47.14 ADC Electrical Specifications

Table 47-15. Single-Ended Mode ADC Electrical Specifications
AC CHARACTERISTICS			Standard Operating Conditions: VDD and VDDIO 2.7V to 5.5V (unless otherwise stated) Operating temperature: -40°C ≤ T_A ≤ +125°C for Extended Temp
Param. No.	Symbol	Characteristics	Min.	Typ.	Max.	Units	Conditions
SINGLE-ENDED MODE ADC Accuracy
SADC_13a	ENOB ⁽³⁾	Effective Number of bits	9.3	—	—	bits	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF= AVDD = 5.0V
SADC_13b			9.3	—	—	bits	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V
SADC_13c			9.3	—	—	bits	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF = VREFA = 3.0V
SADC_31a	GERR ⁽³⁾	Gain Error	-16.02	—	4.32	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 5.0V ⁽⁵⁾
SADC_31b			-16.29	—	5.46	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V ⁽⁵⁾
SADC_31c			-40.13	—	25.17	LSB	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF = VREFA = 3.0V ⁽⁶⁾
SADC_31d			-289.6	—	131.2	LSB	1 Msps, REFCTRL.REFSEL = 0x0 = INTREF AVDD = 5.0V Internal V_REF = INTREF = 4.096V ⁽⁶⁾
SADC_37a	EOFF⁽³⁾	Offset Error	-40.48	—	48.12	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 5.0V ⁽⁵⁾
SADC_37b			-38.46	—	55.04	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V ⁽⁵⁾
SADC_37c			-39.44	—	54.06	LSB	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF = VREFA = 3.0V ⁽⁶⁾
SADC_37d			-37.28	—	51.62	LSB	1 Msps, REFCTRL.REFSEL = 0x0 = INTREF AVDD = 5.0V Internal V_REF = INTREF = 4.096V ⁽⁶⁾
SINGLE-ENDED MODE ADC Dynamic Performance ^(1,2,3)
SADC_53b	SFDR	Spurious Free Dynamic Range	64	—	—	dB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V
SADC_53c	SFDR	Spurious Free Dynamic Range	62	—	—		1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF= VREFA = 3.0V
SADC_55a	THD ⁽⁴⁾	Total Harmonic Distortion	—	—	-62		1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF= AVDD = 5.0V
SADC_55b	THD ⁽⁴⁾	Total Harmonic Distortion	—	—	-62		1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V

Note:

Characterized with an analog input sine wave = (FTP(max.)/100). Example: FTP(max.) = 1 Msps/100 = 10 kHz sine wave.
Sine wave peak amplitude = 96% ADC Full Scale amplitude input with 12 bit resolution.
Spec values collected under the following additional conditions:
1. 12-bit resolution mode.
2. All registers at reset default value unless otherwise mentioned.
Value taken over 7 harmonics.
SAMPCTRL.OFFCOMP = 0, SAMPCTRL.SAMPLEN[5:0] = 3.
SAMPCTRL.OFFCOMP = 0, SAMPCTRL.REFCOMP = 0, SAMPCTRL.SAMPLEN[5:0] = 3.

Table 47-16. 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 ≤ T_A ≤ +125°C for Extended Temp
Param. No.	Symbol	Characteristics	Min.	Typ.	Max.	Units	Conditions
DIFFERENTIAL MODE ADC Accuracy
DADC_13a	ENOB (3)	Effective Number of bits	10.4	—	—	bits	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 5.0V
DADC_13c	ENOB (3)	Effective Number of bits	10.3	—	—	bits	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF= VREFA = 3.0V
DADC_19c	INL ⁽³⁾	Integral Nonlinearity	-2.3	—	2.3	LSB	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF= VREFA = 3.0V ⁽⁵⁾
DADC_31a	GERR ⁽³⁾	Gain Error	-3.49	—	5.77	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 5.0V ⁽⁴⁾
DADC_31b			-3.07	—	6.33	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V ⁽⁴⁾
DADC_31c			-31.05	—	31.35	LSB	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF = VREFA = 3.0V ⁽⁵⁾
DADC_31d			-278.25	—	132.65	LSB	1 Msps, REFCTRL.REFSEL = 0x0 = INTREF AVDD = 5.0V Internal V_REF = INTREF = 4.096V ⁽⁵⁾
DADC_37a	EOFF ⁽³⁾	Offset Error	-5.25	—	5.75	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF= AVDD = 5.0V ⁽⁴⁾
DADC_37b			-7.41	—	8.59	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V ⁽⁴⁾
DADC_37c			-7.44	—	11.36	LSB	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF= VREFA = 3.0V ⁽⁵⁾
DADC_37d			-6.14	—	7.36	LSB	1 Msps, REFCTRL.REFSEL = 0x0 = INTREF AVDD = 5.0V Internal V_REF = INTREF = 4.096V ⁽⁵⁾
DADC_43a	TUE ⁽³⁾	Total Unadjusted Error	1.7	—	4.6	LSB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 5.0V ⁽⁴⁾
DADC_43c	TUE ⁽³⁾	Total Unadjusted Error	1.9	—	11.2	LSB	1 Msps, REFCTRL.REFSEL = 0x3 = VREFA pin AVDD = 5.0V V_REF = VREFA = 3.0V ⁽⁵⁾
DIFFERENTIAL MODE ADC Dynamic Performance ^(1,2,3)
DADC_53b	SFDR	Spurious Free Dynamic Range	70	—	—	dB	1 Msps, REFCTRL.REFSEL = 0x5 = AVDD V_REF = AVDD = 3.3V
DADC_53d	SFDR	Spurious Free Dynamic Range	68	—	—	dB	1 Msps, REFCTRL.REFSEL = 0x0 = INTREF AVDD = 5.0V Internal V_REF = INTREF = 4.096V

Note:

Characterized with an analog input sine wave = (FTP (max.)/100). Example: FTP(max.) = 1 Msps/100 = 10 kHz sine wave.
Sine wave peak amplitude = 96% ADC_ Full Scale amplitude input with 12bit resolution.
Spec values collected under the following additional conditions:
1. 12-bit resolution mode.
2. All registers at reset default value unless otherwise mentioned.
SAMPCTRL.OFFCOMP = 1.
SAMPCTRL.OFFCOMP = 1 and SAMPCTRL.REFCOMP = 1.