Rev. 1.4
31
C8051F52x/F53x
Table 2.7. Comparator Electrical Characteristics
VREGIN = 2.7–5.25 V, –40 to +125 °C unless otherwise noted.
All specifications apply to both Comparator0 and Comparator1 unless otherwise noted.
Parameter
Conditions
Min
Typ
Max
Units
Response Time:
Mode 0, Vcm1 = 1.5 V
CP0+ – CP0– = 100 mV
—
780
—
ns
CP0+ – CP0– = –100 mV
—
980
—
ns
Response Time:
Mode 1, Vcm1 = 1.5 V
CP0+ – CP0– = 100 mV
—
850
—
ns
CP0+ – CP0– = –100 mV
—
1120
—
ns
Response Time:
Mode 2, Vcm1 = 1.5 V
CP0+ – CP0– = 100 mV
—
870
—
ns
CP0+ – CP0– = –100 mV
—
1310
—
ns
Response Time:
Mode 3, Vcm1 = 1.5 V
CP0+ – CP0– = 100 mV
—
1980
—
ns
CP0+ – CP0– = –100 mV
—
4770
—
ns
Common-Mode Rejection
Ratio
—3
9
mV/V
Positive Hysteresis 1
CP0HYP1-0 = 00
—
0.7
2
mV
Positive Hysteresis 2
CP0HYP1-0 = 01
2
5
10
mV
Positive Hysteresis 3
CP0HYP1-0 = 10
5
10
20
mV
Positive Hysteresis 4
CP0HYP1-0 = 11
13
20
40
mV
Negative Hysteresis 1
CP0HYN1-0 = 00
—
0.7
2
mV
Negative Hysteresis 2
CP0HYN1-0 = 01
2
5
10
mV
Negative Hysteresis 3
CP0HYN1-0 = 10
5
10
20
mV
Negative Hysteresis 4
CP0HYN1-0 = 11
13
20
40
mV
Inverting or Non-Inverting
Input Voltage Range2
–0.25
—
VDD + 0.25
V
Input Capacitance2
—4
—
pF
Input Bias Current
—
0.5
—
nA
Input Offset Voltage
–15
—
15
mV
Input Impedance
—
1.5
—
k
Power Supply
Power Supply Rejection2
—0.2
4
mV/V
Power-up Time
—
2.3
—
s
Supply Current at DC
Mode 0
—
6
30
A
Mode 1
—
3
15
A
Mode 2
—
2
7.5
A
Mode 3
—
0.3
3.8
A
Notes:
1. Vcm is the common-mode voltage on CP0+ and CP0–.
2. Guaranteed by design and/or characterization.