ADC

Operating conditions:

Table 1. Power Supply, Reference, and Input Range
Symbol	Description	Conditions	Min.	Typ.	Max.	Unit
V_DD	Supply Voltage		1.8	-	5.5	V
V_REF	Reference Voltage	REFSEL = Internal reference	0.55	-	V_DD-0.5V	V
		REFSEL = V_DD	1.8	-	5.5
		REFSEL = External reference	1.1	-	V_DD
R_IN	Input resistance		-	TBD	-	kΩ
C_IN	Input capacitance	SAMPCAP=5pF	-	5	-	pF
C_IN	Input capacitance	SAMPCAP=10pF	-	10	-	pF
V_IN	Input Voltage Range		0	-	V_REF	V
I_BAND	Input Bandwidth	1.1V≤V_REF	-	-	57.5	kHz

Table 2. Clock and Timing Characteristics
Symbol	Description	Conditions	Min.	Typ.	Max.	Unit
R_S	Sample Rate	1.1V≤V_REF	15	-	115	ksps
		1.1V≤V_REF (8 bit resolution)	15	-	150
		V_REF=0.55V (10 bit)	7.5	-	20
f_{CLK_ADC}	ADC clock frequency	V_REF=0.55V (10 bit)	100	-	260	kHz
		1.1V≤V_REF (10 bit)	200	-	1500
		1.1V≤V_REF (8 bit resolution)	200	-	2000
Ts	Sampling time		2	2	33	CLK_ADC cycles
T_CONV	Conversion time (latency)	Sampling time = 2CLK_ADC	8.7	-	50	µs
T_START	Startup-time	Internal Vref used	-	22	-	µs

Table 3. Accuracy Characteristics
Symbol	Description	Conditions		Min.	Typ.	Max.	Unit
Res	Resolution			-	10	-	bit
INL	Integral Non Linearity	REFSEL = Internal reference or V_DD	0.55V≤V_REF≤Vdd f_ADC=15ksps	-	1.0	-	LSB
			1.1V≤V_REF≤2.5 f_ADC=115ksps	-	1.0	-
			2.5V<V_REF≤Vdd f_ADC=115ksps	-	1.3	-
		REFSEL = External reference	V_REF= 1.8V f_ADC=15ksps	-	0.9	-
			V_REF= 4.096V f_ADC=15ksps	-	0.9	-
			V_REF= 1.8V f_ADC=115ksps	-	1.0	-
			V_REF= 4.096V f_ADC=115ksps	-	1.3	-
DNL⁽¹⁾	Dynamic Non Linearity	REFSEL = Internal reference or V_DD	V_REF=0.55V f_ADC=15ksps	-	0.4	-	LSB
			1.1V≤V_REF≤Vdd f_ADC=15ksps	-	0.3	-
			1.1V≤V_REF≤2.5V f_ADC=115ksps	-	0.4	-
			2.5V≤V_REF≤Vdd f_ADC=115ksps	-	0.7	-
		REFSEL = External reference	V_REF= 1.8V f_ADC=15ksps	-	0.2	-
			V_REF= 4.096V f_ADC=15ksps	-	0.2	-
			V_REF= 1.8V f_ADC=115ksps	-	0.4	-
			V_REF= 4.096V f_ADC=115ksps	-	0.6	-
EABS	Absolute Accuracy	REFSEL = Internal reference or V_DD	0.55V≤V_REF ≤1.1V f_ADC=15ksps	-	3	-	LSB
			V_REF = 1.1V f_ADC≤115ksps	-	3	-
			1.5V≤V_REF ≤4.3V f_ADC≤115ksps	-	2.5	-
			V_REF=V_DD f_ADC≤115ksps	-	2	-
		REFSEL = External reference	f_ADC ≤115ksps	-	2	-
EGAIN	Gain Error	REFSEL = Internal reference or V_DD	V_REF=1.1V f_ADC = 115ksps	-	2±2.5	-	LSB
		REFSEL = Internal reference or V_DD	V_REF=V_DD f_ADC = 115ksps	-	2	-
		REFSEL = External reference	V_REF=1.8V f_ADC ≤ 115ksps	-	1.2	-
		REFSEL = External reference	V_REF=4.096V f_ADC ≤ 115ksps	-	1.0	-
EOFF	Offset Error	REFSEL = Internal reference or V_DD		-	-0.5	-	LSB
EOFF	Offset Error	REFSEL = External reference		-	-0.4	-	LSB

Note:

A DNL error of less than or equal to 1LSB guarantees a monotonic transfer function with no missing codes.