PIC32CX SG41/SG60/SG61 Family Data Sheet

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 ≤ T_A ≤ +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	INL	Integral Nonlinearity	-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
SADC_37	EOFF	Offset Error	-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	TUE	Total Unadjusted Error	-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
SADC_57	Nrms	Noise RMS	—	—	4	LSB	External VREF = 2.4V, AVDD = VDD = 3.3V, Constant Input Voltage
Note: Characterized with an analog input sine wave = (FTP(max) / 100). Example: FTP(max)=1Msps/100 = 10kHz sine wave. Sinewave peak amplitude = 96% ADC_ Full Scale amplitude input with 12bit resolution. 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 ≤ T_A ≤ +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	INL	Integral Nonlinearity	-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: 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 ≤ T_A ≤ +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: 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. These values are based on simulation, and not covered by production test limits or characterization.

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