39.17 AC

Table 39-23. Analog Comparator Specifications
Operating Conditions: V_DD = 3.0V V_ACCREF = V_DD T_A = 25°C
Symbol	Description	Min.	Typ.✝	Max.	Unit	Conditions
V_IN*	Input voltage range	-0.2	—	V_DD	V
I_L	Input leakage current	—	5	—	nA
V_OFF	Input offset voltage	-11	±5	11	mV	0.7V < V_IN < (V_DD - 0.7V)
V_OFF	Input offset voltage	-15	±5	15	mV	0.1V < V_IN < (V_DD - 0.1V)
CMRR	Common mode input rejection ratio	—	70	—	dB	0.1V < V_IN < (V_DD - 0.1V)
V_HYST	Hysteresis	—	10	—	mV	CTRLA.HYSMODE = `0x1`
		—	25	—		CTRLA.HYSMODE = `0x2`
		—	50	—		CTRLA.HYSMODE = `0x3`
t_RESP*	Response time, rising edge	—	85	120	ns	CTRLA.POWER = `0x0`, V_CM = V_DD/2
	Response time, falling edge	—	85	120	ns	CTRLA.POWER = `0x0`, V_CM = V_DD/2
	Response time, rising edge	—	250	350	ns	CTRLA.POWER = `0x1`, V_CM = V_DD/2
	Response time, falling edge	—	220	300	ns	CTRLA.POWER = `0x1`, V_CM = V_DD/2
	Response time, rising edge	—	460	680	ns	CTRLA.POWER = `0x2`, V_CM = V_DD/2
	Response time, falling edge	—	430	550	ns	CTRLA.POWER = `0x2`, V_CM = V_DD/2
t_DACREF⁽¹⁾	AC DACREF initialization time	—	25	—	µs
✝ Data found in the “Typ.” column is at T_A = 25°C and V_DD = 3.0V unless otherwise specified. These parameters are for design guidance only and are not tested. * These parameters are characterized but not tested in production. Note: When DACREF is used with an internal reference, the settling time might be longer depending on whether the bandgap reference is initially running or not. The number given assumes the bandgap reference is initially running. See the VREF section for VREF start-up time.