SAM L21

46.10.6 Digital to Analog Converter (DAC) Characteristics

Table 46-26. Operating Conditions⁽¹⁾
Symbol	Parameters	Conditions	Min.	Typ.	Max.	Unit
Res	Resolution	-	-	-	12	bits
clk	Internal DAC Clock frequency	-	-	-	12	MHz
fs_dac	Sampling frequency	clk/12, CCTRL=0x0 (Low Power)	-	-	10	ksps
fs_dac	Sampling frequency	clk/12, CCTRL=0x2 (High Power)	-	-	1	Msps
V_OUTmin	Min Output Voltage	-	-	-	0.15	V
V_OUTmax	Max Output Voltage	-	V_DDANA-0.15	-	-	V
V_REF	Reference input	CTRLB.REFSEL[1:0]=0x2 (VREFAB)	1	-	V_DDANA-0.15	V
V_REF	Reference input	CTRLB.REFSEL[1:0]=0x0 (VREFAU)	1	-	V_DDANA	V
C_VREF	External decoupling capacitor	-	-	220	-	nF
C_LOAD	Output capacitor load	-	-	-	50	pF
R_LOAD	Output resistance load	-	5	-	-	kΩ
t_s	Settling time	For reaching +/-1LSB of the final value. Step size < 500 LSB - C_load = 50pF	-	-	1	µs
t_{s_FS}	Settling time 0x080 to 0xF7F	For reaching +/-1LSB of the final value. Step size from 0% to 100% - C_load = 50pF	-	5	7	µs

Note:

These values are based on simulation. They are not covered by production test limits or characterization.

Table 46-27. Differential Mode⁽¹⁾
Symbol	Parameters	Conditions	Min.	Typ.	Max.	Unit
INL	Integral Non Linearity, Best-fit curve from 0x080 to 0xF7F	clk=12MHz, V_DDANA=3.0V, External Ref.=2.0V, C_Load=50pF	-	+/-2.5	+/-3.5	LSB
INL	Integral Non Linearity, Best-fit curve from 0x080 to 0xF7F	clk=12MHz, V_DDANA=2.0V, internal V_DDANA=2.0V, C_Load=50pF	-	+/-2.2	+/-3.0	LSB
DNL	Differential Non Linearity, Best-fit curve from 0x080 to 0xF7F	clk=12MHz, V_DDANA=3.0V, External Ref.=2.0V, C_Load=50pF	-	+/-2.0	+/-2.5	LSB
DNL		clk=12MHz, V_DDANA=2.0V, internal V_DDANA=2.0V, C_Load=50pF	-	+/-1.5	+/-2.5	LSB
Gerr	Gain Error	External Reference voltage	-	+/-0.3	+/-0.8	% FSR
		Internal V_DDANA Reference	-	+/-0.2	+/-0.5
		1.0V Internal Reference voltage	-	+/-1	+/-3.0
Offerr	Offset Error	External Reference voltage	-	+/-5.0	+/-10.0	mV
		Internal V_DDANA Reference	-	+/-4.0	+/-10.0
		1.0V Internal Reference voltage	-	+/-10.0	+/-30.0
TC_g	Gain Drift		-20	-	20	ppm/°C
TC_o	Offset Drift		-0.05	-0.01	0.05	mV/°C
ENOB	Effective Number Of Bits	Fs=1Ms/s - External Ref - High Power	9.5	10.1	10.7	Bits
SNR	Signal to Noise ratio		58.0	67.0	71.0	dB
THD	Total Harmonic Distortion		-71.0	-64.0	-59.0	dB

Note:

These values are based on characterization.

Table 46-28. Single-Ended Mode⁽¹⁾
Symbol	Parameters	Conditions	Min.	Typ.	Max.	Unit
INL	Integral Non Linearity, Best-fit curve from 0x080 to 0xF7F	clk=12MHz, V_DDANA=3.0V, External Ref.=2.0V, C_Load=50pF	-	+/-3	+/-4.5	LSB
INL	Integral Non Linearity, Best-fit curve from 0x080 to 0xF7F	clk=12MHz, V_DDANA=2.0V, internal V_DDANA=2.0V, C_Load=50pF	-	+/-2.5	+/-3.5	LSB
DNL⁽¹⁾	Differential Non Linearity, Best-fit curve from 0x080 to 0xF7F	clk=12MHz, V_DDANA=3.0V, External Ref.=2.0V, C_Load=50pF	-	+/-3.0	+/-4.0	LSB
DNL⁽¹⁾		clk=12MHz, V_DDANA=2.0V, internal V_DDANA=2.0V, C_Load=50pF	-	+/-2.5	+/-3.5	LSB
Gerr	Gain Error	External Reference voltage	-	+/-0.3	+/-0.8	% FSR
		Internal V_DDANA Reference	-	+/-0.2	+/-0.5
		1.0V Internal Reference voltage	-	+/-0.1	+/-3.0
Offerr	Offset Error	External Reference voltage	-	+/-5.0	+/-10.0	mV
		Internal V_DDANA Reference	-	+/-7.0	+/-10.0
		1.0V Internal Reference voltage	-	+/-10.0	+/-12.0
TC_g	Gain Drift		-20	-	20	ppm/°C
TC_o	Offset Drift		-0.03	-0.05	0.02	mV/°C
ENOB	Effective Number Of Bits	Fs=1Ms/s - External Ref - High Power	9.0	10.0	10.3	Bits
SNR	Signal to Noise ratio		56.0	67.0	68.5	dB
THD	Total Harmonic Distortion		-69.0	-65.0	-55.0	dB

Note:

These values are based on characterization.

Table 46-29. Power Consumption⁽¹⁾
Symbol	Parameters	Conditions	Ta	Min.	Typ.	Max.	Unit
I_DDANA	Differential Mode, DC supply current, 2 output channels - without load	fs=1Msps, CCTRL=0x2, V_REF>2.4V, V_CC=3.3V	Max.85°C Typ.25°C	-	401	587	µA
I_DDANA		fs=10ksps, CCTRL=0x0, V_REF<2.4V, V_CC=3.3V		-	84	174	µA
I_DDANA	Single-Ended Mode, DC supply current, 2 output channels - without load	fs=1Msps, CCTRL=0x2, V_REF>2.4V, V_CC=3.3V		-	297	395	µA
I_DDANA		fs=10ksps, CCTRL=0x0, V_REF<2.4V, V_CC=3.3V		-	53	112	µA

Note: 1.These values are based on characterization.

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