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Rev. 1.2
51
C8051F50x/F51x
Table 5.12. Comparator 0 and Comparator 1 Electrical Characteristics
VIO = 1.8 to 5.125 V, –40 to +125 °C unless otherwise noted.
Parameter
Conditions
Min
Typ
Max
Units
Response Time:
Mode 0, Vcm* = 1.5 V
CPn+ – CPn– = 100 mV
—
310
—
ns
CPn+ – CPn– = –100 mV
—
340
—
ns
Response Time:
Mode 1, Vcm* = 1.5 V
CPn+ – CPn– = 100 mV
—
410
—
ns
CPn+ – CPn– = –100 mV
—
510
—
ns
Response Time:
Mode 2, Vcm* = 1.5 V
CPn+ – CPn– = 100 mV
—
480
—
ns
CP0+ – CP0– = –100 mV
—
620
—
ns
Response Time:
Mode 3, Vcm* = 1.5 V
CPn+ – CPn– = 100 mV
—
1600
—
ns
CPn+ – CPn– = –100 mV
—
2600
—
ns
Common-Mode Rejection Ratio
—
1.7
8.9
mV/V
Positive Hysteresis 1
CPnHYP1–0 = 00
-2
0
2
mV
Positive Hysteresis 2
CPnHYP1–0 = 01
2
6
10
mV
Positive Hysteresis 3
CPnHYP1–0 = 10
5
11
20
mV
Positive Hysteresis 4
CPnHYP1–0 = 11
13
21
40
mV
Negative Hysteresis 1
CPnHYN1–0 = 00
-2
0
2
mV
Negative Hysteresis 2
CPnHYN1–0 = 01
2
6
10
mV
Negative Hysteresis 3
CPnHYN1–0 = 10
5
11
20
mV
Negative Hysteresis 4
CPnHYN1–0 = 11
13
21
40
mV
Inverting or Non-Inverting Input
Voltage Range
–0.25
—
VIO + 0.25
V
Input Capacitance
—
8
—
pF
Input Offset Voltage
–10
—
+10
mV
Power Supply
Power Supply Rejection
—
0.33
—
mV/V
Power-Up Time
—
3
—
s
Supply Current at DC
Mode 0
—
6.2
20
A
Mode 1
—
3.8
10
A
Mode 2
—
2.6
7.5
A
Mode 3
—
0.6
3
A
*Note: Vcm is the common-mode voltage on CP0+ and CP0–.