6V (Unless Otherwise Stated)

Operating Temperature:

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

Parameter NumberSymbolCharacteristicsMin.TypMax.UnitsConditions
ADC Clock Requirements
ADC_57TQADC Controller Clock Period1/fADC_TQns
ADC_57aTADADC Core Clock Period1/fADC_TAD1/fADC_TADns
ADC_58fADC_TQADC Controller Clock freqFCLK_51MHz
ADC_58afADC_TADADC Core Clock Frequency0.1432MHz
ADC Single-Ended Throughput Rates
ADC_59FTP (1) (Single-Ended Mode)ADC0-Throughput Rate (Sampling rate) (Single-Ended)1MSPS12-bit resolution, Rsource Impedance ≤ 50Ω, SAMC = 1
ADC-SHR -Throughput Rate (Sampling rate) (Single-Ended)112-bit resolution, Rsource Impedance ≤ 50Ω, SAMC = 1
ADC Conversion and Sample time
ADC_63TSAMPADC Sample Time (ADC0)3.5TAD12-bit TAD(minimum), External Analog Input Rsource ≤ 200 Ω, Max ADC Clock, SAMC = 1
ADC Sample Time (ADC-SHR)3.512-bit TAD(min), External Analog Input Rsource ≤ 200 Ω, Max ADC Clock
ADC Sample Time (ADC-SHR with ADCCON1.CVDEN bit = 1)10.512-bit TAD(minimum), Ext Analog Input Rsource ≤ 200 Ω, ADCCON2.CVDCPL[2:0] = 111
ADC_65TCNVConversion Time (Single-Ended Mode)12.5TAD12-bit resolution
10.510-bit resolution
8.58-bit resolution
6.56-bit resolution
Note:
  1. ADC Throughput Rate FTP = ((1/((TSAMP + TCNV) × TAD))/(# of user active analog inputs in use on specific target ADC core)). Specification values assume only one AINx channel in use.