Datasheet
DocID028800 Rev 1 153/200
STM32L431xx Electrical characteristics
168
GBW
Gain Bandwidth
Product
Normal mode
V
DDA
2.4 V
(OPA_RANGE = 1)
550 1600 2200
kHz
Low-power mode 100 420 600
Normal mode
V
DDA
< 2.4 V
(OPA_RANGE = 0)
250 700 950
Low-power mode 40 180 280
SR
(3)
Slew rate
(from 10 and
90% of output
voltage)
Normal mode
V
DDA
2.4 V
-700-
V/ms
Low-power mode - 180 -
Normal mode
V
DDA
< 2.4 V
-300-
Low-power mode - 80 -
AO Open loop gain
Normal mode 55 110 -
dB
Low-power mode 45 110 -
V
OHSAT
(3)
High saturation
voltage
Normal mode
I
load
= max or R
load
=
min Input at V
DDA
.
V
DDA
-
100
--
mV
Low-power mode
V
DDA
-
50
--
V
OLSAT
(3)
Low saturation
voltage
Normal mode
I
load
= max or R
load
=
min Input at 0.
- - 100
Low-power mode - - 50
m
Phase margin
Normal mode - 74 -
°
Low-power mode - 66 -
GM Gain margin
Normal mode - 13 -
dB
Low-power mode - 20 -
t
WAKEUP
Wake up time
from OFF state.
Normal mode
C
LOAD
50 pf,
R
LOAD
4 k
follower
configuration
-510
µs
Low-power mode
C
LOAD
50 pf,
R
LOAD
20 k
follower
configuration
-1030
I
bias
OPAMP input
bias current
General purpose input - - -
(4)
nA
PGA gain
(3)
Non inverting
gain value
-
-2-
-
-4-
-8-
-16-
Table 74. OPAMP characteristics
(1)
(continued)
Symbol Parameter Conditions Min Typ Max Unit
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