Silicon Laboratories C8051F340, C8051F347, C8051F346 Comparator Electrical Characteristics

C8051F340/1/2/3/4/5/6/7

Table 7.1. Comparator Electrical Characteristics

VDD = 3.0 V, –40 to +85 °C unless otherwise noted.

All specifications apply to both Comparator0 and Comparator1 unless otherwise noted.

Parameter	Conditions	Min	Typ	Max	Units
Response Time:	CP0+ – CP0– = 100 mV		100		ns
Mode 0, Vcm* = 1.5 V
	CP0+ – CP0– = –100 mV		250		ns
Response Time:	CP0+ – CP0– = 100 mV		175		ns
Mode 1, Vcm* = 1.5 V
	CP0+ – CP0– = –100 mV		500		ns
Response Time:	CP0+ – CP0– = 100 mV		320		ns
Mode 2, Vcm* = 1.5 V
	CP0+ – CP0– = –100 mV		1100		ns
Response Time:	CP0+ – CP0– = 100 mV		1050		ns
Mode 3, Vcm* = 1.5 V
	CP0+ – CP0– = –100 mV		5200		ns
Common-Mode Rejection			1.5	4	mV/V
Ratio
Positive Hysteresis 1	CP0HYP1–0 = 00		0	1	mV
Positive Hysteresis 2	CP0HYP1–0 = 01	2	5	10	mV
Positive Hysteresis 3	CP0HYP1–0 = 10	7	10	20	mV
Positive Hysteresis 4	CP0HYP1–0 = 11	15	20	30	mV
Negative Hysteresis 1	CP0HYN1–0 = 00		0	1	mV
Negative Hysteresis 2	CP0HYN1–0 = 01	2	5	10	mV
Negative Hysteresis 3	CP0HYN1–0 = 10	7	10	20	mV
Negative Hysteresis 4	CP0HYN1–0 = 11	15	20	30	mV
Inverting or Non-Inverting		–0.25		VDD + 0.25	V
Input Voltage Range
Input Capacitance			3		pF
Input Bias Current			0.001		nA
Input Offset Voltage		–5		+5	mV
	Power Supply
Power Supply Rejection			0.1		mV/V
Power-up Time			10		µs
	Mode 0		7.6		µA
Supply Current at DC	Mode 1		3.2		µA
	Mode 2		1.3		µA
	Mode 3		0.4		µA

*Note: Vcm is the common-mode voltage on CP0+ and CP0–.

68 Rev. 0.5