Datasheet

DocID027973 Rev 5 85/119
STM32L011x3/4 Electrical characteristics
93
6.3.17 Comparators
Table 59. Comparator 1 characteristics
Symbol Parameter Conditions Min
(1)
Typ Max
(1)
1. Guaranteed by characterization, not tested in production.
Unit
V
DDA
Analog supply voltage - 1.65 3.6 V
R
400K
R
400K
value - - 400 -
kΩ
R
10K
R
10K
value - - 10 -
V
IN
Comparator 1 input
voltage range
-0.6-V
DDA
V
t
START
Comparator startup time - - 7 10
µs
td Propagation delay
(2)
2. The delay is characterized for 100 mV input step with 10 mV overdrive on the inverting input, the non-
inverting input set to the reference.
--310
V
offset
Comparator offset
(3)
3. In TSSOP14 package, where V
DDA
pin is shared with V
DD
pin, I/O toggling should be minimized to reach
the values given in the above table. I/O toggling with loaded I/O pins can generate ripple on V
DD
/V
DDA
and
degrade the comparator performance.
--±3 ±10 mV
d
Voffset
/dt
Comparator offset
variation in worst voltage
stress conditions
(3)
V
DDA
= 3.6 V
V
IN+
= 0 V
V
IN-
= V
REFINT
T
A
= 25 ° C
0 1.5 10 mV/1000 h
I
COMP1
Current consumption
(4)
4. Comparator consumption only. Internal reference voltage not included.
- - 160 260 nA
Table 60. Comparator 2 characteristics
Symbol Parameter Conditions Min Typ Max
(1)
Unit
V
DDA
Analog supply voltage - 1.65 - 3.6 V
V
IN
Comparator 2 input voltage range - 0 - V
DDA
V
t
START
Comparator startup time
Fast mode - 15 20
µs
Slow mode - 20 25
t
d slow
Propagation delay
(2)
in slow mode
1.65 V ≤ V
DDA
≤ 2.7 V - 1.8 3.5
2.7 V ≤ V
DDA
≤ 3.6 V - 2.5 6
t
d fast
Propagation delay
(2)
in fast mode
1.65 V ≤ V
DDA
≤ 2.7 V - 0.8 2
2.7 V ≤ V
DDA
≤ 3.6 V - 1.2 4
V
offset
Comparator offset error
(3)
- ±4 ±20 mV
dThreshold/
dt
Threshold voltage temperature
coefficient
V
DDA
= 3.3V
T
A
= 0 to 50 ° C
V- =V
REFINT
,
3/4 V
REFINT
,
1/2 V
REFINT
,
1/4 V
REFINT
.
-15 30
ppm
/°C
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